IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Credential Access via LSASS Memory Dump
editPotential Credential Access via LSASS Memory Dump
editIdentifies suspicious access to LSASS handle from a call trace pointing to DBGHelp.dll or DBGCore.dll, which both export the MiniDumpWriteDump method that can be used to dump LSASS memory content in preparation for credential access.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5m
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: 6
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editprocess where event.code == "10" and
winlog.event_data.TargetImage : "?:\\WINDOWS\\system32\\lsass.exe" and
/* DLLs exporting MiniDumpWriteDump API to create an lsass mdmp*/
winlog.event_data.CallTrace : ("*dbghelp*", "*dbgcore*") and
/* case of lsass crashing */
not process.executable : ("?:\\Windows\\System32\\WerFault.exe", "?:\\Windows\\System32\\WerFaultSecure.exe")
Framework: MITRE ATT&CKTM
-
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/
-
Sub-technique:
- Name: LSASS Memory
- ID: T1003.001
- Reference URL: https://attack.mitre.org/techniques/T1003/001/