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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.*
- endgame-*
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
- Elastic Endgame
Version: 101 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 8.6.0
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 101 (8.6.0 release)
-
- Formatting only
- 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/
-