Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 15:29:25 UTC Home > List all groups > List all tools > List all groups using tool COLDCAT Tool: COLDCAT Names COLDCAT Category Malware Type Downloader Description (Mandiant) COLDCAT is a complex downloader. COLDCAT generates unique host identifier information, and beacons it to a C2 that is specified in a separate file via POST request with the data in the cookie header. After a brief handshake, the malware expects base64 encoded shellcode to execute in response. Information Last change to this tool card: 26 April 2023 Download this tool card in JSON format All groups using tool COLDCAT Changed Name Country Observed APT groups   Lazarus Group, Hidden Cobra, Labyrinth Chollima 2007-May 2025 1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=e00ea69d-da41-4489-9936-0e892e128cfc https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=e00ea69d-da41-4489-9936-0e892e128cfc Page 1 of 1