IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Secure File Deletion via SDelete Utility
editPotential Secure File Deletion via SDelete Utility
editDetects file name patterns generated by the use of Sysinternals SDelete utility to securely delete a file via multiple file overwrite and rename operations.
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: 100 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
edit## Triage and analysis Verify process details such as command line and hash to confirm this activity legitimacy.
Rule query
editfile where event.type == "change" and file.name : "*AAA.AAA"
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 100 (8.5.0 release)
-
- Formatting only
- Version 8 (8.4.0 release)
-
- Formatting only
- Version 6 (8.2.0 release)
-
- Formatting only
- Version 5 (7.13.0 release)
-
- Formatting only
- Version 4 (7.12.0 release)
-
-
Updated query, changed from:
file where event.type == "change" and wildcard(file.name,"*AAA.AAA")
-
- Version 3 (7.11.2 release)
-
- Formatting only
- Version 2 (7.11.0 release)
-
-
Updated query, changed from:
event.category:file AND event.type:change AND file.name:/.+A+\.AAA/
-