User Added To Admin Group Via DseditGroup

Title: User Added To Admin Group Via DseditGroup
Status: test
Description:Detects attempts to create and/or add an account to the admin group, thus granting admin privileges.
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1078.003/T1078.003.md#atomic-test-5---add-a-newexisting-user-to-the-admin-group-using-dseditgroup-utility---macos
  -https://ss64.com/osx/dseditgroup.html
Author: Sohan G (D4rkCiph3r)
Date: 2023-08-22
modified:None
Tags:

• -'attack.persistence'
• -'attack.initial-access'
• -'attack.privilege-escalation'
• -'attack.stealth'
• -'attack.t1078.003'

Logsource:

• category: process_creation
• product: macos

Detection:
  selection:
    Image|endswith: '/dseditgroup'
    CommandLine|contains|all:
      -' -o edit '
      -' -a '
      -' -t user'
      -'admin'

  condition:selection
Falsepositives:
  -Legitimate administration activities
Level: medium