IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Mimikatz Memssp Log File Detected

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Mimikatz Memssp Log File Detected

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Identifies the password log file from the default Mimikatz memssp module.

Rule type: eql

Rule indices:

winlogbeat-*
logs-endpoint.events.*
logs-windows.*

Severity: high

Risk score: 73

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
Credential Access

Version: 4 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.13.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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file where file.name : "mimilsa.log" and process.name : "lsass.exe"

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
Technique:
- Name: OS Credential Dumping
- ID: T1003
- Reference URL: https://attack.mitre.org/techniques/T1003/

Rule version history

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Version 4 (7.13.0 release)

Updated query, changed from:

event.category:file and file.name:mimilsa.log and
process.name:lsass.exe

Version 3 (7.12.0 release)

Formatting only

Version 2 (7.11.2 release)

Formatting only

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