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 Process Access
editSuspicious Lsass Process Access
editIdentifies access attempts to LSASS handle, this may indicate an attempt to dump credentials from Lsass memory.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-windows.*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Credential Access
- Data Source: Sysmon Only
Version: 106
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where host.os.type == "windows" and event.code == "10" and winlog.event_data.TargetImage : "?:\\WINDOWS\\system32\\lsass.exe" and not winlog.event_data.GrantedAccess : ("0x1000", "0x1400", "0x101400", "0x101000", "0x101001", "0x100000", "0x100040", "0x3200", "0x40", "0x3200") and not process.name : ("procexp64.exe", "procmon.exe", "procexp.exe", "Microsoft.Identity.AadConnect.Health.AadSync.Host.ex") and not process.executable : ( "?:\\ProgramData\\Microsoft\\Windows Defender\\platform\\*", "?:\\ProgramData\\WebEx\\webex\\*", "?:\\Program Files (x86)\\*", "?:\\Program Files\\*", "?:\\Windows\\CCM\\CcmExec.exe", "?:\\Windows\\LTSvc\\LTSVC.exe", "?:\\Windows\\Sysmon.exe", "?:\\Windows\\Sysmon64.exe", "?:\\Windows\\system32\\csrss.exe", "?:\\Windows\\System32\\lsm.exe", "?:\\Windows\\system32\\MRT.exe", "?:\\Windows\\System32\\msiexec.exe", "?:\\Windows\\system32\\wbem\\wmiprvse.exe", "?:\\Windows\\system32\\wininit.exe", "?:\\Windows\\SystemTemp\\GUM*.tmp\\GoogleUpdate.exe", "?:\\Windows\\sysWOW64\\wbem\\wmiprvse.exe" ) and not winlog.event_data.CallTrace : ("*mpengine.dll*", "*appresolver.dll*", "*sysmain.dll*")
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/