Possible Creation of PowerShell Module File (via file_event)

title: Possible Creation of PowerShell Module File (via file_event)
id: b746313e-6c51-5cc5-848e-051dfe17b799
status: stable
description: This rule detects the creation of a new PowerShell module ".psm1", ".psd1", ".dll", ".ps1", etc.
references:
    - Internal Research
    - https://learn.microsoft.com/en-us/powershell/scripting/developer/module/understanding-a-windows-powershell-module?view=powershell-7.3
author: Huntrule Team
date: 2026-06-13
tags:
    - attack.persistence
    - attack.t1546
logsource:
    category: file_event
    product: windows
detection:
    selection:
        Image|endswith:
            - '\powershell.exe'
            - '\pwsh.exe'
        TargetFilename|contains:
            - '\WindowsPowerShell\Modules\'
            - '\PowerShell\7\Modules\'
    condition: selection
falsepositives:
    - Unknown
level: low