title: Renamed PowerShell
author: Florian Roth, frack113
date: 2019/08/22
description: Detects the execution of a renamed PowerShell often used by attackers
    or malware
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_2:
        Description: Windows PowerShell*
    SELECTION_3:
        Description: pwsh*
    SELECTION_4:
        Company: Microsoft Corporation
    SELECTION_5:
        Image: '*\powershell.exe'
    SELECTION_6:
        Image: '*\powershell_ise.exe'
    SELECTION_7:
        Image: '*\pwsh.exe'
    condition: (SELECTION_1 and ((SELECTION_2 or SELECTION_3) and SELECTION_4) and  not
        ((SELECTION_5 or SELECTION_6 or SELECTION_7)))
falsepositives:
- Unknown
id: d178a2d7-129a-4ba4-8ee6-d6e1fecd5d20
level: critical
logsource:
    category: process_creation
    product: windows
modified: 2021/07/03
references:
- https://twitter.com/christophetd/status/1164506034720952320
status: experimental
tags:
- car.2013-05-009
- attack.defense_evasion
- attack.t1036
- attack.t1036.003
yml_filename: win_renamed_powershell.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation