---
Name: Powershell.exe
Description: Powershell.exe is a a task-based command-line shell built on .NET.
Author: 'Everyone'
Created: 2024-04-03
Commands:
  - Command: powershell.exe -ep bypass -file c:\path\to\a\script.ps1
    Description: Set the execution policy to bypass and execute a PowerShell script without warning
    Usecase: Execute PowerShell cmdlets, .NET code, and just about anything else your heart desires
    Category: Execute
    Privileges: User
    MitreID: T1059.001
    OperatingSystem: Windows 7 and up
  - Command: powershell.exe -ep bypass -command "Invoke-AllTheThings..."
    Description: Set the execution policy to bypass and execute a PowerShell command
    Usecase: Execute PowerShell cmdlets, .NET code, and just about anything else your heart desires
    Category: Execute
    Privileges: User
    MitreID: T1059.001
    OperatingSystem: Windows 7 and up
  - Command: powershell.exe -ep bypass -ec IgBXAGUAIAA8ADMAIABMAE8ATABCAEEAUwAiAA==
    Description: Set the execution policy to bypass and execute a very malicious PowerShell encoded command
    Usecase: Execute PowerShell cmdlets, .NET code, and just about anything else your heart desires
    Category: Execute
    Privileges: User
    MitreID: T1059.001
    OperatingSystem: Windows 7 and up
Full_Path:
  - Path: '%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe'
  - Path: '%SystemRoot%\SysWOW64\WindowsPowerShell\v1.0\powershell.exe'
Detection:
  - Sigma: https://github.com/SigmaHQ/sigma/tree/71ae004b32bb3c7fb04714f8a051fc8e5edda68c/rules/windows/powershell
Resources:
  - Link: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_powershell_exe?view=powershell-5.1
  - Link: https://attack.mitre.org/techniques/T1059/001/
Acknowledgement:
  - Person: Everyone
    Handle: '@alltheoffensivecyberers'