Suspicious Termination of Defender Tray Process via Taskkill

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 taskkill forcibly terminating the Microsoft Defender system tray process which the Trigona actor killed to weaken endpoint protection prior to deployment and this matters because forcibly stopping security UI processes is an established defense evasion step and has no legitimate operational reason on a managed host.

Reporting behind it

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Suspicious Termination of Defender Tray Process via Taskkill

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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