Renamed NirCmd.EXE Execution

Title: Renamed NirCmd.EXE Execution
Status: test
Description:Detects the execution of a renamed "NirCmd.exe" binary based on the PE metadata fields.
References:
  -https://www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/
  -https://www.nirsoft.net/utils/nircmd.html
Author: X__Junior (Nextron Systems)
Date: 2024-03-11
modified:None
Tags:

• -'attack.execution'
• -'attack.stealth'
• -'attack.t1059'
• -'attack.t1202'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection:
    OriginalFileName: 'NirCmd.exe'
  filter_main_img:
    Image|endswith:
      -'\nircmd.exe'
      -'\nircmdc.exe'

  condition:selection and not 1 of filter_main_*
Falsepositives:
  -Unknown
Level: high