Suspicious Wscript Executing UN VBS Cleanup Script via Command Line (via process_creation)

ATT&CK techniques

Execution

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

What it detects

This rule detects wscript.exe executing a VBScript named UN.vbs, the cleanup component used by the Parallax RAT to remove infection artifacts. It is associated with the Parallax RAT campaign reported by Uptycs. Attackers run this script to erase traces after establishing access, so the execution is a useful indicator of post-infection cleanup activity.

Reporting behind it

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Suspicious Wscript Executing UN VBS Cleanup Script via Command Line (via process_creation)

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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