![]() ![]() Six distinct variants have been identified based on network and code features. Manuscrypt is a full-featured Remote Access Tool (RAT) capable of running arbitrary commands, performing system reconnaissance, and exfiltrating data. The Manuscrypt family of malware is used by advanced persistent threat (APT) cyber actors in the targeting of cryptocurrency exchanges and related entities. Users or administrators should flag activity associated with the malware and report the activity to the Cybersecurity and Infrastructure Security Agency (CISA) or the FBI Cyber Watch (CyWatch), and give the activity the highest priority for enhanced mitigation. This MAR includes malware descriptions related to HIDDEN COBRA, suggested response actions and recommended mitigation techniques. DHS, FBI, and DoD are distributing this MAR to enable network defense and reduce exposure to North Korean government malicious cyber activity. For more information on HIDDEN COBRA activity, visit https//FBI has high confidence that HIDDEN COBRA actors are using malware variants in conjunction with proxy servers to maintain a presence on victim networks and to further network exploitation. Government refers to malicious cyber activity by the North Korean government as HIDDEN COBRA. This malware variant has been identified as COPPERHEDGE. Government partners, DHS, FBI, and DoD identified Remote Access Tool (RAT) malware variants used by the North Korean government. This Malware Analysis Report (MAR) is the result of analytic efforts between the Department of Homeland Security (DHS), the Federal Bureau of Investigation (FBI), and the Department of Defense (DoD).
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