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Potential Secure File Deletion via SDelete Utility

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Potential Secure File Deletion via SDelete Utility

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Detects 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: query

Rule indices:

winlogbeat-*
logs-endpoint.events.*

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: 1

Added (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Investigation guide

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Verify process details such as command line and hash to confirm this activity legitimacy.

Rule query

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event.category:file AND event.type:change AND file.name:/.+A+\.AAA/

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: File Deletion
- ID: T1107
- Reference URL: https://attack.mitre.org/techniques/T1107/

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