sigmahighHunting

Renamed NirCmd.EXE Execution

Detects the execution of a renamed "NirCmd.exe" binary based on the PE metadata fields.

MITRE ATT&CK

executiondefense-evasion

Detection Query

selection:
  OriginalFileName: NirCmd.exe
filter_main_img:
  Image|endswith:
    - \nircmd.exe
    - \nircmdc.exe
condition: selection and not 1 of filter_main_*

Author

X__Junior (Nextron Systems)

Created

2024-03-11

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.executionattack.t1059attack.defense-evasionattack.t1202

Raw Content

title: Renamed NirCmd.EXE Execution
id: 264982dc-dbad-4dce-b707-1e0d3e0f73d9
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
tags:
    - attack.execution
    - attack.t1059
    - attack.defense-evasion
    - 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