The Department of Homeland Security Cybersecurity & Infrastructure Security Agency (CISA) this week issued Alert (AA20-301A) titled North Korean Advanced Persistent Threat Focus: Kimsuky warning U.S. businesses, and particularly those in the commercial sector, about tactics used by North Korean advanced persistent threat (APT) group Kimusky. https://us-cert.cisa.gov/ncas/alerts/aa20-301a
The Alert, co-authored by the Federal Bureau of Investigation (FBI) and the U.S. Cyber Command Cyber National Mission Force, “describes the tactics, techniques and procedures (TTPs) used by North Korean advanced persistent threat (APT) group Kimsuky—against worldwide targets—to gain intelligence on various topics of interest to the North Korean government.”
The key findings of the government on Kimsuky’s activities include:
The methods used by Kimsuky include social engineering and spearphishing, which are outlined in the Alert and are worth reviewing. After obtaining access, Kimsuky uses BabyShark Malware, PowerShell or the Windows Command Shell to execute the malware.
The Alert lists the indicators of compromise, including domains that have been used by Kimsuky, which IT professionals may wish to consult.