Malicious Defender Exclusion Added via Add-MpPreference (via process_creation)

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects use of the Add-MpPreference cmdlet to add a Microsoft Defender exclusion, observed as MetaStealer excluded executable files from scanning. Adding exclusions blinds the antivirus to malicious binaries in the excluded scope. This defence evasion clears the way for the infostealer to run and persist without detection.

Reporting behind it

Related detections9 linkedT1685 — drag to rearrange

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Malicious Defender Exclusion Added for User Profile Path

Suspicious Defender Protection Disabled via Set-MpPreference

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Malicious Defender Exclusion Added via Add-MpPreference (via process_creation)

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.

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