Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 16:43:35 UTC Home > List all groups > List all tools > List all groups using tool HyperStack Tool: HyperStack Names HyperStack GoldenSky SilentMoon Turla SilentMoon BigBoss Cacao Category Malware Type Backdoor Description (Accenture) HyperStack, first observed in 2018, is one of several RPC backdoors Turla uses. A sample identified in September 2020 has updated functionality which appears to be inspired the RPC backdoors previously publicly disclosed by ESET and Symantec Researchers as well as with the Carbon backdoor. Based on these similarities, we assess with high confidence that HyperStack is a custom Turla backdoor. Information MITRE ATT&CK Malpedia Last change to this tool card: 30 December 2022 Download this tool card in JSON format All groups using tool HyperStack Changed Name Country Observed https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=f1280fc8-feb4-4480-ac03-2ce589fece0a Page 1 of 2 APT groups   Turla, Waterbug, Venomous Bear 1996-2024   1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=f1280fc8-feb4-4480-ac03-2ce589fece0a https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=f1280fc8-feb4-4480-ac03-2ce589fece0a Page 2 of 2