sigmalowHunting

PowerShell Module File Created

Detects the creation of a new PowerShell module ".psm1", ".psd1", ".dll", ".ps1", etc.

Detection Query

selection:
  Image|endswith:
    - \powershell.exe
    - \pwsh.exe
  TargetFilename|contains:
    - \WindowsPowerShell\Modules\
    - \PowerShell\7\Modules\
condition: selection

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2023-05-09

Data Sources

windowsFile Events

Platforms

windows

References

Tags

attack.persistence

Raw Content

title: PowerShell Module File Created
id: e36941d0-c0f0-443f-bc6f-cb2952eb69ea
status: test
description: 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: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-09
tags:
    - attack.persistence
logsource:
    category: file_event
    product: windows
detection:
    selection:
        Image|endswith:
            - '\powershell.exe'
            - '\pwsh.exe'
        TargetFilename|contains:
            - '\WindowsPowerShell\Modules\'
            - '\PowerShell\7\Modules\'
    condition: selection
falsepositives:
    - Likely
level: low