Detectionmediumtest

UtilityFunctions.ps1 Proxy Dll

Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

François HubautCreated Sat May 280403d67d-6227-4ea8-8145-4e72db7da120windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection:
        CommandLine|contains:
            - 'UtilityFunctions.ps1'
            - 'RegSnapin '
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

Techniques

Rule Metadata

Rule ID

0403d67d-6227-4ea8-8145-4e72db7da120

Status

test

Level

medium

Type

Detection

Created

Sat May 28

Author

Path

rules/windows/process_creation/proc_creation_win_lolbin_utilityfunctions.yml

Raw Tags

attack.defense-evasionattack.t1216