Suspicious autorun registry modification via WMI wmic spawning reg.exe on Windows

Flags WMIC-driven reg.exe commands that add Run key autorun entries, especially when pointing to suspicious temp/user locations.

FreeReviewedSigma · High · v2
Product
windows
Category
process_creation
Author
Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2025-02-17
Updated
2026-07-31
title: Suspicious autorun registry modification via WMI wmic spawning reg.exe on Windows
id: 174de910-e759-4513-a68c-5d73ce894596
status: experimental
description: This rule flags process creation events where wmic.exe (parented by wmiprvse.exe) is used to invoke reg.exe to add an autorun entry under Windows Run keys in HKCU or related locations, consistent with persistence attempts. It further constrains matches to command lines referencing common suspicious file path patterns typical of dropped or temporary executables. The detection relies on Windows process creation telemetry, including Image, ParentImage, OriginalFileName, and CommandLine.
references:
  - Internal Research
  - https://github.com/HackTricks-wiki/hacktricks/blob/e4c7b21b8f36c97c35b7c622732b38a189ce18f7/src/windows-hardening/windows-local-privilege-escalation/privilege-escalation-with-autorun-binaries.md
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_autorun_registry_modified_via_wmic.yml
author: Swachchhanda Shrawan Poudel (Nextron Systems), Huntrule Team
date: 2025-02-17
tags:
  - attack.privilege-escalation
  - attack.execution
  - attack.persistence
  - attack.t1547.001
  - attack.t1047
logsource:
  category: process_creation
  product: windows
detection:
  selection_execution_img:
    - Image|endswith: \wmic.exe
    - OriginalFileName: wmic.exe
    - ParentImage|endswith: \wmiprvse.exe
  selection_execution_cmd:
    CommandLine|contains|all:
      - reg
      - " add "
    CommandLine|contains:
      - \Software\Microsoft\Windows\CurrentVersion\Run
      - \Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run
      - \Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
  selection_suspicious_paths_1:
    CommandLine|contains:
      - :\Perflogs
      - :\ProgramData'
      - :\Windows\Temp
      - :\Temp
      - \AppData\Local\Temp
      - \AppData\Roaming
      - :\$Recycle.bin
      - :\Users\Default
      - :\Users\public
      - "%temp%"
      - "%tmp%"
      - "%Public%"
      - "%AppData%"
  selection_suspicious_paths_user_1:
    CommandLine|contains: :\Users\
  selection_suspicious_paths_user_2:
    CommandLine|contains:
      - \Favorites
      - \Favourites
      - \Contacts
      - \Music
      - \Pictures
      - \Documents
      - \Photos
  condition: all of selection_execution_* and (selection_suspicious_paths_1 or (all of selection_suspicious_paths_user_*))
falsepositives:
  - Legitimate administrative activity or software installations
level: high
license: DRL-1.1
related:
  - id: c80e66d8-1780-48a9-b412-46663fd21ac0
    type: derived