New User Created Via Net.EXE With Never Expire Option

Title: New User Created Via Net.EXE With Never Expire Option
Status: test
Description:Detects creation of local users via the net.exe command with the option "never expire"
References:
  -https://thedfirreport.com/2022/07/11/select-xmrig-from-sqlserver/
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2022-07-12
modified:2023-02-21
Tags:

• -'attack.persistence'
• -'attack.t1136.001'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_img:
    - Image|endswith:
      - '\net.exe'
      - '\net1.exe'
    - OriginalFileName:
      - 'net.exe'
      - 'net1.exe'
  selection_cli:
    CommandLine|contains|all:
      -'user'
      -'add'
      -'expires:never'

  condition:all of selection_*
Falsepositives:
  -Unlikely
Level: high