Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-06 00:12:10 UTC Home > List all groups > List all tools > List all groups using tool Downdelph Tool: Downdelph Names Downdelph Delphacy Category Malware Type Loader Description (ESET) Downdelph is a first-stage component deployed only in very rare cases by the Sednit operators. Over the past two years this low-profile approach has been combined with advanced persistence methods — a bootkit and a rootkit — probably in order to spy on special targets for long periods of time. Downdelph was used to deploy X-Agent and Sedreco on infected machines. Information MITRE ATT&CK Malpedia AlienVault OTX Last change to this tool card: 23 April 2020 Download this tool card in JSON format All groups using tool Downdelph Changed Name Country Observed APT groups Sofacy, APT 28, Fancy Bear, Sednit 2004-Apr 2025 1 group listed (1 APT, 0 other, 0 unknown) https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=d262019e-e4a6-467a-9cb7-1c52e4bb426c Page 1 of 2 Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=d262019e-e4a6-467a-9cb7-1c52e4bb426c https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=d262019e-e4a6-467a-9cb7-1c52e4bb426c Page 2 of 2