Suspicious winrm.vbs LOLBAS Script Execution for Code Proxying

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.005Visual Basic
Persistence
Priv Esc
Defense Evasion
- T1216System Script Proxy Execution
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects cscript or wscript executing the built in winrm.vbs script, a living-off-the-land binary abused in the OnlyDcRatFans campaign to proxy execution of a DcRat payload retrieved from paste.ee. winrm.vbs is normally used interactively by administrators, so its invocation by a script host to run additional code indicates abuse.

Reporting behind it

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Suspicious System Reconnaissance via Windows Script Host

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Suspicious wscript Execution of MicrosoftEdgeUpdate VBS Masquerade

Suspicious winrm.vbs LOLBAS Script Execution for Code Proxying

Pivot detection · T1059.005 · 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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