Malicious DarkGate C2 Communication via Synapse User-Agent (via proxy)
- Category
- proxy
- Author
- HuntRule
- Published
- 2026-09-16
- Updated
- 2026-09-16
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 outbound HTTP traffic carrying the distinctive DarkGate command-and-control User-Agent string. DarkGate beacons identify themselves with a hardcoded Synapse user agent not used by legitimate browsers. Presence of this exact string is a high-confidence C2 indicator.
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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Also included
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