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A 25-year-old man in Ontario, Canada has been arrested for allegedly stealing data from and extorting more than 160 companies that used the cloud data service Snowflake.
Image: https://www.pomerium.com/blog/the-real-lessons-from-the-snowflake-breach
On October 30, Canadian authorities arrested Alexander Moucka, a.k.a. Connor Riley Moucka of Kitchener, Ontario, on a provisional arrest warrant from the United States. Bloomberg first reported Moucka’s alleged ties to the Snowflake hacks on Monday.
At the end of 2023, malicious hackers learned that many large companies had uploaded huge volumes of sensitive customer data to Snowflake accounts that were protected with little more than a username and password (no multi-factor authentication required). After scouring darknet markets for stolen Snowflake account credentials, the hackers began raiding the data storage repositories used by some of the world’s largest corporations.
Among those was AT&T, which disclosed in July that cybercriminals had stolen personal information and phone and text message records for roughly 110 million people — nearly all of its customers. Wired.com reported in July that AT&T paid a hacker $370,000 to delete stolen phone records.
A report on the extortion attacks from the incident response firm Mandiant notes that Snowflake victim companies were privately approached by the hackers, who demanded a ransom in exchange for a promise not to sell or leak the stolen data. All told, more than 160 Snowflake customers were relieved of data, including TicketMaster, Lending Tree, Advance Auto Parts and Neiman Marcus.
Moucka is alleged to have used the hacker handles Judische and Waifu, among many others. These monikers correspond to a prolific cybercriminal whose exploits were the subject of a recent story published here about the overlap between Western, English-speaking cybercriminals and extremist groups that harass and extort minors into harming themselves or others.
On May 2, 2024, Judische claimed on the fraud-focused Telegram channel Star Chat that they had hacked Santander Bank, one of the first known Snowflake victims. Judische would repeat that claim in Star Chat on May 13 — the day before Santander publicly disclosed a data breach — and would periodically blurt out the names of other Snowflake victims before their data even went up for sale on the cybercrime forums.
404 Media reports that at a court hearing in Ontario this morning, Moucka called in from a prison phone and said he was seeking legal aid to hire an attorney.
Mandiant has attributed the Snowflake compromises to a group it calls “UNC5537,” with members based in North America and Turkey. Sources close to the investigation tell KrebsOnSecurity the UNC5537 member in Turkey is John Erin Binns, an elusive American man indicted by the U.S. Department of Justice (DOJ) for a 2021 breach at T-Mobile that exposed the personal information of at least 76.6 million customers.
Update: The Justice Department has unsealed an indictment (PDF) against Moucka and Binns, charging them with one count of conspiracy; 10 counts of wire fraud; four counts of computer fraud and abuse; two counts of extortion in relation to computer fraud; and two counts aggravated identity theft.
In a statement on Moucka’s arrest, Mandiant said UNC5537 aka Alexander ‘Connor’ Moucka has proven to be one of the most consequential threat actors of 2024.
“In April 2024, UNC5537 launched a campaign, systematically compromising misconfigured SaaS instances across over a hundred organizations,” wrote Austin Larsen, Mandiant’s senior threat analyst. “The operation, which left organizations reeling from significant data loss and extortion attempts, highlighted the alarming scale of harm an individual can cause using off-the-shelf tools.”
Sources involved in the investigation said UNC5537 has focused on hacking into telecommunications companies around the world. Those sources told KrebsOnSecurity that Binns and Judische are suspected of stealing data from India’s largest state-run telecommunications firm Bharat Sanchar Nigam Ltd (BNSL), and that the duo even bragged about being able to intercept or divert phone calls and text messages for a large portion of the population of India.
Judische appears to have outsourced the sale of databases from victim companies who refuse to pay, delegating some of that work to a cybercriminal who uses the nickname Kiberphant0m on multiple forums. In late May 2024, Kiberphant0m began advertising the sale of hundreds of gigabytes of data stolen from BSNL.
“Information is worth several million dollars but I’m selling for pretty cheap,” Kiberphant0m wrote of the BSNL data in a post on the English-language cybercrime community Breach Forums. “Negotiate a deal in Telegram.”
Also in May 2024, Kiberphant0m took to the Russian-language hacking forum XSS to sell more than 250 gigabytes of data stolen from an unnamed mobile telecom provider in Asia, including a database of all active customers and software allowing the sending of text messages to all customers.
On September 3, 2024, Kiberphant0m posted a sales thread on XSS titled “Selling American Telecom Access (100B+ Revenue).” Kiberphant0m’s asking price of $200,000 was apparently too high because they reposted the sales thread on Breach Forums a month later, with a headline that more clearly explained the data was stolen from Verizon‘s “push-to-talk” (PTT) customers — primarily U.S. government agencies and first responders.
404Media reported recently that the breach does not appear to impact the main consumer Verizon network. Rather, the hackers broke into a third party provider and stole data on Verizon’s PTT systems, which are a separate product marketed towards public sector agencies, enterprises, and small businesses to communicate internally.
Investigators say Moucka shared a home in Kitchener with other tenants, but not his family. His mother was born in Chechnya, and he speaks Russian in addition to French and English. Moucka’s father died of a drug overdose at age 26, when the defendant was roughly five years old.
A person claiming to be Judische began communicating with this author more than three months ago on Signal after KrebsOnSecurity started asking around about hacker nicknames previously used by Judische over the years.
Judische admitted to stealing and ransoming data from Snowflake customers, but he said he’s not interested in selling the information, and that others have done this with some of the data sets he stole.
“I’m not really someone that sells data unless it’s crypto [databases] or credit cards because they’re the only thing I can find buyers for that actually have money for the data,” Judische told KrebsOnSecurity. “The rest is just ransom.”
Judische has sent this reporter dozens of unsolicited and often profane messages from several different Signal accounts, all of which claimed to be an anonymous tipster sharing different identifying details for Judische. This appears to have been an elaborate effort by Judische to “detrace” his movements online and muddy the waters about his identity.
Judische frequently claimed he had unparalleled “opsec” or operational security, a term that refers to the ability to compartmentalize and obfuscate one’s tracks online. In an effort to show he was one step ahead of investigators, Judische shared information indicating someone had given him a Mandiant researcher’s assessment of who and where they thought he was. Mandiant says those were discussion points shared with select reporters in advance of the researcher’s recent talk at the LabsCon security conference.
But in a conversation with KrebsOnSecurity on October 26, Judische acknowledged it was likely that the authorities were closing in on him, and said he would seriously answer certain questions about his personal life.
“They’re coming after me for sure,” he said.
In several previous conversations, Judische referenced suffering from an unspecified personality disorder, and when pressed said he has a condition called “schizotypal personality disorder” (STPD).
According to the Cleveland Clinic, schizotypal personality disorder is marked by a consistent pattern of intense discomfort with relationships and social interactions: “People with STPD have unusual thoughts, speech and behaviors, which usually hinder their ability to form and maintain relationships.”
Judische said he was prescribed medication for his psychological issues, but that he doesn’t take his meds. Which might explain why he never leaves his home.
“I never go outside,” Judische allowed. “I’ve never had a friend or true relationship not online nor in person. I see people as vehicles to achieve my ends no matter how friendly I may seem on the surface, which you can see by how fast I discard people who are loyal or [that] I’ve known a long time.”
Judische later admitted he doesn’t have an official STPD diagnosis from a physician, but said he knows that he exhibits all the signs of someone with this condition.
“I can’t actually get diagnosed with that either,” Judische shared. “Most countries put you on lists and restrict you from certain things if you have it.”
Asked whether he has always lived at his current residence, Judische replied that he had to leave his hometown for his own safety.
“I can’t live safely where I’m from without getting robbed or arrested,” he said, without offering more details.
A source familiar with the investigation said Moucka previously lived in Quebec, which he allegedly fled after being charged with harassing others on the social network Discord.
Judische claims to have made at least $4 million in his Snowflake extortions. Judische said he and others frequently targeted business process outsourcing (BPO) companies, staffing firms that handle customer service for a wide range of organizations. They also went after managed service providers (MSPs) that oversee IT support and security for multiple companies, he claimed.
“Snowflake isn’t even the biggest BPO/MSP multi-company dataset on our networks, but what’s been exfiltrated from them is well over 100TB,” Judische bragged. “Only ones that don’t pay get disclosed (unless they disclose it themselves). A lot of them don’t even do their SEC filing and just pay us to fuck off.”
The other half of UNC5537 — 24-year-old John Erin Binns — was arrested in Turkey in late May 2024, and currently resides in a Turkish prison. However, it is unclear if Binns faces any immediate threat of extradition to the United States, where he is currently wanted on criminal hacking charges tied to the 2021 breach at T-Mobile.
A person familiar with the investigation said Binns’s application for Turkish citizenship was inexplicably approved after his incarceration, leading to speculation that Binns may have bought his way out of a sticky legal situation.
Under the Turkish constitution, a Turkish citizen cannot be extradited to a foreign state. Turkey has been criticized for its “golden passport” program, which provides citizenship and sanctuary for anyone willing to pay several hundred thousand dollars.
This is an image of a passport that Binns shared in one of many unsolicited emails to KrebsOnSecurity since 2021. Binns never explained why he sent this in Feb. 2023.
Binns’s alleged hacker alter egos — “IRDev” and “IntelSecrets” — were at once feared and revered on several cybercrime-focused Telegram communities, because he was known to possess a powerful weapon: A massive botnet. From reviewing the Telegram channels Binns frequented, we can see that others in those communities — including Judische — heavily relied on Binns and his botnet for a variety of cybercriminal purposes.
The IntelSecrets nickname corresponds to an individual who has claimed responsibility for modifying the source code for the Mirai “Internet of Things” botnet to create a variant known as “Satori,” and supplying it to others who used it for criminal gain and were later caught and prosecuted.
Since 2020, Binns has filed a flood of lawsuits naming various federal law enforcement officers and agencies — including the FBI, the CIA, and the U.S. Special Operations Command (PDF), demanding that the government turn over information collected about him and seeking restitution for his alleged kidnapping at the hands of the CIA.
Binns claims he was kidnapped in Turkey and subjected to various forms of psychological and physical torture. According to Binns, the U.S. Central Intelligence Agency (CIA) falsely told their counterparts in Turkey that he was a supporter or member of the Islamic State (ISIS), a claim he says led to his detention and torture by the Turkish authorities.
However, in a 2020 lawsuit he filed against the CIA, Binns himself acknowledged having visited a previously ISIS-controlled area of Syria prior to moving to Turkey in 2017.
A segment of a lawsuit Binns filed in 2020 against the CIA, in which he alleges U.S. put him on a terror watch list after he traveled to Syria in 2017.
Sources familiar with the investigation told KrebsOnSecurity that Binns was so paranoid about possible surveillance on him by American and Turkish intelligence agencies that his erratic behavior and online communications actually brought about the very government snooping that he feared.
In several online chats in late 2023 on Discord, IRDev lamented being lured into a law enforcement sting operation after trying to buy a rocket launcher online. A person close to the investigation confirmed that at the beginning of 2023, IRDev began making earnest inquiries about how to purchase a Stinger, an American-made portable weapon that operates as an infrared surface-to-air missile.
Sources told KrebsOnSecurity Binns’ repeated efforts to purchase the projectile earned him multiple visits from the Turkish authorities, who were justifiably curious why he kept seeking to acquire such a powerful weapon.
A careful study of Judische’s postings on Telegram and Discord since 2019 shows this user is more widely known under the nickname “Waifu,” a moniker that corresponds to one of the more accomplished “SIM swappers” in the English-language cybercrime community over the years.
SIM swapping involves phishing, tricking or bribing mobile phone company employees for credentials needed to redirect a target’s mobile phone number to a device the attackers control — allowing thieves to intercept incoming text messages and phone calls.
Several SIM-swapping channels on Telegram maintain a frequently updated leaderboard of the 100 richest SIM-swappers, as well as the hacker handles associated with specific cybercrime groups (Waifu is ranked #24). That list has long included Waifu on a roster of hackers for a group that called itself “Beige.”
The term “Beige Group” came up in reporting on two stories published here in 2020. The first was in an August 2020 piece called Voice Phishers Targeting Corporate VPNs, which warned that the COVID-19 epidemic had brought a wave of targeted voice phishing attacks that tried to trick work-at-home employees into providing access to their employers’ networks. Frequent targets of the Beige group included employees at numerous top U.S. banks, ISPs, and mobile phone providers.
The second time Beige Group was mentioned by sources was in reporting on a breach at the domain registrar GoDaddy. In November 2020, intruders thought to be associated with the Beige Group tricked a GoDaddy employee into installing malicious software, and with that access they were able to redirect the web and email traffic for multiple cryptocurrency trading platforms. Other frequent targets of the Beige group included employees at numerous top U.S. banks, ISPs, and mobile phone providers.
Judische’s various Telegram identities have long claimed involvement in the 2020 GoDaddy breach, and he didn’t deny his alleged role when asked directly. Judische said he prefers voice phishing or “vishing” attacks that result in the target installing data-stealing malware, as opposed to tricking the user into entering their username, password and one-time code.
“Most of my ops involve malware [because] credential access burns too fast,” Judische explained.
The Telegram channels that the Judische/Waifu accounts frequented over the years show this user divided their time between posting in channels dedicated to financial cybercrime, and harassing and stalking others in harm communities like Leak Society and Court.
Both of these Telegram communities are known for victimizing children through coordinated online campaigns of extortion, doxing, swatting and harassment. People affiliated with harm groups like Court and Leak Society will often recruit new members by lurking on gaming platforms, social media sites and mobile applications that are popular with young people, including Discord, Minecraft, Roblox, Steam, Telegram, and Twitch.
“This type of offence usually starts with a direct message through gaming platforms and can move to more private chatrooms on other virtual platforms, typically one with video enabled features, where the conversation quickly becomes sexualized or violent,” warns a recent alert from the Royal Canadian Mounted Police (RCMP) about the rise of sextortion groups on social media channels.
“One of the tactics being used by these actors is sextortion, however, they are not using it to extract money or for sexual gratification,” the RCMP continued. “Instead they use it to further manipulate and control victims to produce more harmful and violent content as part of their ideological objectives and radicalization pathway.”
Some of the largest such known groups include those that go by the names 764, CVLT, Kaskar, 7997, 8884, 2992, 6996, 555, Slit Town, 545, 404, NMK, 303, and H3ll.
On the various cybercrime-oriented channels Judische frequented, he often lied about his or others’ involvement in various breaches. But Judische also at times shared nuggets of truth about his past, particularly when discussing the early history and membership of specific Telegram- and Discord-based cybercrime and harm groups.
Judische claimed in multiple chats, including on Leak Society and Court, that they were an early member of the Atomwaffen Division (AWD), a white supremacy group whose members are suspected of having committed multiple murders in the U.S. since 2017.
In 2019, KrebsOnSecurity exposed how a loose-knit group of neo-Nazis, some of whom were affiliated with AWD, had doxed and/or swatted nearly three dozen journalists at a range of media publications. Swatting involves communicating a false police report of a bomb threat or hostage situation and tricking authorities into sending a heavily armed police response to a targeted address.
Judsiche also told a fellow denizen of Court that years ago he was active in an older harm community called “RapeLash,” a truly vile Discord server known for attracting Atomwaffen members. A 2018 retrospective on RapeLash posted to the now defunct neo-Nazi forum Fascist Forge explains that RapeLash was awash in gory, violent images and child pornography.
A Fascist Forge member named “Huddy” recalled that RapeLash was the third incarnation of an extremist community also known as “FashWave,” short for Fascist Wave.
“I have no real knowledge of what happened with the intermediary phase known as ‘FashWave 2.0,’ but FashWave 3.0 houses multiple known Satanists and other degenerates connected with AWD, one of which got arrested on possession of child pornography charges, last I heard,” Huddy shared.
In June 2024, a Mandiant employee told Bloomberg that UNC5537 members have made death threats against cybersecurity experts investigating the hackers, and that in one case the group used artificial intelligence to create fake nude photos of a researcher to harass them.
Allison Nixon is chief research officer with the New York-based cybersecurity firm Unit 221B. Nixon is among several researchers who have faced harassment and specific threats of physical violence from Judische.
Nixon said Judische is likely to argue in court that his self-described psychological disorder(s) should somehow excuse his long career in cybercrime and in harming others.
“They ran a misinformation campaign in a sloppy attempt to cover up the hacking campaign,” Nixon said of Judische. “Coverups are an acknowledgment of guilt, which will undermine a mental illness defense in court. We expect that violent hackers from the [cybercrime community] will experience increasingly harsh sentences as the crackdown continues.”
5:34 p.m. ET: Updated story to include a clarification from Mandiant. Corrected Moucka’s age.
Nov. 21, 2024: Included link to a criminal indictment against Moucka and Binns.
A cyberattack that shut down two of the top casinos in Las Vegas last year quickly became one of the most riveting security stories of 2023. It was the first known case of native English-speaking hackers in the United States and Britain teaming up with ransomware gangs based in Russia. But that made-for-Hollywood narrative has eclipsed a far more hideous trend: Many of these young, Western cybercriminals are also members of fast-growing online groups that exist solely to bully, stalk, harass and extort vulnerable teens into physically harming themselves and others.
Image: Shutterstock.
In September 2023, a Russian ransomware group known as ALPHV/Black Cat claimed credit for an intrusion at the MGM Resorts hotel chain that quickly brought MGM’s casinos in Las Vegas to a standstill. While MGM was still trying to evict the intruders from its systems, an individual who claimed to have firsthand knowledge of the hack contacted multiple media outlets to offer interviews about how it all went down.
One account of the hack came from a 17-year-old in the United Kingdom, who told reporters the intrusion began when one of the English-speaking hackers phoned a tech support person at MGM and tricked them into resetting the password for an employee account.
The security firm CrowdStrike dubbed the group “Scattered Spider,” a recognition that the MGM hackers came from different cliques scattered across an ocean of Telegram and Discord servers dedicated to financially-oriented cybercrime.
Collectively, this archipelago of crime-focused chat communities is known as “The Com,” and it functions as a kind of distributed cybercriminal social network that facilitates instant collaboration.
But mostly, The Com is a place where cybercriminals go to boast about their exploits and standing within the community, or to knock others down a peg or two. Top Com members are constantly sniping over who pulled off the most impressive heists, or who has accumulated the biggest pile of stolen virtual currencies.
And as often as they extort victim companies for financial gain, members of The Com are trying to wrest stolen money from their cybercriminal rivals — often in ways that spill over into physical violence in the real world.
CrowdStrike would go on to produce and sell Scattered Spider action figures, and it featured a life-sized Scattered Spider sculpture at this year’s RSA Security Conference in San Francisco.
But marketing security products and services based on specific cybercriminal groups can be tricky, particularly if it turns out that robbing and extorting victims is by no means the most abhorrent activity those groups engage in on a daily basis.
KrebsOnSecurity examined the Telegram user ID number of the account that offered media interviews about the MGM hack — which corresponds to the screen name “@Holy” — and found the same account was used across a number of cybercrime channels that are entirely focused on extorting young people into harming themselves or others, and recording the harm on video.
Holy was known to possess multiple prized Telegram usernames, including @bomb, @halo, and @cute, as well as one of the highest-priced Telegram usernames ever put up for sale: @nazi.
In one post on a Telegram channel dedicated to youth extortion, this same user can be seen asking if anyone knows the current Telegram handles for several core members of 764, an extremist group known for victimizing children through coordinated online campaigns of extortion, doxing, swatting and harassment.
People affiliated with harm groups like 764 will often recruit new members by lurking on gaming platforms, social media sites and mobile applications that are popular with young people, including Discord, Minecraft, Roblox, Steam, Telegram, and Twitch.
“This type of offence usually starts with a direct message through gaming platforms and can move to more private chatrooms on other virtual platforms, typically one with video enabled features, where the conversation quickly becomes sexualized or violent,” warns a recent alert from the Royal Canadian Mounted Police (RCMP) about the rise of sextortion groups on social media channels.
“One of the tactics being used by these actors is sextortion, however, they are not using it to extract money or for sexual gratification,” the RCMP continued. “Instead they use it to further manipulate and control victims to produce more harmful and violent content as part of their ideological objectives and radicalization pathway.”
The 764 network is among the most populated harm communities, but there are plenty more. Some of the largest such known groups include CVLT, Court, Kaskar, Leak Society, 7997, 8884, 2992, 6996, 555, Slit Town, 545, 404, NMK, 303, and H3ll.
In March, a consortium of reporters from Wired, Der Spiegel, Recorder and The Washington Post examined millions of messages across more than 50 Discord and Telegram chat groups.
“The abuse perpetrated by members of com groups is extreme,” Wired’s Ali Winston wrote. “They have coerced children into sexual abuse or self-harm, causing them to deeply lacerate their bodies to carve ‘cutsigns’ of an abuser’s online alias into their skin.” The story continues:
“Victims have flushed their heads in toilets, attacked their siblings, killed their pets, and in some extreme instances, attempted or died by suicide. Court records from the United States and European nations reveal participants in this network have also been accused of robberies, in-person sexual abuse of minors, kidnapping, weapons violations, swatting, and murder.”
“Some members of the network extort children for sexual pleasure, some for power and control. Some do it merely for the kick that comes from manipulation. Others sell the explicit CSAM content produced by extortion on the dark web.”
KrebsOnSecurity has learned Holy is the 17-year-old who was arrested in July 2024 by the U.K.’s West Midlands Police as part of a joint investigation with the FBI into the MGM hack.
Early in their cybercriminal career (as a 15-year-old), @Holy went by the handle “Vsphere,” and was a proud member of the LAPSUS$ cybercrime group. Throughout 2022, LAPSUS$ would hack and social engineer their way into some of the world’s biggest technology companies, including EA Games, Microsoft, NVIDIA, Okta, Samsung, and T-Mobile.
Another timely example of the overlap between harm communities and top members of The Com can be found in a group of criminals who recently stole obscene amounts of customer records from users of the cloud data provider Snowflake.
At the end of 2023, malicious hackers figured out that many major companies have uploaded massive amounts of valuable and sensitive customer data to Snowflake servers, all the while protecting those Snowflake accounts with little more than a username and password (no multi-factor authentication required). The group then searched darknet markets for stolen Snowflake account credentials, and began raiding the data storage repositories used by some of the world’s largest corporations.
Among those that had data exposed in Snowflake was AT&T, which disclosed in July that cybercriminals had stolen personal information and phone and text message records for roughly 110 million people — nearly all its customers.
A report on the extortion group from the incident response firm Mandiant notes that Snowflake victim companies were privately approached by the hackers, who demanded a ransom in exchange for a promise not to sell or leak the stolen data. All told, more than 160 organizations were extorted, including TicketMaster, Lending Tree, Advance Auto Parts and Neiman Marcus.
On May 2, 2024, a user by the name “Judische” claimed on the fraud-focused Telegram channel Star Chat that they had hacked Santander Bank, one of the first known Snowflake victims. Judische would repeat that claim in Star Chat on May 13 — the day before Santander publicly disclosed a data breach — and would periodically blurt out the names of other Snowflake victims before their data even went up for sale on the cybercrime forums.
A careful review of Judische’s account history and postings on Telegram shows this user is more widely known under the nickname “Waifu,” an early moniker that corresponds to one of the more accomplished SIM-swappers in The Com over the years.
In a SIM-swapping attack, the fraudsters will phish or purchase credentials for mobile phone company employees, and use those credentials to redirect a target’s mobile calls and text messages to a device the attackers control.
Several channels on Telegram maintain a frequently updated leaderboard of the 100 richest SIM-swappers, as well as the hacker handles associated with specific cybercrime groups (Waifu is ranked #24). That leaderboard has long included Waifu on a roster of hackers for a group that called itself “Beige.”
Beige members were implicated in two stories published here in 2020. The first was an August 2020 piece called Voice Phishers Targeting Corporate VPNs, which warned that the COVID-19 epidemic had brought a wave of voice phishing or “vishing” attacks that targeted work-from-home employees via their mobile devices, and tricked many of those people into giving up credentials needed to access their employer’s network remotely.
Beige group members also have claimed credit for a breach at the domain registrar GoDaddy. In November 2020, intruders thought to be associated with the Beige Group tricked a GoDaddy employee into installing malicious software, and with that access they were able to redirect the web and email traffic for multiple cryptocurrency trading platforms.
The Telegram channels that Judische and his related accounts frequented over the years show this user divides their time between posting in SIM-swapping and cybercrime cashout channels, and harassing and stalking others in harm communities like Leak Society and Court.
Mandiant has attributed the Snowflake compromises to a group it calls “UNC5537,” with members based in North America and Turkey. KrebsOnSecurity has learned Judische is a 26-year-old software engineer in Ontario, Canada.
Sources close to the investigation into the Snowflake incident tell KrebsOnSecurity the UNC5537 member in Turkey is John Erin Binns, an elusive American man indicted by the U.S. Department of Justice (DOJ) for a 2021 breach at T-Mobile that exposed the personal information of at least 76.6 million customers.
Binns is currently in custody in a Turkish prison and fighting his extradition. Meanwhile, he has been suing almost every federal agency and agent that contributed investigative resources to his case.
In June 2024, a Mandiant employee told Bloomberg that UNC5537 members have made death threats against cybersecurity experts investigating the hackers, and that in one case the group used artificial intelligence to create fake nude photos of a researcher to harass them.
In June 2024, two American men pleaded guilty to hacking into a U.S. Drug Enforcement Agency (DEA) online portal that tapped into 16 different federal law enforcement databases. Sagar “Weep” Singh, a 20-year-old from Rhode Island, and Nicholas “Convict” Ceraolo, 25, of Queens, NY, were both active in SIM-swapping communities.
Singh and Ceraolo hacked into a number of foreign police department email accounts, and used them to make phony “emergency data requests” to social media platforms seeking account information about specific users they were stalking. According to the government, in each case the men impersonating the foreign police departments told those platforms the request was urgent because the account holders had been trading in child pornography or engaging in child extortion.
Eventually, the two men formed part of a group of cybercriminals known to its members as “ViLE,” who specialize in obtaining personal information about third-party victims, which they then used to harass, threaten or extort the victims, a practice known as “doxing.”
The U.S. government says Singh and Ceraolo worked closely with a third man — referenced in the indictment as co-conspirator #1 or “CC-1” — to administer a doxing forum where victims could pay to have their personal information removed.
The government doesn’t name CC-1 or the doxing forum, but CC-1’s hacker handle is “Kayte” (a.k.a. “KT“) which corresponds to the nickname of a 23-year-old man who lives with his parents in Coffs Harbor, Australia. For several years (with a brief interruption), KT has been the administrator of a truly vile doxing community known as the Doxbin.
A screenshot of the website for the cybercriminal group “ViLE.” Image: USDOJ.
People whose names and personal information appear on the Doxbin can quickly find themselves the target of extended harassment campaigns, account hacking, SIM-swapping and even swatting — which involves falsely reporting a violent incident at a target’s address to trick local police into responding with potentially deadly force.
A handful of Com members targeted by federal authorities have gone so far as to perpetrate swatting, doxing, and other harassment against the same federal agents who are trying to unravel their alleged crimes. This has led some investigators working cases involving the Com to begin redacting their names from affidavits and indictments filed in federal court.
In January 2024, KrebsOnSecurity broke the news that prosecutors in Florida had charged a 19-year-old alleged Scattered Spider member named Noah Michael Urban with wire fraud and identity theft. That story recounted how Urban’s alleged hacker identities “King Bob” and “Sosa” inhabited a world in which rival cryptocurrency theft rings frequently settled disputes through so-called “violence-as-a-service” offerings — hiring strangers online to perpetrate firebombings, beatings and kidnappings against their rivals.
Urban’s indictment shows the name of the federal agent who testified to it has been blacked out:
The final page of Noah Michael Urban’s indictment shows the investigating agent redacted their name from charging documents.
In June 2022, this blog told the story of two men charged with hacking into the Ring home security cameras of a dozen random people and then methodically swatting each of them. Adding insult to injury, the men used the compromised security cameras to record live footage of local police swarming those homes.
McCarty, in a mugshot.
James Thomas Andrew McCarty, Charlotte, N.C., and Kya “Chumlul” Nelson, of Racine, Wisc., conspired to hack into Yahoo email accounts belonging to victims in the United States. The two would check how many of those Yahoo accounts were associated with Ring accounts, and then target people who used the same password for both accounts.
The Telegram and Discord aliases allegedly used by McCarty — “Aspertaine” and “Couch,” among others — correspond to an identity that was active in certain channels dedicated to SIM-swapping.
What KrebsOnSecurity didn’t report at the time is that both ChumLul and Aspertaine were active members of CVLT, wherein those identities clearly participated in harassing and exploiting young teens online.
In June 2024, McCarty was sentenced to seven years in prison after pleading guilty to making hoax calls that elicited police SWAT responses. Nelson also pleaded guilty and received a seven-year prison sentence.
In March 2023, U.S. federal agents in New York announced they’d arrested “Pompompurin,” the alleged administrator of Breachforums, an English-language cybercrime forum where hacked corporate databases frequently appear for sale. In cases where the victim organization isn’t extorted in advance by hackers, being listed on Breachforums has often been the way many victims first learned of an intrusion.
Pompompurin had been a nemesis to the FBI for several years. In November 2021, KrebsOnSecurity broke the news that thousands of fake emails about a cybercrime investigation were blasted out from the FBI’s email systems and Internet addresses.
Pompompurin took credit for that stunt, and said he was able to send the FBI email blast by exploiting a flaw in an FBI portal designed to share information with state and local law enforcement authorities. The FBI later acknowledged that a software misconfiguration allowed someone to send the fake emails.
In December, 2022, KrebsOnSecurity detailed how hackers active on BreachForums had infiltrated the FBI’s InfraGard program, a vetted network designed to build cyber and physical threat information sharing partnerships with experts in the private sector. The hackers impersonated the CEO of a major financial company, applied for InfraGard membership in the CEO’s name, and were granted admission to the community.
The feds named Pompompurin as 21-year-old Peekskill resident Conor Brian Fitzpatrick, who was originally charged with one count of conspiracy to solicit individuals to sell unauthorized access devices (stolen usernames and passwords). But after FBI agents raided and searched the home where Fitzpatrick lived with his parents, prosecutors tacked on charges for possession of child pornography.
Recent actions by the DOJ indicate the government is well aware of the significant overlap between leading members of The Com and harm communities. But the government also is growing more sensitive to the criticism that it can often take months or years to gather enough evidence to criminally charge some of these suspects, during which time the perpetrators can abuse and recruit countless new victims.
Late last year, however, the DOJ signaled a new tactic in pursuing leaders of harm communities like 764: Charging them with domestic terrorism.
In December 2023, the government charged (PDF) a Hawaiian man with possessing and sharing sexually explicit videos and images of prepubescent children being abused. Prosecutors allege Kalana Limkin, 18, of Hilo, Hawaii, admitted he was an associate of CVLT and 764, and that he was the founder of a splinter harm group called Cultist. Limkin’s Telegram profile shows he also was active on the harm community Slit Town.
The relevant citation from Limkin’s complaint reads:
“Members of the group ‘764’ have conspired and continue to conspire in both online and in-person venues to engage in violent actions in furtherance of a Racially Motivated Violent Extremist ideology, wholly or in part through activities that violate federal criminal law meeting the statutory definition of Domestic Terrorism, defined in Title 18, United States Code, § 2331.”
Experts say charging harm groups under anti-terrorism statutes potentially gives the government access to more expedient investigative powers than it would normally have in a run-of-the-mill criminal hacking case.
“What it ultimately gets you is additional tools you can use in the investigation, possibly warrants and things like that,” said Mark Rasch, a former U.S. federal cybercrime prosecutor and now general counsel for the New York-based cybersecurity firm Unit 221B. “It can also get you additional remedies at the end of the case, like greater sanctions, more jail time, fines and forfeiture.”
But Rasch said this tactic can backfire on prosecutors who overplay their hand and go after someone who ends up challenging the charges in court.
“If you’re going to charge a hacker or pedophile with a crime like terrorism, that’s going to make it harder to get a conviction,” Rasch said. “It adds to the prosecutorial burden and increases the likelihood of getting an acquittal.”
Rasch said it’s unclear where it is appropriate to draw the line in the use of terrorism statutes to disrupt harm groups online, noting that there certainly are circumstances where individuals can commit violations of domestic anti-terrorism statutes through their Internet activity alone.
“The Internet is a platform like any other, where virtually any kind of crime that can be committed in the real world can also be committed online,” he said. “That doesn’t mean all misuse of computers fits within the statutory definition of terrorism.”
The RCMP’s advisory on sexual extortion of minors over the Internet lists a number of potential warning signs that teens may exhibit if they become entangled in these harm groups. The FBI urges anyone who believes their child or someone they know is being exploited to contact their local FBI field office, call 1-800-CALL-FBI, or report it online at tips.fbi.gov.
The U.S. government agency in charge of improving the nation’s cybersecurity posture is ordering all federal agencies to take new measures to restrict access to Internet-exposed networking equipment. The directive comes amid a surge in attacks targeting previously unknown vulnerabilities in widely used security and networking appliances.
Under a new order from the Cybersecurity and Infrastructure Security Agency (CISA), federal agencies will have 14 days to respond to any reports from CISA about misconfigured or Internet-exposed networking equipment. The directive applies to any networking devices — such as firewalls, routers and load balancers — that allow remote authentication or administration.
The order requires federal departments to limit access so that only authorized users on an agency’s local or internal network can reach the management interfaces of these devices. CISA’s mandate follows a slew of recent incidents wherein attackers exploited zero-day flaws in popular networking products to conduct ransomware and cyber espionage attacks on victim organizations.
Earlier today, incident response firm Mandiant revealed that since at least October 2022, Chinese cyber spies have been exploiting a zero-day vulnerability in many email security gateway (ESG) appliances sold by California-based Barracuda Networks to hoover up email from organizations using these devices.
Barracuda was alerted to the exploitation of a zero-day in its products in mid-May, and two days later the company pushed a security update to address the flaw in all affected devices. But last week, Barracuda took the highly unusual step of offering to replace compromised ESGs, evidently in response to malware that altered the systems in such a fundamental way that they could no longer be secured remotely with software updates.
According to Mandiant, a previously unidentified Chinese hacking group was responsible for exploiting the Barracuda flaw, and appeared to be searching through victim organization email records for accounts “belonging to individuals working for a government with political or strategic interest to [China] while this victim government was participating in high-level, diplomatic meetings with other countries.”
When security experts began raising the alarm about a possible zero-day in Barracuda’s products, the Chinese hacking group altered their tactics, techniques and procedures (TTPs) in response to Barracuda’s efforts to contain and remediate the incident, Mandiant found.
Mandiant said the attackers will continue to change their tactics and malware, “especially as network defenders continue to take action against this adversary and their activity is further exposed by the infosec community.”
Meanwhile, this week we learned more details about the ongoing exploitation of a zero-day flaw in a broad range of virtual private networking (VPN) products made by Fortinet — devices many organizations rely on to facilitate remote network access for employees.
On June 11, Fortinet released a half-dozen security updates for its FortiOS firmware, including a weakness that researchers said allows an attacker to run malware on virtually any Fortinet SSL VPN appliance. The researchers found that just being able to reach the management interface for a vulnerable Fortinet SSL VPN appliance was enough to completely compromise the devices.
“This is reachable pre-authentication, on every SSL VPN appliance,” French vulnerability researcher Charles Fol tweeted. “Patch your #Fortigate.”
In details published on June 12, Fortinet confirmed that one of the vulnerabilities (CVE-2023-27997) is being actively exploited. The company said it discovered the weakness in an internal code audit that began in January 2023 — when it learned that Chinese hackers were exploiting a different zero-day flaw in its products.
Shodan.io, the search engine made for finding Internet of Things devices, reports that there are currently more than a half-million vulnerable Fortinet devices reachable via the public Internet.
The new cybersecurity directive from CISA orders agencies to remove any networking device management interfaces from the internet by making them only accessible from an internal enterprise network (CISA recommends an isolated management network). CISA also says agencies should “deploy capabilities, as part of a Zero Trust Architecture, that enforce access control to the interface through a policy enforcement point separate from the interface itself (preferred action).”
Security experts say CISA’s directive highlights the reality that cyberspies and ransomware gangs are making it increasingly risky for organizations to expose any devices to the public Internet, because these groups have strong incentives to probe such devices for previously unknown security vulnerabilities.
The most glaring example of this dynamic can be seen in the frequency with which ransomware groups have discovered and pounced on zero-day flaws in widely-used file transfer applications. One ransomware gang in particular — Cl0p — has repeatedly exploited zero day bugs in various file transfer appliances to extort tens of millions of dollars from hundreds of ransomware victims.
On February 2, KrebsOnSecurity broke the news that attackers were exploiting a zero-day vulnerability in the GoAnywhere file transfer appliance by Fortra. By the time security updates were available to fix the vulnerability, Cl0p had already used it to steal data from more than a hundred organizations running Fortra’s appliance.
According to CISA, on May 27, Cl0p began exploiting a previously unknown flaw in MOVEit Transfer, a popular Internet-facing file transfer application. MOVEit parent Progress Software has since released security updates to address the weakness, but Cl0p claims to have already used it to compromise hundreds of victim organizations. TechCrunch has been tracking the fallout from victim organizations, which range from banks and insurance providers to universities and healthcare entities.
The always on-point weekly security news podcast Risky Business has recently been urging organizations to jettison any and all FTP appliances, noting that Cl0p (or another crime gang) is likely to visit the same treatment on other FTP appliance vendors.
But that sound advice doesn’t exactly scale for mid-tier networking devices like Barracuda ESGs or Fortinet SSL VPNs, which are particularly prominent in small to mid-sized organizations.
“It’s not like FTP services, you can’t tell an enterprise [to] turn off the VPN [because] the productivity hit of disconnecting the VPN is terminal, it’s a non-starter,” Risky Business co-host Adam Boileau said on this week’s show. “So how to mitigate the impact of having to use a domain-joined network appliance at the edge of your network that is going to get zero-day in it? There’s no good answer.”
Risky Business founder Patrick Gray said the COVID-19 pandemic breathed new life into entire classes of networking appliances that rely on code which was never designed with today’s threat models in mind.
“In the years leading up to the pandemic, the push towards identity-aware proxies and zero trust everything and moving away from this type of equipment was gradual, but it was happening,” Gray said. “And then COVID-19 hit and everybody had to go work from home, and there really was one option to get going quickly — which was to deploy VPN concentrators with enterprise features.”
Gray said the security industry had been focused on building the next generation of remote access tools that are more security-hardened, but when the pandemic hit organizations scrambled to cobble together whatever they could.
“The only stuff available in the market was all this old crap that is not QA’d properly, and every time you shake them CVEs fall out,” Gray remarked, calling the pandemic, “a shot in the arm” to companies like Fortinet and Barracuda.
“They sold so many VPNs through the pandemic and this is the hangover,” Gray said. “COVID-19 extended the life of these companies and technologies, and that’s unfortunate.”
It’s not often that a zero-day vulnerability causes a network security vendor to urge customers to physically remove and decommission an entire line of affected hardware — as opposed to just applying software updates. But experts say that is exactly what transpired this week with Barracuda Networks, as the company struggled to combat a sprawling malware threat which appears to have undermined its email security appliances in such a fundamental way that they can no longer be safely updated with software fixes.
The Barracuda Email Security Gateway (ESG) 900 appliance.
Campbell, Calif. based Barracuda said it hired incident response firm Mandiant on May 18 after receiving reports about unusual traffic originating from its Email Security Gateway (ESG) devices, which are designed to sit at the edge of an organization’s network and scan all incoming and outgoing email for malware.
On May 19, Barracuda identified that the malicious traffic was taking advantage of a previously unknown vulnerability in its ESG appliances, and on May 20 the company pushed a patch for the flaw to all affected appliances (CVE-2023-2868).
In its security advisory, Barracuda said the vulnerability existed in the Barracuda software component responsible for screening attachments for malware. More alarmingly, the company said it appears attackers first started exploiting the flaw in October 2022.
But on June 6, Barracuda suddenly began urging its ESG customers to wholesale rip out and replace — not patch — affected appliances.
“Impacted ESG appliances must be immediately replaced regardless of patch version level,” the company’s advisory warned. “Barracuda’s recommendation at this time is full replacement of the impacted ESG.”
In a statement, Barracuda said it will be providing the replacement product to impacted customers at no cost, and that not all ESG appliances were compromised.
“No other Barracuda product, including our SaaS email solutions, were impacted by this vulnerability,” the company said. “If an ESG appliance is displaying a notification in the User Interface, the ESG appliance had indicators of compromise. If no notification is displayed, we have no reason to believe that the appliance has been compromised at this time.”
Nevertheless, the statement says that “out of an abundance of caution and in furtherance of our containment strategy, we recommend impacted customers replace their compromised appliance.”
“As of June 8, 2023, approximately 5% of active ESG appliances worldwide have shown any evidence of known indicators of compromise due to the vulnerability,” the statement continues. “Despite deployment of additional patches based on known IOCs, we continue to see evidence of ongoing malware activity on a subset of the compromised appliances. Therefore, we would like customers to replace any compromised appliance with a new unaffected device.”
Rapid7‘s Caitlin Condon called this remarkable turn of events “fairly stunning,” and said there appear to be roughly 11,000 vulnerable ESG devices still connected to the Internet worldwide.
“The pivot from patch to total replacement of affected devices is fairly stunning and implies the malware the threat actors deployed somehow achieves persistence at a low enough level that even wiping the device wouldn’t eradicate attacker access,” Condon wrote.
Barracuda said the malware was identified on a subset of appliances that allowed the attackers persistent backdoor access to the devices, and that evidence of data exfiltration was identified on some systems.
Rapid7 said it has seen no evidence that attackers are using the flaw to move laterally within victim networks. But that may be small consolation for Barracuda customers now coming to terms with the notion that foreign cyberspies probably have been hoovering up all their email for months.
Nicholas Weaver, a researcher at University of California, Berkeley’s International Computer Science Institute (ICSI), said it is likely that the malware was able to corrupt the underlying firmware that powers the ESG devices in some irreparable way.
“One of the goals of malware is to be hard to remove, and this suggests the malware compromised the firmware itself to make it really hard to remove and really stealthy,” Weaver said. “That’s not a ransomware actor, that’s a state actor. Why? Because a ransomware actor doesn’t care about that level of access. They don’t need it. If they’re going for data extortion, it’s more like a smash-and-grab. If they’re going for data ransoming, they’re encrypting the data itself — not the machines.”
In addition to replacing devices, Barracuda says ESG customers should also rotate any credentials connected to the appliance(s), and check for signs of compromise dating back to at least October 2022 using the network and endpoint indicators the company has released publicly.
Update, June 9, 11:55 a.m. ET: Barracuda has issued an updated statement about the incident, portions of which are now excerpted above.
We learned some remarkable new details this week about the recent supply-chain attack on VoIP software provider 3CX. The lengthy, complex intrusion has all the makings of a cyberpunk spy novel: North Korean hackers using legions of fake executive accounts on LinkedIn to lure people into opening malware disguised as a job offer; malware targeting Mac and Linux users working at defense and cryptocurrency firms; and software supply-chain attacks nested within earlier supply chain attacks.
Researchers at ESET say this job offer from a phony HSBC recruiter on LinkedIn was North Korean malware masquerading as a PDF file.
In late March 2023, 3CX disclosed that its desktop applications for both Windows and macOS were compromised with malicious code that gave attackers the ability to download and run code on all machines where the app was installed. 3CX says it has more than 600,000 customers and 12 million users in a broad range of industries, including aerospace, healthcare and hospitality.
3CX hired incident response firm Mandiant, which released a report on Wednesday that said the compromise began in 2022 when a 3CX employee installed a malware-laced software package distributed via an earlier software supply chain compromise that began with a tampered installer for X_TRADER, a software package provided by Trading Technologies.
“This is the first time Mandiant has seen a software supply chain attack lead to another software supply chain attack,” reads the April 20 Mandiant report.
Mandiant found the earliest evidence of compromise uncovered within 3CX’s network was through the VPN using the employee’s corporate credentials, two days after the employee’s personal computer was compromised.
“Eventually, the threat actor was able to compromise both the Windows and macOS build environments,” 3CX said in an April 20 update on their blog.
Mandiant concluded that the 3CX attack was orchestrated by the North Korean state-sponsored hacking group known as Lazarus, a determination that was independently reached earlier by researchers at Kaspersky Lab and Elastic Security.
Mandiant found the compromised 3CX software would download malware that sought out new instructions by consulting encrypted icon files hosted on GitHub. The decrypted icon files revealed the location of the malware’s control server, which was then queried for a third stage of the malware compromise — a password stealing program dubbed ICONICSTEALER.
The double supply chain compromise that led to malware being pushed out to some 3CX customers. Image: Mandiant.
Meanwhile, the security firm ESET today published research showing remarkable similarities between the malware used in the 3CX supply chain attack and Linux-based malware that was recently deployed via fake job offers from phony executive profiles on LinkedIn. The researchers said this was the first time Lazarus had been spotted deploying malware aimed at Linux users.
As reported in a series last summer here, LinkedIn has been inundated this past year by fake executive profiles for people supposedly employed at a range of technology, defense, energy and financial companies. In many cases, the phony profiles spoofed chief information security officers at major corporations, and some attracted quite a few connections before their accounts were terminated.
Mandiant, Proofpoint and other experts say Lazarus has long used these bogus LinkedIn profiles to lure targets into opening a malware-laced document that is often disguised as a job offer. This ongoing North Korean espionage campaign using LinkedIn was first documented in August 2020 by ClearSky Security, which said the Lazarus group operates dozens of researchers and intelligence personnel to maintain the campaign globally.
Microsoft Corp., which owns LinkedIn, said in September 2022 that it had detected a wide range of social engineering campaigns using a proliferation of phony LinkedIn accounts. Microsoft said the accounts were used to impersonate recruiters at technology, defense and media companies, and to entice people into opening a malicious file. Microsoft found the attackers often disguised their malware as legitimate open-source software like Sumatra PDF and the SSH client Putty.
Microsoft attributed those attacks to North Korea’s Lazarus hacking group, although they’ve traditionally referred to this group as “ZINC“. That is, until earlier this month, when Redmond completely revamped the way it names threat groups; Microsoft now references ZINC as “Diamond Sleet.”
The ESET researchers said they found a new fake job lure tied to an ongoing Lazarus campaign on LinkedIn designed to compromise Linux operating systems. The malware was found inside of a document that offered an employment contract at the multinational bank HSBC.
“A few weeks ago, a native Linux payload was found on VirusTotal with an HSBC-themed PDF lure,” wrote ESET researchers Peter Kalnai and Marc-Etienne M.Leveille. “This completes Lazarus’s ability to target all major desktop operating systems. In this case, we were able to reconstruct the full chain, from the ZIP file that delivers a fake HSBC job offer as a decoy, up until the final payload.”
ESET said the malicious PDF file used in the scheme appeared to have a file extension of “.pdf,” but that this was a ruse. ESET discovered that the dot in the filename wasn’t a normal period but instead a Unicode character (U+2024) representing a “leader dot,” which is often used in tables of contents to connect section headings with the page numbers on which those sections begin.
“The use of the leader dot in the filename was probably an attempt to trick the file manager into treating the file as an executable instead of a PDF,” the researchers continued. “This could cause the file to run when double-clicked instead of opening it with a PDF viewer.”
ESET said anyone who opened the file would see a decoy PDF with a job offer from HSBC, but in the background the executable file would download additional malware payloads. The ESET team also found the malware was able to manipulate the program icon displayed by the malicious PDF, possibly because fiddling with the file extension could cause the user’s system to display a blank icon for the malware lure.
Kim Zetter, a veteran Wired.com reporter and now independent security journalist, interviewed Mandiant researchers who said they expect “many more victims” will be discovered among the customers of Trading Technologies and 3CX now that news of the compromised software programs is public.
“Mandiant informed Trading Technologies on April 11 that its X_Trader software had been compromised, but the software maker says it has not had time to investigate and verify Mandiant’s assertions,” Zetter wrote in her Zero Day newsletter on Substack. For now, it remains unclear whether the compromised X_Trader software was downloaded by people at other software firms.
If there’s a silver lining here, the X_Trader software had been decommissioned in April 2020 — two years before the hackers allegedly embedded malware in it.
“The company hadn’t released new versions of the software since that time and had stopped providing support for the product, making it a less-than-ideal vector for the North Korean hackers to infect customers,” Zetter wrote.
Microsoft today released software updates to plug 100 security holes in its Windows operating systems and other software, including a zero-day vulnerability that is already being used in active attacks. Not to be outdone, Apple has released a set of important updates addressing two zero-day vulnerabilities that are being used to attack iPhones, iPads and Macs.
On April 7, Apple issued emergency security updates to fix two weaknesses that are being actively exploited, including CVE-2023-28206, which can be exploited by apps to seize control over a device. CVE-2023-28205 can be used by a malicious or hacked website to install code.
Both vulnerabilities are addressed in iOS/iPadOS 16.4.1, iOS 15.7.5, and macOS 12.6.5 and 11.7.6. If you use Apple devices and you don’t have automatic updates enabled (they are on by default), you should probably take care of that soon as detailed instructions on how to attack CVE-2023-28206 are now public.
Microsoft’s bevy of 100 security updates released today include CVE-2023-28252, which is a weakness in Windows that Redmond says is under active attack. The vulnerability is in the Windows Common Log System File System (CLFS) driver, a core Windows component that was the source of attacks targeting a different zero-day vulnerability in February 2023.
“If it seems familiar, that’s because there was a similar 0-day patched in the same component just two months ago,” said Dustin Childs at the Trend Micro Zero Day Initiative. “To me, that implies the original fix was insufficient and attackers have found a method to bypass that fix. As in February, there is no information about how widespread these attacks may be. This type of exploit is typically paired with a code execution bug to spread malware or ransomware.”
According to the security firm Qualys, this vulnerability has been leveraged by cyber criminals to deploy Nokoyawa ransomware.
“This is a relatively new strain for which there is some open source intel to suggest that it is possibly related to Hive ransomware – one of the most notable ransomware families of 2021 and linked to breaches of over 300+ organizations in a matter of just a few months,” said Bharat Jogi, director of vulnerability and threat research at Qualys.
Jogi said while it is still unclear which exact threat actor is targeting CVE-2023-28252, targets have been observed in South and North America, regions across Asia and at organizations in the Middle East.
Satnam Narang at Tenable notes that CVE-2023-28252 is also the second CLFS zero-day disclosed to Microsoft by researchers from Mandiant and DBAPPSecurity (CVE-2022-37969), though it is unclear if both of these discoveries are related to the same attacker.
Seven of the 100 vulnerabilities Microsoft fixed today are rated “Critical,” meaning they can be used to install malicious code with no help from the user. Ninety of the flaws earned Redmond’s slightly less-dire “Important” label, which refers to weaknesses that can be used to undermine the security of the system but which may require some amount of user interaction.
Narang said Microsoft has rated nearly 90% of this month’s vulnerabilities as “Exploitation Less Likely,” while just 9.3% of flaws were rated as “Exploitation More Likely.” Kevin Breen at Immersive Labs zeroed in on several notable flaws in that 9.3%, including CVE-2023-28231, a remote code execution vulnerability in a core Windows network process (DHCP) with a CVSS score of 8.8.
“‘Exploitation more likely’ means it’s not being actively exploited but adversaries may look to try and weaponize this one,” Breen said. “Micorosft does note that successful exploitation requires an attacker to have already gained initial access to the network. This could be via social engineering, spear phishing attacks, or exploitation of other services.”
Breen also called attention to CVE-2023-28220 and CVE-2023-28219 — a pair of remote code execution vulnerabilities affecting Windows Remote Access Servers (RAS) that also earned Microsoft’s “exploitation more likely” label.
“An attacker can exploit this vulnerability by sending a specially crafted connection request to a RAS server, which could lead to remote code execution,” Breen said. While not standard in all organizations, RAS servers typically have direct access from the Internet where most users and services are connected. This makes it extremely enticing for attackers as they don’t need to socially engineer their way into an organization. They can simply scan the internet for RAS servers and automate the exploitation of vulnerable devices.”
For more details on the updates released today, see the SANS Internet Storm Center roundup. If today’s updates cause any stability or usability issues in Windows, AskWoody.com will likely have the lowdown on that.
Please consider backing up your data and/or imaging your system before applying any updates. And feel free to sound off in the comments if you experience any problems as a result of these patches.
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