Malicious Windows Defender Disable via Set-MpPreference

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

ATT&CK techniques

  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. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects Set-MpPreference being invoked to disable Microsoft Defender protection features which the Dark Pink APT uses to blind endpoint defenses before deploying its tooling. Turning off real time monitoring and scanning lets subsequent payloads run unimpeded. It is important because tampering with Defender is an early and deliberate defense evasion step.

Related detections9 linkedT1685 — drag to rearrange
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Suspicious Microsoft Defender Path Exclusion of User Directories (via process_creation)
Malicious Windows Defender Tampering via Set-MpPreference (via process_creation)
Malicious Container Runtime Tampering via chmod on runc (via process_creation)
In-Memory AMSI or ETW Bypass in PowerShell (via process_creation)
Malicious Microsoft Defender Critical Security Components Disabled - Command (via process_creation)
Malicious Microsoft Defender Service Deactivation Attempt - Command (via process_creation)
Malicious Wdigest Authentication Enabled - Reg via Command (via process_creation)
Malicious Windows Defender Disable via Set-MpPreference
Pivot detection · T1685 · 9 related

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