Threat Group Cards: A Threat Actor Encyclopedia
Archived: 2026-04-06 03:19:40 UTC
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 Tool: Danfuan
Names Danfuan
Category Malware
Type Backdoor
Description
(Symantec) This is a previously unseen malware. It is a DynamicCodeCompiler that compiles
and executes received C# code. It appears to be based on .NET dynamic compilation
technology. This type of dynamically compiled code is not created on disk but exists in
memory. It acts as a backdoor on infected systems.
Information
<https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/cranefly-new-tools-technique-geppei-danfuan>
Last change to this tool card: 18 November 2022
Download this tool card in JSON format
All groups using tool Danfuan
Changed Name Country Observed
APT groups
  APT 29, Cozy Bear, The Dukes 2008-Feb 2025
1 group listed (1 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=00ba8b1e-f80f-4677-8665-44be9497f9ed
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=00ba8b1e-f80f-4677-8665-44be9497f9ed
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