New User Created Via Net.EXE With Never Expire Option

 1title: New User Created Via Net.EXE With Never Expire Option
 2id: b9f0e6f5-09b4-4358-bae4-08408705bd5c
 3related:
 4    - id: cd219ff3-fa99-45d4-8380-a7d15116c6dc
 5      type: derived
 6status: test
 7description: Detects creation of local users via the net.exe command with the option "never expire"
 8references:
 9    - https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/
10author: Nasreddine Bencherchali (Nextron Systems)
11date: 2022-07-12
12modified: 2023-02-21
13tags:
14    - attack.persistence
15    - attack.t1136.001
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection_img:
21        - Image|endswith:
22              - '\net.exe'
23              - '\net1.exe'
24        - OriginalFileName:
25              - 'net.exe'
26              - 'net1.exe'
27    selection_cli:
28        CommandLine|contains|all:
29            - 'user'
30            - 'add'
31            - 'expires:never'
32    condition: all of selection_*
33falsepositives:
34    - Unlikely
35level: high