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