Threat Group Cards: A Threat Actor Encyclopedia Archived: 2026-04-05 18:54:55 UTC Home > List all groups > List all tools > List all groups using tool Stubbedoor Tool: Stubbedoor Names Stubbedoor Category Malware Type Loader, Backdoor Description (Bitdefender) The main capability of the Stubbedoor is to receive from the C2 encrypted .NET assembly, to load them and invoke its Main function. Information Last change to this tool card: 18 June 2024 Download this tool card in JSON format All groups using tool Stubbedoor Changed Name Country Observed APT groups   Unfading Sea Haze 2018   1 group listed (1 APT, 0 other, 0 unknown) Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=c6188eea-57fc-406e-83be-5d1dd8644c43 https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=c6188eea-57fc-406e-83be-5d1dd8644c43 Page 1 of 1