Detection rules › Sigma
User Added To Admin Group Via Sysadminctl
Detects attempts to create and add an account to the admin group via "sysadminctl"
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 Sysadminctl
id: 652c098d-dc11-4ba6-8566-c20e89042f2b
related:
- id: 0c1ffcf9-efa9-436e-ab68-23a9496ebf5b
type: obsolete
status: test
description: Detects attempts to create and add an account to the admin group via "sysadminctl"
references:
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1078.003/T1078.003.md#atomic-test-3---create-local-account-with-admin-privileges-using-sysadminctl-utility---macos
- https://ss64.com/osx/sysadminctl.html
author: Sohan G (D4rkCiph3r)
date: 2023-03-19
tags:
- attack.persistence
- attack.initial-access
- attack.privilege-escalation
- attack.stealth
- attack.t1078.003
logsource:
category: process_creation
product: macos
detection:
selection:
# Creates and adds new user to admin group
Image|endswith: '/sysadminctl'
CommandLine|contains|all:
- ' -addUser '
- ' -admin '
condition: selection
falsepositives:
- Legitimate administration activities
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/sysadminctl'
CommandLine|contains|all:
- ' -addUser '
- ' -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 |
|