Possible UAC Bypass via ComputerDefaults Execution

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-31
Updated
2026-10-31

ATT&CK techniques

Priv Esc → Defense Evasion
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects ComputerDefaults.exe spawning a command interpreter or script host child process. WarzoneRAT abuses ComputerDefaults.exe together with a hijacked ms-settings registry handler to bypass User Account Control. Successful abuse grants the malware elevated privileges without a consent prompt.

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Malicious UAC Bypass via explorer.exe NOUACCHECK Argument
Suspicious UAC Bypass via ms-settings Shell Command Hijack (via registry_set)
Possible UAC Bypass via ComputerDefaults Execution
Pivot detection · T1548.002 · 9 related

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