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☐ ☆ ✇ Krebs on Security

The Not-So-Secret Network Access Broker x999xx

By: BrianKrebs — July 3rd 2024 at 16:41

Most accomplished cybercriminals go out of their way to separate their real names from their hacker handles. But among certain old-school Russian hackers it is not uncommon to find major players who have done little to prevent people from figuring out who they are in real life. A case study in this phenomenon is “x999xx,” the nickname chosen by a venerated Russian hacker who specializes in providing the initial network access to various ransomware groups.

x999xx is a well-known “access broker” who frequently sells access to hacked corporate networks — usually in the form of remote access credentials — as well as compromised databases containing large amounts of personal and financial data.

In an analysis published in February 2019, cyber intelligence firm Flashpoint called x999xx one of the most senior and prolific members of the top-tier Russian-language cybercrime forum Exploit, where x999xx could be seen frequently advertising the sale of stolen databases and network credentials.

In August 2023, x999xx sold access to a company that develops software for the real estate industry. In July 2023, x999xx advertised the sale of Social Security numbers, names, and birthdays for the citizenry of an entire U.S. state (unnamed in the auction).

A month earlier, x999xx posted a sales thread for 80 databases taken from Australia’s largest retail company. “You may use this data to demand a ransom or do something different with it,” x999xx wrote on Exploit. “Unfortunately, the flaw was patched fast. [+] no one has used the data yet [+] the data hasn’t been used to send spam [+] the data is waiting for its time.”

In October 2022, x999xx sold administrative access to a U.S. healthcare provider.

ALIAS: MAXNM

The oldest account by the name x999xx appeared in 2009 on the Russian language cybercrime forum Verified, under the email address maxnm@ozersk.com. Ozersk is a city in the Chelyabinsk region of west-central Russia.

According to the breach tracking service Constella Intelligence, the address maxnm@ozersk.com was used more than a decade ago to create an account at Vktontakte (the Russian answer to Facebook) under the name Maxim Kirtsov from Ozersk. Mr. Kirtsov’s profile — “maxnm” — says his birthday is September 5, 1991.

Personal photos Maxnm shared on Vktontakte in 2016. The caption has been machine translated from Russian.

The user x999xx registered on the Russian language cybercrime community Zloy in 2014 using the email address maxnmalias-1@yahoo.com. Constella says this email address was used in 2022 at the Russian shipping service cdek.ru by a Maksim Georgievich Kirtsov from Ozersk.

Additional searches on these contact details reveal that prior to 2009, x999xx favored the handle Maxnm on Russian cybercrime forums. Cyber intelligence company Intel 471 finds the user Maxnm registered on Zloy in 2006 from an Internet address in Chelyabinsk, using the email address kirtsov@telecom.ozersk.ru.

That same email address was used to create Maxnm accounts on several other crime forums, including Spamdot and Exploit in 2005 (also from Chelyabinsk), and Damagelab in 2006.

A search in Constella for the Russian version of Kirtsov’s full name — Кирцов Максим Георгиевич — brings up multiple accounts registered to maksya@icloud.com.

A review of the digital footprint for maksya@icloud.com at osint.industries reveals this address was used a decade ago to register a still-active account at imageshack.com under the name x999xx. That account features numerous screenshots of financial statements from various banks, chat logs with other hackers, and even hacked websites.

x999xx’s Imageshack account includes screenshots of bank account balances from dozens of financial institutions, as well as chat logs with other hackers and pictures of homegrown weed.

Some of the photos in that Imageshack account also appear on Kirtsov’s Vkontakte page, including images of vehicles he owns, as well as pictures of potted marijuana plants. Kirtsov’s Vkontakte profile says that in 2012 he was a faculty member of the Ozersk Technological Institute National Research Nuclear University.

The Vkontakte page lists Kirtsov’s occupation as a website called ozersk[.]today, which on the surface appears to be a blog about life in Ozersk. However, in 2019 the security firm Recorded Future published a blog post which found this domain was being used to host a malicious Cobalt Strike server.

Cobalt Strike is a commercial network penetration testing and reconnaissance tool that is sold only to vetted partners. But stolen or ill-gotten Cobalt Strike licenses are frequently abused by cybercriminal gangs to help lay the groundwork for the installation of ransomware on a victim network.

In August 2023, x999xx posted a message on Exploit saying he was interested in buying a licensed version of Cobalt Strike. A month earlier, x999xx filed a complaint on Exploit against another forum member named Cobaltforce, an apparent onetime partner whose sudden and prolonged disappearance from the community left x999xx and others in the lurch. Cobaltforce recruited people experienced in using Cobalt Strike for ransomware operations, and offered to monetize access to hacked networks for a share of the profits.

DomainTools.com finds ozersk[.]today was registered to the email address dashin2008@yahoo.com, which also was used to register roughly two dozen other domains, including x999xx[.]biz. Virtually all of those domains were registered to Maxim Kirtsov from Ozersk. Below is a mind map used to track the identities mentioned in this story.

A visual depiction of the data points connecting x999xx to Max Kirtsov.

x999xx is a prolific member of the Russian webmaster forum “Gofuckbiz,” with more than 2,000 posts over nearly a decade, according to Intel 471. In one post from 2016, x999xx asked whether anyone knew where he could buy a heat lamp that simulates sunlight, explaining that one his pet rabbits had recently perished for lack of adequate light and heat. Mr. Kirtsov’s Vkontakte page includes several pictures of caged rabbits from 2015 and earlier.

CONFIRMATION

Reached via email, Mr. Kirtsov acknowledged that he is x999xx. Kirtsov said he and his team are also regular readers of KrebsOnSecurity.

“We’re glad to hear and read you,” Kirtsov replied.

Asked whether he was concerned about the legal and moral implications of his work, Kirtsov downplayed his role in ransomware intrusions, saying he was more focused on harvesting data.

“I consider myself as committed to ethical practices as you are,” Kirtsov wrote. “I have also embarked on research and am currently mentoring students. You may have noticed my activities on a forum, which I assume you know of through information gathered from public sources, possibly using the new tool you reviewed.”

“Regarding my posts about selling access, I must honestly admit, upon reviewing my own actions, I recall such mentions but believe they were never actualized,” he continued. “Many use the forum for self-serving purposes, which explains why listings of targets for sale have dwindled — they simply ceased being viable.”

Kirtsov asserted that he is not interested in harming healthcare institutions, just in stealing their data.

“As for health-related matters, I was once acquainted with affluent webmasters who would pay up to $50 for every 1000 health-themed emails,” Kirtsov said. “Therefore, I had no interest in the more sensitive data from medical institutions like X-rays, insurance numbers, or even names; I focused solely on emails. I am proficient in SQL, hence my ease with handling data like IDs and emails. And i never doing spam or something like this.”

On the Russian crime forums, x999xx said he never targets anything or anyone in Russia, and that he has little to fear from domestic law enforcement agencies provided he remains focused on foreign adversaries.

x999xx’s lackadaisical approach to personal security mirrors that of Wazawaka, another top Russian access broker who sold access to countless organizations and even operated his own ransomware affiliate programs.

“Don’t shit where you live, travel local, and don’t go abroad,” Wazawaka said of his own personal mantra. “Mother Russia will help you. Love your country, and you will always get away with everything.”

In January 2022, KrebsOnSecurity followed clues left behind by Wazawaka to identify him as 32-year-old Mikhail Matveev from Khakassia, Russia. In May 2023, the U.S. Department of Justice indicted Matveev as a key figure in several ransomware groups that collectively extorted hundreds of millions of dollars from victim organizations. The U.S. State Department is offering a $10 million reward for information leading to the capture and/or prosecution of Matveev.

Perhaps in recognition that many top ransomware criminals are largely untouchable so long as they remain in Russia, western law enforcement agencies have begun focusing more on getting inside the heads of those individuals. These so-called “psyops” are aimed at infiltrating ransomware-as-a-service operations, disrupting major cybercrime services, and decreasing trust within cybercriminal communities.

When authorities in the U.S. and U.K. announced in February 2024 that they’d infiltrated and seized the infrastructure used by the infamous LockBit ransomware gang, they borrowed the existing design of LockBit’s victim shaming website to link instead to press releases about the takedown, and included a countdown timer that was eventually replaced with the personal details of LockBit’s alleged leader.

In May 2024, law enforcement agencies in the United States and Europe announced Operation Endgame, a coordinated action against some of the most popular cybercrime platforms for delivering ransomware and data-stealing malware. The Operation Endgame website also included a countdown timer, which served to tease the release of several animated videos that mimic the same sort of flashy, short advertisements that established cybercriminals often produce to promote their services online.

☐ ☆ ✇ Krebs on Security

A Closer Look at the Snatch Data Ransom Group

By: BrianKrebs — September 30th 2023 at 19:47

Earlier this week, KrebsOnSecurity revealed that the darknet website for the Snatch ransomware group was leaking data about its users and the crime gang’s internal operations. Today, we’ll take a closer look at the history of Snatch, its alleged founder, and their claims that everyone has confused them with a different, older ransomware group by the same name.

According to a September 20, 2023 joint advisory from the FBI and the U.S. Cybersecurity and Infrastructure Security Administration (CISA), Snatch was originally named Team Truniger, based on the nickname of the group’s founder and organizer — Truniger.

The FBI/CISA report says Truniger previously operated as an affiliate of GandCrab, an early ransomware-as-a-service offering that closed up shop after several years and claims to have extorted more than $2 billion from victims. GandCrab dissolved in July 2019, and is thought to have become “REvil,” one of the most ruthless and rapacious Russian ransomware groups of all time.

The government says Snatch used a customized ransomware variant notable for rebooting Microsoft Windows devices into Safe Mode — enabling the ransomware to circumvent detection by antivirus or endpoint protection — and then encrypting files when few services are running.

“Snatch threat actors have been observed purchasing previously stolen data from other ransomware variants in an attempt to further exploit victims into paying a ransom to avoid having their data released on Snatch’s extortion blog,” the FBI/CISA alert reads. It continues:

“Prior to deploying the ransomware, Snatch threat actors were observed spending up to three months on a victim’s system. Within this timeframe, Snatch threat actors exploited the victim’s network moving laterally across the victim’s network with RDP for the largest possible deployment of ransomware and searching for files and folders for data exfiltration followed by file encryption.”

New York City-based cyber intelligence firm Flashpoint said the Snatch ransomware group was created in 2018, based on Truniger’s recruitment both on Russian language cybercrime forums and public Russian programming boards. Flashpoint said Truniger recruited “pen testers” for a new, then-unnamed cybercrime group, by posting their private Jabber instant messenger contact details on multiple Russian language coding forums, as well as on Facebook.

“The command requires Windows system administrators,” Truniger’s ads explained. “Experience in backup, increase privileges, mikicatz, network. Details after contacting on jabber: truniger@xmpp[.]jp.”

In at least some of those recruitment ads — like one in 2018 on the forum sysadmins[.]ru –the username promoting Truniger’s contact information was Semen7907. In April 2020, Truniger was banned from two of the top Russian cybercrime forums, where members from both forums confirmed that Semen7907 was one of Truniger’s known aliases.

[SIDE NOTE: Truniger was banned because he purchased credentials to a company from a network access broker on the dark web, and although he promised to share a certain percentage of whatever ransom amount Truniger’s group extracted from the victim, Truniger paid the access broker just a few hundred dollars off of a six-figure ransom].

According to Constella Intelligence, a data breach and threat actor research platform, a user named Semen7907 registered in 2017 on the Russian-language programming forum pawno[.]ru using the email address tretyakov-files@yandex.ru.

That same email address was assigned to the user “Semen-7907” on the now defunct gaming website tunngle.net, which suffered a data breach in 2020. Semen-7907 registered at Tunngle from the Internet address 31.192.175[.]63, which is in Yekaterinburg, RU.

Constella reports that tretyakov-files@yandex.ru was also used to register an account at the online game stalker[.]so with the nickname Trojan7907.

There is a Skype user by the handle semen7907, and which has the name Semyon Tretyakov from Yekaterinburg, RU. Constella also found a breached record from the Russian mobile telephony site tele2[.]ru, which shows that a user from Yekaterinburg registered in 2019 with the name Semyon Sergeyvich Tretyakov and email address tretyakov-files@ya.ru.

The above accounts, as well as the email address semen_7907@mail.ru, were all registered or accessed from the same Yekaterinburg Internet address mentioned previously: 31.192.175.63. The Russian mobile phone number associated with that tele2[.]ru account is connected to the Telegram account “Perchatka,” (“glove” in Russian).

BAD BEATS

Reached via Telegram, Perchatka (a.k.a. Mr. Tretyakov) said he was not a cybercriminal, and that he currently has a full-time job working in IT at a major company (he declined to specify which).

Presented with the information gathered for this report (and more that is not published here), Mr. Tretyakov acknowledged that Semen7907 was his account on sysadmins[.]ru, the very same account Truniger used to recruit hackers for the Snatch Ransomware group back in 2018.

However, he claims that he never made those posts, and that someone else must have assumed control over his sysadmins[.]ru account and posted as him. Mr. Tretyakov said that KrebsOnSecurity’s outreach this week was the first time he became aware that his sysadmins[.]ru account was used without his permission.

Mr. Tretyakov suggested someone may have framed him, pointing to an August 2023 story at a Russian news outlet about the reported hack and leak of the user database from sysadmins[.]ru, allegedly at the hands of a pro-Ukrainian hacker group called CyberSec.

“Recently, because of the war in Ukraine, a huge number of databases have been leaked and finding information about a person is not difficult,” Tretyakov said. “I’ve been using this login since about 2013 on all the forums where I register, and I don’t always set a strong password. If I had done something illegal, I would have hidden much better :D.”

[For the record, KrebsOnSecurity does not generally find this to be the case, as the ongoing Breadcrumbs series will attest.]

A Semyon Sergeyvich Tretyakov is listed as the composer of a Russian-language rap song called “Parallels,” which seems to be about the pursuit of a high-risk lifestyle online. A snippet of the song goes:

“Someone is on the screen, someone is on the blacklist
I turn on the timer and calculate the risks
I don’t want to stay broke And in the pursuit of money
I can’t take these zeros Life is like a zebra –
everyone wants to be first Either the stripes are white,
or we’re moving through the wilds I won’t waste time.”

Mr. Tretyakov said he was not the author of that particular rhyme, but that he has been known to record his own rhythms.

“Sometimes I make bad beats,” he said. “Soundcloud.”

NEVER MIND THE DOMAIN NAME

The FBI/CISA alert on Snatch Ransomware (PDF) includes an interesting caveat: It says Snatch actually deploys ransomware on victim systems, but it also acknowledges that the current occupants of Snatch’s dark and clear web domains call themselves Snatch Team, and maintain that they are not the same people as Snatch Ransomware from 2018.

Here’s the interesting bit from the FBI/CISA report:

“Since November 2021, an extortion site operating under the name Snatch served as a clearinghouse for data exfiltrated or stolen from victim companies on Clearnet and TOR hosted by a bulletproof hosting service. In August 2023, individuals claiming to be associated with the blog gave a media interview claiming the blog was not associated with Snatch ransomware and “none of our targets has been attacked by Ransomware Snatch…”, despite multiple confirmed Snatch victims’ data appearing on the blog alongside victims associated with other ransomware groups, notably Nokoyawa and Conti.”

Avid readers will recall a story here earlier this week about Snatch Team’s leaky darknet website based in Yekaterinburg, RU that exposed their internal operations and Internet addresses of their visitors. The leaked data suggest that Snatch is one of several ransomware groups using paid ads on Google.com to trick people into installing malware disguised as popular free software, such as Microsoft TeamsAdobe ReaderMozilla Thunderbird, and Discord.

Snatch Team claims to deal only in stolen data — not in deploying ransomware malware to hold systems hostage.

Representatives of the Snatch Team recently answered questions from Databreaches.net about the claimed discrepancy in the FBI/CISA report.

“First of all, we repeat once again that we have nothing to do with Snatch Ransomware, we are Security Notification Attachment, and we have never violated the terms of the concluded transactions, because our honesty and openness is the guarantee of our income,” the Snatch Team wrote to Databreaches.net in response to questions.

But so far the Snatch Team has not been able to explain why it is using the very same domain names that the Snatch ransomware group used?

Their claim is even more unbelievable because the Snatch Team members told Databreaches.net they didn’t even know that a ransomware group with that name already existed when they initially formed just two years ago.

This is difficult to swallow because even if they were a separate group, they’d still need to somehow coordinate the transfer of the Ransomware group’s domains on the clear and dark webs. If they were hoping for a fresh start or separation, why not just pick a new name and new web destination?

“Snatchteam[.]cc is essentially a data market,” they continued. “The only thing to underline is that we are against selling leaked information, sticking to the idea of free access. Absolutely any team can come to us and offer information for publication. Even more, we have heard rumors that a number of ransomware teams scare their clients that they will post leaked information on our resource. We do not have our own ransomware, but we are open to cooperation on placement and monetization of dates (sic).”

Maybe Snatch Team does not wish to be associated with Snatch Ransomware because they currently believe stealing data and then extorting victim companies for money is somehow less evil than infecting all of the victim’s servers and backups with ransomware.

It is also likely that Snatch Team is well aware of how poorly some of their founders covered their tracks online, and are hoping for a do-over on that front.

☐ ☆ ✇ Krebs on Security

Ask Fitis, the Bear: Real Crooks Sign Their Malware

By: BrianKrebs — June 1st 2023 at 16:15

Code-signing certificates are supposed to help authenticate the identity of software publishers, and provide cryptographic assurance that a signed piece of software has not been altered or tampered with. Both of these qualities make stolen or ill-gotten code-signing certificates attractive to cybercriminal groups, who prize their ability to add stealth and longevity to malicious software. This post is a deep dive on “Megatraffer,” a veteran Russian hacker who has practically cornered the underground market for malware focused code-signing certificates since 2015.

One of Megatraffer’s ads on an English-language cybercrime forum.

A review of Megatraffer’s posts on Russian crime forums shows this user began peddling individual stolen code-signing certs in 2015 on the Russian-language forum Exploit, and soon expanded to selling certificates for cryptographically signing applications and files designed to run in Microsoft Windows, Java, Adobe AIR, Mac and Microsoft Office.

Megatraffer explained that malware purveyors need a certificate because many antivirus products will be far more interested in unsigned software, and because signed files downloaded from the Internet don’t tend to get blocked by security features built into modern web browsers. Additionally, newer versions of Microsoft Windows will complain with a bright yellow or red alert message if users try to install a program that is not signed.

“Why do I need a certificate?” Megatraffer asked rhetorically in their Jan. 2016 sales thread on Exploit. “Antivirus software trusts signed programs more. For some types of software, a digital signature is mandatory.”

At the time, Megatraffer was selling unique code-signing certificates for $700 apiece, and charging more than twice that amount ($1,900) for an “extended validation” or EV code-signing cert, which is supposed to only come with additional identity vetting of the certificate holder. According to Megatraffer, EV certificates were a “must-have” if you wanted to sign malicious software or hardware drivers that would reliably work in newer Windows operating systems.

Part of Megatraffer’s ad. Image: Ke-la.com.

Megatraffer has continued to offer their code-signing services across more than a half-dozen other Russian-language cybercrime forums, mostly in the form of sporadically available EV and non-EV code-signing certificates from major vendors like Thawte and Comodo.

More recently, it appears Megatraffer has been working with ransomware groups to help improve the stealth of their malware. Shortly after Russia invaded Ukraine in February 2022, someone leaked several years of internal chat logs from the Conti ransomware gang, and those logs show Megatraffer was working with the group to help code-sign their malware between July and October 2020.

WHO IS MEGATRAFFER?

According to cyber intelligence firm Intel 471, Megatraffer has been active on more than a half-dozen crime forums from September 2009 to the present day. And on most of these identities, Megatraffer has used the email address 774748@gmail.com. That same email address also is tied to two forum accounts for a user with the handle “O.R.Z.”

Constella Intelligence, a company that tracks exposed databases, finds that 774748@gmail.com was used in connection with just a handful of passwords, but most frequently the password “featar24“. Pivoting off of that password reveals a handful of email addresses, including akafitis@gmail.com.

Intel 471 shows akafitis@gmail.com was used to register another O.R.Z. user account — this one on Verified[.]ru in 2008. Prior to that, akafitis@gmail.com was used as the email address for the account “Fitis,” which was active on Exploit between September 2006 and May 2007. Constella found the password “featar24” also was used in conjunction with the email address spampage@yandex.ru, which is tied to yet another O.R.Z. account on Carder[.]su from 2008.

The email address akafitis@gmail.com was used to create a Livejournal blog profile named Fitis that has a large bear as its avatar. In November 2009, Fitis wrote, “I am the perfect criminal. My fingerprints change beyond recognition every few days. At least my laptop is sure of it.”

Fitis’s Livejournal account. Image: Archive.org.

Fitis’s real-life identity was exposed in 2010 after two of the biggest sponsors of pharmaceutical spam went to war with each other, and large volumes of internal documents, emails and chat records seized from both spam empires were leaked to this author. That protracted and public conflict formed the backdrop of my 2014 book — “Spam Nation: The Inside Story of Organized Cybercrime, from Global Epidemic to Your Front Door.

One of the leaked documents included a Microsoft Excel spreadsheet containing the real names, addresses, phone numbers, emails, street addresses and WebMoney addresses for dozens of top earners in Spamit — at the time the most successful pharmaceutical spam affiliate program in the Russian hacking scene and one that employed most of the top Russian botmasters.

That document shows Fitis was one of Spamit’s most prolific recruiters, bringing more than 75 affiliates to the Spamit program over several years prior to its implosion in 2010 (and earning commissions on any future sales from all 75 affiliates).

The document also says Fitis got paid using a WebMoney account that was created when its owner presented a valid Russian passport for a Konstantin Evgenievich Fetisov, born Nov. 16, 1982 and residing in Moscow. Russian motor vehicle records show two different vehicles are registered to this person at the same Moscow address.

The most interesting domain name registered to the email address spampage@yahoo.com, fittingly enough, is fitis[.]ru, which DomainTools.com says was registered in 2005 to a Konstantin E. Fetisov from Moscow.

The Wayback Machine at archive.org has a handful of mostly blank pages indexed for fitis[.]ru in its early years, but for a brief period in 2007 it appears this website was inadvertently exposing all of its file directories to the Internet.

One of the exposed files — Glavmed.html — is a general invitation to the infamous Glavmed pharmacy affiliate program, a now-defunct scheme that paid tens of millions of dollars to affiliates who advertised online pill shops mainly by hacking websites and manipulating search engine results. Glavmed was operated by the same Russian cybercriminals who ran the Spamit program.

A Google translated ad circa 2007 recruiting for the pharmacy affiliate program Glavmed, which told interested applicants to contact the ICQ number used by Fitis, a.k.a. MegaTraffer. Image: Archive.org.

Archive.org shows the fitis[.]ru webpage with the Glavmed invitation was continuously updated with new invite codes. In their message to would-be Glavmed affiliates, the program administrator asked applicants to contact them at the ICQ number 165540027, which Intel 471 found was an instant messenger address previously used by Fitis on Exploit.

The exposed files in the archived version of fitis[.]ru include source code for malicious software, lists of compromised websites used for pharmacy spam, and a handful of what are apparently personal files and photos. Among the photos is a 2007 image labeled merely “fitis.jpg,” which shows a bespectacled, bearded young man with a ponytail standing next to what appears to be a newly-married couple at a wedding ceremony.

Mr. Fetisov did not respond to requests for comment.

As a veteran organizer of affiliate programs, Fitis did not waste much time building a new moneymaking collective after Spamit closed up shop. New York City-based cyber intelligence firm Flashpoint found that Megatraffer’s ICQ was the contact number for Himba[.]ru, a cost-per-acquisition (CPA) program launched in 2012 that paid handsomely for completed application forms tied to a variety of financial instruments, including consumer credit cards, insurance policies, and loans.

“Megatraffer’s entrenched presence on cybercrime forums strongly suggests that malicious means are used to source at least a portion of traffic delivered to HIMBA’s advertisers,” Flashpoint observed in a threat report on the actor.

Intel 471 finds that Himba was an active affiliate program until around May 2019, when it stopping paying its associates.

Fitis’s Himba affiliate program, circa February 2014. Image: Archive.org.

Flashpoint notes that in September 2015, Megatraffer posted a job ad on Exploit seeking experienced coders to work on browser plugins, installers and “loaders” — basically remote access trojans (RATs) that establish communication between the attacker and a compromised system.

“The actor specified that he is looking for full-time, onsite help either in his Moscow or Kiev locations,” Flashpoint wrote.

❌