title: Setuid and Setgid
id: c21c4eaa-ba2e-419a-92b2-8371703cbe21
description: Detects suspicious change of file privileges with chown and chmod commands
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1166/T1166.md
    - https://attack.mitre.org/techniques/T1166/
author: Ömer Günal
date: 2020/06/16
tags:
    - attack.persistence
    - attack.t1169
level: medium
logsource:
    product: linux
detection:
    selection1:
        - 'sudo chown root *'    
    selection2:
        - 'sudo chmod u+s *'
    selection3:
        - 'sudo chmod g+s *'
    condition: (selection1 and selection2) or (selection1 and selection3)
falsepositives:
    - Legal activities
level: medium