Suspicious WScript Execution of win64 VBS Loader via Proton66 XWorm Campaign (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 the Windows Script Host running the win64 vbs loader used in a Proton66 hosted campaign to download and execute a Base64 encoded DLL and the XWorm binary.

Reporting behind it

Related detections9 linkedT1059.005 — drag to rearrange

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Suspicious System Reconnaissance via Windows Script Host

Suspicious WScript Execution of win64 VBS Loader via Proton66 XWorm Campaign (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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