Detectionhightest

File Explorer Folder Opened Using Explorer Folder Shortcut Via Shell

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

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Launch
kostastsaleCreated Thu Dec 22Updated Fri Aug 23c3d76afc-93df-461e-8e67-9b2bad3f2ac4windows
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 Logic1 selector
detection:
    selection:
        ParentImage|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
        Image|endswith: '\explorer.exe'
        CommandLine|contains: 'shell:mycomputerfolder'
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

Testing & Validation

Regression Tests

by SigmaHQ Team
Positive Detection Testevtx

Microsoft-Windows-Sysmon

Rule Metadata
Rule ID
c3d76afc-93df-461e-8e67-9b2bad3f2ac4
Status
test
Level
high
Type
Detection
Created
Thu Dec 22
Modified
Fri Aug 23
Path
rules/windows/process_creation/proc_creation_win_explorer_folder_shortcut_via_shell_binary.yml
Raw Tags
attack.discoveryattack.t1135
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