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Hackers breached 3 US antivirus companies, researchers reveal

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Hackers breached 3 US antivirus companies, researchers reveal. Source code, network access being sold online by "Fxmsp" collective.

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In a report published today, researchers at the threat-research company Advanced Intelligence (AdvIntel) revealed that a collective of Russian and English-speaking hackers are actively marketing the spoils of data breaches at three US-based antivirus software vendors. The collective, calling itself “Fxmsp,” is selling both source code and network access to the companies for $300,000, providing samples that show strong evidence of the validity of their claims.

Yelisey Boguslavskiy, Director of Research at AdvIntel, told Ars that his company notified “the potential victim entities” of the breach through partner organizations; it also provided the details to US law enforcement. In March, Fxmsp offered the data “through a private conversation,” Boguslavskiy said. “However, they claimed that their proxy sellers will announce the sale on forums.”

Fxmsp has a well-known reputation in the security community for selling access to breaches, focusing on large, global companies and government organizations. The group was singled out in a 2018 FireEye report on Internet crime for selling access to corporate networks worldwide, including a global breach of a luxury hotel group—potentially tied to the Marriott/Starwood breach revealed last November. AdvIntel’s researchers say the group has sold “verifiable corporate breaches,” pulling in profits approaching $1 million. Over the past two years, Fxmsp has worked to create a network of proxy resellers to promote and sell access to the group’s collection of breaches through criminal marketplaces.

In March, the group “stated they could provide exclusive information stolen from three top anti-virus companies located in the United States,” AdvIntel’s researchers reported in a blog post going live today. “They confirmed that they have exclusive source code related to the companies' software development.” And the group offered privately to sell the source code and network access to all three companies for “over $300,000,” the researchers said.

Enlarge / A screen shot of samples of source code presented by the hacking collective Fxmsp showing access to a major US antivirus software company.AdvIntel LLC
According to the AdvIntel report, Fxmsp had managed to steal source code from the three companies that included code for antivirus agents, analytic code based on machine learning, and “security plug-ins” for web browsers. “Fxmsp also commented on the capabilities of the different companies’ software and assessed their efficiency,” the researchers wrote.

In the past, Fxmsp’s breaches have typically focused on exploiting Internet-connected remote desktop protocol (RDP) and Active Directory servers. But more recently, the group has claimed to have developed a credential-stealing botnet—malware that collect user names and passwords—to target high-value networks that are better secured. “Fxmsp has claimed that developing this botnet and improving its capabilities for stealing information from secured systems is their main goal,” AdvIntel’s researchers noted.