UtilityFunctions.ps1 Proxy Dll

Description

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

Query · sigma

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

Known false positives

  • Unknown
Raw source UtilityFunctions.ps1 Proxy Dll · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: UtilityFunctions.ps1 Proxy Dll
id: 0403d67d-6227-4ea8-8145-4e72db7da120
status: test
description: Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.
references:
    - https://lolbas-project.github.io/lolbas/Scripts/UtilityFunctions/
author: frack113
date: 2022-05-28
tags:
    - attack.stealth
    - attack.t1216
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - 'UtilityFunctions.ps1'
            - 'RegSnapin '
    condition: selection
falsepositives:
    - Unknown
level: medium

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