Detection rules › Sigma
User Added To Admin Group Via DseditGroup
Detects attempts to create and/or add an account to the admin group, thus granting admin privileges.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1078.003 Valid Accounts: Local Accounts |
| Persistence | T1078.003 Valid Accounts: Local Accounts |
| Privilege Escalation | T1078.003 Valid Accounts: Local Accounts |
| Stealth | T1078.003 Valid Accounts: Local Accounts |
Event coverage
| Provider | Event | Title |
|---|---|---|
| ESF | exec | Process Execution (Notify) |
Rule body yaml
title: User Added To Admin Group Via DseditGroup
id: 5d0fdb62-f225-42fb-8402-3dfe64da468a
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
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 ' # edit operation
- ' -a ' # username
- ' -t user'
- 'admin' # Group name
condition: selection
falsepositives:
- Legitimate administration activities
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/dseditgroup'
CommandLine|contains|all:
- ' -o edit '
- ' -a '
- ' -t user'
- 'admin'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|