Sigma rule: Execution via stordiag.exe

Rule

Title

Execution via stordiag.exe

Status

test

Level

high

Author

Austin Songer (@austinsonger)

Date

2021-10-21

Modified

2022-12-25

File

rules/windows/process_creation/proc_creation_win_stordiag_susp_child_process.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the use of stordiag.exe to execute schtasks.exe systeminfo.exe and fltmc.exe

Log source

product

windows

category

process_creation

Detection

selection:
    ParentImage|endswith: '\stordiag.exe'
    Image|endswith:
        - '\schtasks.exe'
        - '\systeminfo.exe'
        - '\fltmc.exe'
filter:
    ParentImage|startswith: # as first is "Copy c:\windows\system32\stordiag.exe to a folder"
        - 'c:\windows\system32\'
        - 'c:\windows\syswow64\'
condition: selection and not filter

False positives (as the rule lists them)

• Legitimate usage of stordiag.exe.

Tags

• attack.stealth
• attack.t1218

MITRE ATT&CK ids this rule names

• T1218

References

• https://strontic.github.io/xcyclopedia/library/stordiag.exe-1F08FC87C373673944F6A7E8B18CD845.html
• https://twitter.com/eral4m/status/1451112385041911809

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_stordiag_susp_child_process.yml