Detectionhightest
Renamed NirCmd.EXE Execution
Detects the execution of a renamed "NirCmd.exe" binary based on the PE metadata fields.
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Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic2 selectors
detection:
selection:
OriginalFileName: 'NirCmd.exe'
filter_main_img:
Image|endswith:
- '\nircmd.exe'
- '\nircmdc.exe'
condition: selection and not 1 of filter_main_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Rule Metadata
Rule ID
264982dc-dbad-4dce-b707-1e0d3e0f73d9
Status
test
Level
high
Type
Detection
Created
Mon Mar 11
Path
rules/windows/process_creation/proc_creation_win_renamed_nircmd.yml
Raw Tags
attack.executionattack.t1059attack.defense-evasionattack.t1202