Suspicious SOCKS Proxy Persistence via SystemBC PowerShell Run Key

ATT&CK techniques

Persistence → C2

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
- T1090Proxy
Exfiltration
Impact

What it detects

This rule detects a Run key persistence entry being written that points to a PowerShell SOCKS proxy script as used by the SystemBC component in the Gootloader intrusion to maintain a proxied channel and this matters because autorun entries launching PowerShell proxy scripts from staging folders are strong indicators of malware backed persistence and covert C2 tunneling.

Reporting behind it

Related detections9 linkedT1547.001 — drag to rearrange

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Suspicious HTA File Dropped into Startup Folder

Suspicious SOCKS Proxy Persistence via SystemBC PowerShell Run Key

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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