Suspicious PowerShell Spawned by WScript With Hidden Bypass via PureLogs Loader (via process_creation)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the PureLogs phishing chain in which a malicious JavaScript file executed by wscript.exe spawns PowerShell with an execution policy bypass and a hidden window to run a dropped script from a temp folder. This parent child relationship between the script host and PowerShell is a strong loader signal. The staged script then hollows a .NET binary.

Reporting behind it

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Suspicious PowerShell Spawned by WScript With Hidden Bypass via PureLogs Loader (via process_creation)

Pivot detection · T1059.001 · 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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