
title: Fsutil Suspicious Invocation
author: Ecco, E.M. Anhaus, oscd.community
date: 2019/09/26
description: Detects suspicious parameters of fsutil (deleting USN journal, configuring
  it with small size, etc). Might be used by ransomwares during the attack (seen by
  NotPetya and others).
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    Image: '*\fsutil.exe'
  SELECTION_3:
    OriginalFileName: fsutil.exe
  SELECTION_4:
    CommandLine:
    - '*deletejournal*'
    - '*createjournal*'
  condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3) and SELECTION_4)
falsepositives:
- Admin activity
- Scripts and administrative tools used in the monitored environment
id: add64136-62e5-48ea-807e-88638d02df1e
level: high
logsource:
  category: process_creation
  product: windows
modified: 2019/11/11
references:
- https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil-usn
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070/T1070.md
- https://eqllib.readthedocs.io/en/latest/analytics/c91f422a-5214-4b17-8664-c5fcf115c0a2.html
status: experimental
tags:
- attack.defense_evasion
- attack.t1070
ruletype: SIGMA
