Sigma rule: Renamed NirCmd.EXE Execution

Rule

Title

Renamed NirCmd.EXE Execution

Status

test

Level

high

Author

X__Junior (Nextron Systems)

Date

2024-03-11

File

rules/windows/process_creation/proc_creation_win_renamed_nircmd.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

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

Log source

product

windows

category

process_creation

Detection

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

False positives (as the rule lists them)

• Unknown

Tags

• attack.execution
• attack.stealth
• attack.t1059
• attack.t1202

MITRE ATT&CK ids this rule names

• T1059
• T1202

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

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_renamed_nircmd.yml