WezRat Command and Control HTTP URI Pattern

PremiumReviewedSigma · High · v1
Category
proxy
Author
HuntRule
Published
2026-08-11
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 HTTP requests matching the WezRat command and control URI scheme including the distinctive wez Agent InsMch endpoint. The backdoor tasks and reads data through these fixed URI paths while spoofing a firefox user agent. Detecting the URI pattern reveals active command and control traffic.

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WezRat Command and Control HTTP URI Pattern
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.