Suspicious Desktop Window Manager Spawning Shutdown Utility via Process Creation

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-07-26
Updated
2026-08-28

ATT&CK techniques

Priv Esc
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects the Desktop Window Manager process dwm launching the shutdown utility which is an anomalous chain observed in an in the wild Windows local privilege escalation exploit that injected shellcode into dwm and invoked shutdown to trigger a DLL hijack against LogonUI. The genuine dwm process does not spawn shutdown so this relationship indicates exploitation.

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