User Added To Admin Group Via DseditGroup

calendar Oct 18, 2023 · attack.initial_access attack.privilege_escalation attack.t1078.003  ·
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Detects attempts to create and/or add an account to the admin group, thus granting admin privileges.

Sigma rule (View on GitHub)

 1title: User Added To Admin Group Via DseditGroup
 2id: 5d0fdb62-f225-42fb-8402-3dfe64da468a
 3status: experimental
 4description: Detects attempts to create and/or add an account to the admin group, thus granting admin privileges.
 5references:
 6    - 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
 7    - https://ss64.com/osx/dseditgroup.html
 8author: Sohan G (D4rkCiph3r)
 9date: 2023/08/22
10tags:
11    - attack.initial_access
12    - attack.privilege_escalation
13    - attack.t1078.003
14logsource:
15    category: process_creation
16    product: macos
17detection:
18    selection:
19        Image|endswith: '/dseditgroup'
20        CommandLine|contains|all:
21            - ' -o edit ' # edit operation
22            - ' -a ' # username
23            - ' -t user'
24            - 'admin' # Group name
25    condition: selection
26falsepositives:
27    - Legitimate administration activities
28level: medium

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