SigmaHQ/rules/windows/process_creation/win_susp_msiexec_cwd.yml

title: Suspicious MsiExec Directory
id: e22a6eb2-f8a5-44b5-8b44-a2dbd47b1144
status: experimental
description: Detects suspicious msiexec process starts in an uncommon directory
references:
    - https://twitter.com/200_okay_/status/1194765831911215104
tags:
    - attack.defense_evasion
    - attack.t1036.005
    - attack.t1036      # an old one
author: Florian Roth
date: 2019/11/14
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\msiexec.exe'
    filter:
        Image|startswith: 
            - 'C:\Windows\System32\'
            - 'C:\Windows\SysWOW64\'
            - 'C:\Windows\WinSxS\' 
    condition: selection and not filter
falsepositives:
    - Unknown
level: high