Rule Content
- title: Fsutil suspicious invocation
id: add64136-62e5-48ea-807e-88638d02df1e
description: Detects suspicious parameters of fsutil (deleting USN journal, configuring
it with small size..). Might be used by ransomwares during the attack (seen by
NotPetya and others)
author: Ecco
date: 2019/09/26
level: high
references:
- https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil-usn
logsource:
category: process_creation
product: windows
service: null
detection:
binary_1:
Image: '*\fsutil.exe'
binary_2:
OriginalFileName: fsutil.exe
selection:
CommandLine:
- '* deletejournal *'
- '* createjournal *'
condition: (1 of binary_*) and selection
falsepositives:
- Admin activity
- Scripts and administrative tools used in the monitored environment