North Korean Malicious Cyber Activity

The Cybersecurity and Infrastructure Security Agency (CISA),  the Federal Bureau of Investigation (FBI), and the U.S. Cyber Command Cyber National Mission Force (CNMF) identified tactics, techniques, and procedures (TTPs) used by North Korean advanced persistent threat (APT) group Kimsuky to gain intelligence on various topics of interest to the North Korean government. The U.S. Government refers to malicious cyber activity by the North Korean government as HIDDEN COBRA.

Kimsuky is engaged in ongoing cyber operations against worldwide targets to gain intelligence for North Korea, specifically on foreign policy and national security issues related to the Korean peninsula, nuclear policy, and sanctions. CISA, FBI, and CNMF recommend individuals and organizations within commercial sector businesses increase their defenses and adopt a heightened state of awareness.

The information contained in the alerts and MARs listed below is the result of analytic efforts between the U.S. Department of Homeland Security, the U.S. Department of Defense, and the Federal Bureau of Investigation to provide technical details on the tools and infrastructure used by cyber actors of the North Korean government. Each MAR includes malware descriptions, suggested response actions, and recommended mitigation techniques.

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. The U.S. Government refers to the malicious cyber activity by the North Korean government as HIDDEN COBRA.