File Explorer Folder Opened Using Explorer Folder Shortcut Via Shell


Description

Detects the initial execution of "cmd.exe" which spawns "explorer.exe" with the appropriate command line arguments for opening the "My Computer" folder.

Query · sigma

selection:
  ParentImage|endswith:
  - \cmd.exe
  - \powershell.exe
  - \pwsh.exe
  Image|endswith: \explorer.exe
  CommandLine|contains: shell:mycomputerfolder
condition: selection

Known false positives

  • Unknown
Raw source File Explorer Folder Opened Using Explorer Folder Shortcut Via Shell · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: File Explorer Folder Opened Using Explorer Folder Shortcut Via Shell
id: c3d76afc-93df-461e-8e67-9b2bad3f2ac4
status: test
description: |
    Detects the initial execution of "cmd.exe" which spawns "explorer.exe" with the appropriate command line arguments for opening the "My Computer" folder.
author: '@Kostastsale'
references:
    - https://ss64.com/nt/shell.html
date: 2022-12-22
modified: 2024-08-23
tags:
    - attack.discovery
    - attack.t1135
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        ParentImage|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
        Image|endswith: '\explorer.exe'
        CommandLine|contains: 'shell:mycomputerfolder'
    condition: selection
falsepositives:
    - Unknown
level: high
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_explorer_folder_shortcut_via_shell_binary/info.yml

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