title: Execution via stordiag.exe
author: Austin Songer (@austinsonger)
date: 2021/10/21
description: Detects the use of stordiag.exe to execute schtasks.exe systeminfo.exe
    and fltmc.exe
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_2:
        ParentImage: '*\stordiag.exe'
    SELECTION_3:
        Image: '*\schtasks.exe'
    SELECTION_4:
        Image: '*\systeminfo.exe'
    SELECTION_5:
        Image: '*\fltmc.exe'
    SELECTION_6:
        ParentImage: c:\windows\system32\\*
    SELECTION_7:
        ParentImage: c:\windows\syswow64\\*
    condition: (SELECTION_1 and (SELECTION_2 and (SELECTION_3 or SELECTION_4 or SELECTION_5))
        and  not ((SELECTION_6 or SELECTION_7)))
falsepositives:
- Legitimate usage of stordiag.exe.
id: 961e0abb-1b1e-4c84-a453-aafe56ad0d34
level: high
logsource:
    category: process_creation
    product: windows
references:
- https://strontic.github.io/xcyclopedia/library/stordiag.exe-1F08FC87C373673944F6A7E8B18CD845.html
- https://twitter.com/eral4m/status/1451112385041911809
status: experimental
tags:
- attack.defense_evasion
- attack.t1218
yml_filename: process_creation_stordiag_execution.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation