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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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

LSASS Memory Dump Creation

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LSASS Memory Dump Creation

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Identifies the creation of a Local Security Authority Subsystem Service (lsass.exe) default memory dump. This may indicate a credential access attempt via trusted system utilities such as Task Manager (taskmgr.exe) and SQL Dumper (sqldumper.exe) or known pentesting tools such as Dumpert and AndrewSpecial.

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

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Credential Access

Version: 7 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 8.2.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

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## 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

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file where file.name : ("lsass*.dmp", "dumpert.dmp", "Andrew.dmp",
"SQLDmpr*.mdmp", "Coredump.dmp")

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 7 (8.2.0 release)
  • Formatting only
Version 5 (7.16.0 release)
  • Formatting only
Version 4 (7.13.0 release)

  • Updated query, changed from:

    event.category:file and file.name:(lsass.DMP or lsass*.dmp or
dumpert.dmp or Andrew.dmp or SQLDmpr*.mdmp or Coredump.dmp)
Version 3 (7.12.0 release)
  • Formatting only
Version 2 (7.11.2 release)
  • Formatting only
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