IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious LSASS Access via MalSecLogon
editSuspicious LSASS Access via MalSecLogon
editIdentifies 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.
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
- Sysmon Only
Version: 101
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 /* 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"
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/