Elastic Security Detection Rules

Suspicious LSASS Access via MalSecLogon

Last updated 5 months ago on 2025-03-20
Created 3 years ago on 2022-06-29

About

Identifies suspicious access to LSASS handle from a call trace pointing to seclogon.dll and with a suspicious access rights value. This may indicate an attempt to leak an LSASS handle via abusing the Secondary Logon service in preparation for credential access.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Credential AccessData Source: SysmonLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

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

↳ OS Credential Dumping (T1003)(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

   /* seclogon service accessing lsass */
  winlog.event_data.CallTrace : "*seclogon.dll*" and process.name : "svchost.exe" and

   /* PROCESS_CREATE_PROCESS & PROCESS_DUP_HANDLE & PROCESS_QUERY_INFORMATION */
  winlog.event_data.GrantedAccess == "0x14c0"

Install detection rules in Elastic Security

Detect Suspicious LSASS Access via MalSecLogon 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).