IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Delete Volume USN Journal with Fsutil
editDelete Volume USN Journal with Fsutil
editIdentifies use of the fsutil.exe to delete the volume USNJRNL. This technique is used by attackers to eliminate evidence of files created during post-exploitation activities.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: low
Risk score: 21
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 10 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 8.2.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type in ("start", "process_started") and (process.name : "fsutil.exe" or process.pe.original_file_name == "fsutil.exe") and process.args : "deletejournal" and process.args : "usn"
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Indicator Removal on Host
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
Rule version history
edit- Version 10 (8.2.0 release)
-
- Formatting only
- Version 9 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:(start or process_started) and process.name:fsutil.exe and process.args:(deletejournal and usn)
-
- Version 8 (7.12.0 release)
-
- Formatting only
- Version 7 (7.11.2 release)
-
- Formatting only
- Version 6 (7.11.0 release)
-
- Formatting only
- Version 5 (7.10.0 release)
-
- Formatting only
- Version 4 (7.9.1 release)
-
- Formatting only
- Version 3 (7.9.0 release)
-
-
Updated query, changed from:
event.action:"Process Create (rule: ProcessCreate)" and process.name:fsutil.exe and process.args:(deletejournal and usn)
-
- Version 2 (7.7.0 release)
-
-
Updated query, changed from:
event.action:"Process Create (rule: ProcessCreate)" and process.name:"fsutil.exe" and process.args:("usn" and "deletejournal")
-