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The financial technology firm Finastra is investigating the alleged large-scale theft of information from its internal file transfer platform, KrebsOnSecurity has learned. Finastra, which provides software and services to 45 of the world’s top 50 banks, notified customers of the security incident after a cybercriminal began selling more than 400 gigabytes of data purportedly stolen from the company.
London-based Finastra has offices in 42 countries and reported $1.9 billion in revenues last year. The company employs more than 7,000 people and serves approximately 8,100 financial institutions around the world. A major part of Finastra’s day-to-day business involves processing huge volumes of digital files containing instructions for wire and bank transfers on behalf of its clients.
On November 8, 2024, Finastra notified financial institution customers that on Nov. 7 its security team detected suspicious activity on Finastra’s internally hosted file transfer platform. Finastra also told customers that someone had begun selling large volumes of files allegedly stolen from its systems.
“On November 8, a threat actor communicated on the dark web claiming to have data exfiltrated from this platform,” reads Finastra’s disclosure, a copy of which was shared by a source at one of the customer firms.
“There is no direct impact on customer operations, our customers’ systems, or Finastra’s ability to serve our customers currently,” the notice continued. “We have implemented an alternative secure file sharing platform to ensure continuity, and investigations are ongoing.”
But its notice to customers does indicate the intruder managed to extract or “exfiltrate” an unspecified volume of customer data.
“The threat actor did not deploy malware or tamper with any customer files within the environment,” the notice reads. “Furthermore, no files other than the exfiltrated files were viewed or accessed. We remain focused on determining the scope and nature of the data contained within the exfiltrated files.”
In a written statement in response to questions about the incident, Finastra said it has been “actively and transparently responding to our customers’ questions and keeping them informed about what we do and do not yet know about the data that was posted.” The company also shared an updated communication to its clients, which said while it was still investigating the root cause, “initial evidence points to credentials that were compromised.”
“Additionally, we have been sharing Indicators of Compromise (IOCs) and our CISO has been speaking directly with our customers’ security teams to provide updates on the investigation and our eDiscovery process,” the statement continues. Here is the rest of what they shared:
“In terms of eDiscovery, we are analyzing the data to determine what specific customers were affected, while simultaneously assessing and communicating which of our products are not dependent on the specific version of the SFTP platform that was compromised. The impacted SFTP platform is not used by all customers and is not the default platform used by Finastra or its customers to exchange data files associated with a broad suite of our products, so we are working as quickly as possible to rule out affected customers. However, as you can imagine, this is a time-intensive process because we have many large customers that leverage different Finastra products in different parts of their business. We are prioritizing accuracy and transparency in our communications.
Importantly, for any customers who are deemed to be affected, we will be reaching out and working with them directly.”
On Nov. 8, a cybercriminal using the nickname “abyss0” posted on the English-language cybercrime community BreachForums that they’d stolen files belonging to some of Finastra’s largest banking clients. The data auction did not specify a starting or “buy it now” price, but said interested buyers should reach out to them on Telegram.
abyss0’s Nov. 7 sales thread on BreachForums included many screenshots showing the file directory listings for various Finastra customers. Image: Ke-la.com.
According to screenshots collected by the cyber intelligence platform Ke-la.com, abyss0 first attempted to sell the data allegedly stolen from Finastra on October 31, but that earlier sales thread did not name the victim company. However, it did reference many of the same banks called out as Finastra customers in the Nov. 8 post on BreachForums.
The original October 31 post from abyss0, where they advertise the sale of data from several large banks that are customers of a large financial software company. Image: Ke-la.com.
The October sales thread also included a starting price: $20,000. By Nov. 3, that price had been reduced to $10,000. A review of abyss0’s posts to BreachForums reveals this user has offered to sell databases stolen in several dozen other breaches advertised over the past six months.
The apparent timeline of this breach suggests abyss0 gained access to Finastra’s file sharing system at least a week before the company says it first detected suspicious activity, and that the Nov. 7 activity cited by Finastra may have been the intruder returning to exfiltrate more data.
Maybe abyss0 found a buyer who paid for their early retirement. We may never know, because this person has effectively vanished. The Telegram account that abyss0 listed in their sales thread appears to have been suspended or deleted. Likewise, abyss0’s account on BreachForums no longer exists, and all of their sales threads have since disappeared.
It seems improbable that both Telegram and BreachForums would have given this user the boot at the same time. The simplest explanation is that something spooked abyss0 enough for them to abandon a number of pending sales opportunities, in addition to a well-manicured cybercrime persona.
In March 2020, Finastra suffered a ransomware attack that sidelined a number of the company’s core businesses for days. According to reporting from Bloomberg, Finastra was able to recover from that incident without paying a ransom.
This is a developing story. Updates will be noted with timestamps. If you have any additional information about this incident, please reach out to krebsonsecurity @ gmail.com or at protonmail.com.
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WormGPT, a private new chatbot service advertised as a way to use Artificial Intelligence (AI) to write malicious software without all the pesky prohibitions on such activity enforced by the likes of ChatGPT and Google Bard, has started adding restrictions of its own on how the service can be used. Faced with customers trying to use WormGPT to create ransomware and phishing scams, the 23-year-old Portuguese programmer who created the project now says his service is slowly morphing into “a more controlled environment.”
Image: SlashNext.com.
The large language models (LLMs) made by ChatGPT parent OpenAI or Google or Microsoft all have various safety measures designed to prevent people from abusing them for nefarious purposes — such as creating malware or hate speech. In contrast, WormGPT has promoted itself as a new, uncensored LLM that was created specifically for cybercrime activities.
WormGPT was initially sold exclusively on HackForums, a sprawling, English-language community that has long featured a bustling marketplace for cybercrime tools and services. WormGPT licenses are sold for prices ranging from 500 to 5,000 Euro.
“Introducing my newest creation, ‘WormGPT,’ wrote “Last,” the handle chosen by the HackForums user who is selling the service. “This project aims to provide an alternative to ChatGPT, one that lets you do all sorts of illegal stuff and easily sell it online in the future. Everything blackhat related that you can think of can be done with WormGPT, allowing anyone access to malicious activity without ever leaving the comfort of their home.”
WormGPT’s core developer and frontman “Last” promoting the service on HackForums. Image: SlashNext.
In July, an AI-based security firm called SlashNext analyzed WormGPT and asked it to create a “business email compromise” (BEC) phishing lure that could be used to trick employees into paying a fake invoice.
“The results were unsettling,” SlashNext’s Daniel Kelley wrote. “WormGPT produced an email that was not only remarkably persuasive but also strategically cunning, showcasing its potential for sophisticated phishing and BEC attacks.”
SlashNext asked WormGPT to compose this BEC phishing email. Image: SlashNext.
A review of Last’s posts on HackForums over the years shows this individual has extensive experience creating and using malicious software. In August 2022, Last posted a sales thread for “Arctic Stealer,” a data stealing trojan and keystroke logger that he sold there for many months.
“I’m very experienced with malwares,” Last wrote in a message to another HackForums user last year.
Last has also sold a modified version of the information stealer DCRat, as well as an obfuscation service marketed to malicious coders who sell their creations and wish to insulate them from being modified or copied by customers.
Shortly after joining the forum in early 2021, Last told several different Hackforums users his name was Rafael and that he was from Portugal. HackForums has a feature that allows anyone willing to take the time to dig through a user’s postings to learn when and if that user was previously tied to another account.
That account tracing feature reveals that while Last has used many pseudonyms over the years, he originally used the nickname “ruiunashackers.” The first search result in Google for that unique nickname brings up a TikTok account with the same moniker, and that TikTok account says it is associated with an Instagram account for a Rafael Morais from Porto, a coastal city in northwest Portugal.
Reached via Instagram and Telegram, Morais said he was happy to chat about WormGPT.
“You can ask me anything,” Morais said. “I’m an open book.”
Morais said he recently graduated from a polytechnic institute in Portugal, where he earned a degree in information technology. He said only about 30 to 35 percent of the work on WormGPT was his, and that other coders are contributing to the project. So far, he says, roughly 200 customers have paid to use the service.
“I don’t do this for money,” Morais explained. “It was basically a project I thought [was] interesting at the beginning and now I’m maintaining it just to help [the] community. We have updated a lot since the release, our model is now 5 or 6 times better in terms of learning and answer accuracy.”
WormGPT isn’t the only rogue ChatGPT clone advertised as friendly to malware writers and cybercriminals. According to SlashNext, one unsettling trend on the cybercrime forums is evident in discussion threads offering “jailbreaks” for interfaces like ChatGPT.
“These ‘jailbreaks’ are specialised prompts that are becoming increasingly common,” Kelley wrote. “They refer to carefully crafted inputs designed to manipulate interfaces like ChatGPT into generating output that might involve disclosing sensitive information, producing inappropriate content, or even executing harmful code. The proliferation of such practices underscores the rising challenges in maintaining AI security in the face of determined cybercriminals.”
Morais said they have been using the GPT-J 6B model since the service was launched, although he declined to discuss the source of the LLMs that power WormGPT. But he said the data set that informs WormGPT is enormous.
“Anyone that tests wormgpt can see that it has no difference from any other uncensored AI or even chatgpt with jailbreaks,” Morais explained. “The game changer is that our dataset [library] is big.”
Morais said he began working on computers at age 13, and soon started exploring security vulnerabilities and the possibility of making a living by finding and reporting them to software vendors.
“My story began in 2013 with some greyhat activies, never anything blackhat tho, mostly bugbounty,” he said. “In 2015, my love for coding started, learning c# and more .net programming languages. In 2017 I’ve started using many hacking forums because I have had some problems home (in terms of money) so I had to help my parents with money… started selling a few products (not blackhat yet) and in 2019 I started turning blackhat. Until a few months ago I was still selling blackhat products but now with wormgpt I see a bright future and have decided to start my transition into whitehat again.”
WormGPT sells licenses via a dedicated channel on Telegram, and the channel recently lamented that media coverage of WormGPT so far has painted the service in an unfairly negative light.
“We are uncensored, not blackhat!” the WormGPT channel announced at the end of July. “From the beginning, the media has portrayed us as a malicious LLM (Language Model), when all we did was use the name ‘blackhatgpt’ for our Telegram channel as a meme. We encourage researchers to test our tool and provide feedback to determine if it is as bad as the media is portraying it to the world.”
It turns out, when you advertise an online service for doing bad things, people tend to show up with the intention of doing bad things with it. WormGPT’s front man Last seems to have acknowledged this at the service’s initial launch, which included the disclaimer, “We are not responsible if you use this tool for doing bad stuff.”
But lately, Morais said, WormGPT has been forced to add certain guardrails of its own.
“We have prohibited some subjects on WormGPT itself,” Morais said. “Anything related to murders, drug traffic, kidnapping, child porn, ransomwares, financial crime. We are working on blocking BEC too, at the moment it is still possible but most of the times it will be incomplete because we already added some limitations. Our plan is to have WormGPT marked as an uncensored AI, not blackhat. In the last weeks we have been blocking some subjects from being discussed on WormGPT.”
Still, Last has continued to state on HackForums — and more recently on the far more serious cybercrime forum Exploit — that WormGPT will quite happily create malware capable of infecting a computer and going “fully undetectable” (FUD) by virtually all of the major antivirus makers (AVs).
“You can easily buy WormGPT and ask it for a Rust malware script and it will 99% sure be FUD against most AVs,” Last told a forum denizen in late July.
Asked to list some of the legitimate or what he called “white hat” uses for WormGPT, Morais said his service offers reliable code, unlimited characters, and accurate, quick answers.
“We used WormGPT to fix some issues on our website related to possible sql problems and exploits,” he explained. “You can use WormGPT to create firewalls, manage iptables, analyze network, code blockers, math, anything.”
Morais said he wants WormGPT to become a positive influence on the security community, not a destructive one, and that he’s actively trying to steer the project in that direction. The original HackForums thread pimping WormGPT as a malware writer’s best friend has since been deleted, and the service is now advertised as “WormGPT – Best GPT Alternative Without Limits — Privacy Focused.”
“We have a few researchers using our wormgpt for whitehat stuff, that’s our main focus now, turning wormgpt into a good thing to [the] community,” he said.
It’s unclear yet whether Last’s customers share that view.
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