Malicious CR4T C2 Beacon via TroubleShooter User-Agent (via proxy)

PremiumReviewedSigma · High · v1
Category
proxy
Author
HuntRule
Published
2026-06-06
Updated
2026-08-28

ATT&CK techniques

C2
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. Exfiltration

  13. Impact

What it detects

This rule detects outbound HTTP requests carrying the distinctive TroubleShooter User-Agent string which the CR4T implant of the DuneQuixote campaign uses when communicating with its command-and-control server.

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Malicious CR4T C2 Beacon via TroubleShooter User-Agent (via proxy)
Pivot detection · T1071.001 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.