Potential Credential Access via LSASS Memory Dump

Last updated 5 months ago on 2025-03-20
Created 4 years ago on 2021-10-07

About

Identifies 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.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Credential AccessTactic:ExecutionData Source: SysmonLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Credential Access (TA0006)(opens in a new tab or window)

Execution (TA0002)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
winlogbeat-*logs-windows.sysmon_operational-*
Related Integrations

windows(opens in a new tab or window)

Query
process where host.os.type == "windows" and 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\\SysWOW64\\WerFault.exe",
        "?:\\Windows\\System32\\WerFaultSecure.exe"
      )

Install detection rules in Elastic Security

Detect Potential Credential Access via LSASS Memory Dump in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).