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International law enforcement coalition dismantles illegal uses of penetration testing tool used in ransomware

Jul, 05, 2024 Hi-network.com

An international coalition of law enforcement agencies has dismantled hundreds of illegal installations of Cobalt Strike, a penetration testing tool frequently abused by state-sponsored and criminal hackers in ransomware attacks. The operation, coordinated by Britain's National Crime Agency (NCA), targeted 690 IP addresses hosting illegal versions of the software across 27 countries.

Cobalt Strike, now owned by Fortra, was developed in 2012 to simulate hacker attacks on networks. However, its effectiveness has led to widespread abuse by malicious actors using pirated versions. The crackdown is part of broader efforts to combat ransomware gangs by disrupting critical points in their operations, similar to the recent seizure of bulletproof hosting provider LolekHosted.

In addition to legitimate uses, Cobalt Strike has been exploited by hackers linked to Russia, China, and North Korea. The NCA highlighted that pirated versions of the software, available on illegal marketplaces and the dark web since the mid-2010s, have become a preferred tool for network intrusions and rapid ransomware deployment.

Typically, unlicensed versions of Cobalt Strike are used in spear phishing campaigns to install beacons on target devices, allowing attackers to profile and remotely access networks. Its multifunctional nature, including command and control management, makes it a 'Swiss army knife' for cybercriminals and nation-state actors, according to Don Smith, VP of threat research at Secureworks Counter Threats Unit.

Europol confirmed Fortra's significant efforts to prevent software abuse and its partnership throughout the investigation. Nevertheless, older versions of Cobalt Strike have been cracked and used by criminals, linking the tool to numerous malware and ransomware cases, including those involving RYUK, Trickbot, and Conti.

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