Powershell LocalAccount Manipulation

Adversaries may manipulate accounts to maintain access to victim systems. Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups

Sigma rule (View on GitHub)

 1title: Powershell LocalAccount Manipulation
 2id: 4fdc44df-bfe9-4fcc-b041-68f5a2d3031c
 3status: test
 4description: |
 5    Adversaries may manipulate accounts to maintain access to victim systems.
 6    Account manipulation may consist of any action that preserves adversary access to a compromised account, such as modifying credentials or permission groups    
 7references:
 8    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1098/T1098.md#atomic-test-1---admin-account-manipulate
 9    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.localaccounts/?view=powershell-5.1
10author: frack113
11date: 2021/12/28
12tags:
13    - attack.persistence
14    - attack.t1098
15logsource:
16    product: windows
17    category: ps_script
18    definition: 'Requirements: Script Block Logging must be enabled'
19detection:
20    selection:
21        ScriptBlockText|contains:
22            - 'Disable-LocalUser'
23            - 'Enable-LocalUser'
24            - 'Get-LocalUser'
25            - 'Set-LocalUser'
26            - 'New-LocalUser'
27            - 'Rename-LocalUser'
28            - 'Remove-LocalUser'
29    condition: selection
30falsepositives:
31    - Legitimate administrative script
32level: medium

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