Possible FDMTP Implant C2 Cluster Registration via HTTP (via proxy)
- Category
- proxy
- Author
- HuntRule
- Published
- 2026-09-25
- Updated
- 2026-09-25
ATT&CK techniques
C2Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
Exfiltration
Impact
What it detects
This rule detects the QuickFox FDMTP implant contacting its command and control cluster using a distinctive registration request. The implant issues a GetCluster request carrying the DotNet-TcpFDMTP protocol tag to obtain live C2 nodes. This URI pattern is unique to the FDMTP framework.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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