Malicious Run Key Persistence Named SystemAgentService

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1547.001Registry Run Keys / Startup Folder
Priv Esc
- T1547.001Registry Run Keys / Startup Folder
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a registry autorun value named SystemAgentService being written under the current user Run key. The Vidar stealer campaign creates this value to survive reboots while impersonating a Microsoft service name. Catching the run key write reveals user-level persistence established by the stealer loader.

Reporting behind it

Related detections9 linkedT1547.001 — drag to rearrange

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Malicious Run Key Persistence Named SystemAgentService

Pivot detection · T1547.001 · 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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