Malicious FIN7 Powertrash Loader Execution via Obfuscated PowerShell (via process_creation)

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
Persistence
Priv Esc
Defense Evasion
- T1027Obfuscated Files or Information
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the obfuscated PowerShell command line used by FIN7 to launch the Powertrash loader and stage its implants. The activity combines an execution policy bypass, a hidden window, and a non-interactive session, typically alongside an encoded payload. This flag combination is uncommon in benign automation.

Reporting behind it

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Obfuscated PowerShell Script: Indirect Cmdlet Execution via ExportedCommands Array Index

Suspicious PowerShell String Concatenation Obfuscation for Batch Extension via LNK (via process_creation)

Malicious FIN7 Powertrash Loader Execution via Obfuscated PowerShell (via process_creation)

Pivot detection · T1027 · 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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