New User Created Via Net.EXE

calendar Feb 12, 2024 · attack.persistence attack.t1136.001  ·
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Identifies the creation of local users via the net.exe command.

Sigma rule (View on GitHub)

 1title: New User Created Via Net.EXE
 2id: cd219ff3-fa99-45d4-8380-a7d15116c6dc
 3related:
 4    - id: b9f0e6f5-09b4-4358-bae4-08408705bd5c
 5      type: similar
 6status: test
 7description: Identifies the creation of local users via the net.exe command.
 8references:
 9    - https://eqllib.readthedocs.io/en/latest/analytics/014c3f51-89c6-40f1-ac9c-5688f26090ab.html
10    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1136.001/T1136.001.md
11author: Endgame, JHasenbusch (adapted to Sigma for oscd.community)
12date: 2018/10/30
13modified: 2023/02/21
14tags:
15    - attack.persistence
16    - attack.t1136.001
17logsource:
18    category: process_creation
19    product: windows
20detection:
21    selection_img:
22        - Image|endswith:
23              - '\net.exe'
24              - '\net1.exe'
25        - OriginalFileName:
26              - 'net.exe'
27              - 'net1.exe'
28    selection_cli:
29        CommandLine|contains|all:
30            - 'user'
31            - 'add'
32    condition: all of selection_*
33falsepositives:
34    - Legitimate user creation.
35    - Better use event IDs for user creation rather than command line rules.
36level: medium

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