IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

« LSASS Memory Dump Handle Access Mimikatz Memssp Log File Detected »

› ›

LSASS Process Access via Windows API

edit

LSASS Process Access via Windows API

edit

Identifies access attempts to the LSASS handle, which may indicate an attempt to dump credentials from LSASS memory.

Rule type: eql

Rule indices:

logs-endpoint.events.*

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:

https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1003.001/T1003.001.md

Tags:

Domain: Endpoint
OS: Windows
Use Case: Threat Detection
Tactic: Credential Access
Tactic: Execution
Data Source: Elastic Defend

Version: 5

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

api where host.os.type == "windows" and
  process.Ext.api.name in ("OpenProcess", "OpenThread") and Target.process.name : "lsass.exe" and
  not
  (
    process.executable : (
        "?:\\ProgramData\\GetSupportService*\\Updates\\Update_*.exe",
        "?:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\*\\MsMpEng.exe",
        "?:\\Program Files (x86)\\Asiainfo Security\\OfficeScan Client\\NTRTScan.exe",
        "?:\\Program Files (x86)\\Blackpoint\\SnapAgent\\SnapAgent.exe",
        "?:\\Program Files (x86)\\eScan\\reload.exe",
        "?:\\Program Files (x86)\\Google\\Update\\GoogleUpdate.exe",
        "?:\\Program Files (x86)\\Kaspersky Lab\\*\\avp.exe",
        "?:\\Program Files (x86)\\N-able Technologies\\Reactive\\bin\\NableReactiveManagement.exe",
        "?:\\Program Files (x86)\\N-able Technologies\\Windows Agent\\bin\\agent.exe",
        "?:\\Program Files (x86)\\Trend Micro\\*\\CCSF\\TmCCSF.exe",
        "?:\\Program Files*\\Windows Defender\\MsMpEng.exe",
        "?:\\Program Files\\Bitdefender\\Endpoint Security\\EPSecurityService.exe",
        "?:\\Program Files\\Cisco\\AMP\\*\\sfc.exe",
        "?:\\Program Files\\Common Files\\McAfee\\AVSolution\\mcshield.exe",
        "?:\\Program Files\\EA\\AC\\EAAntiCheat.GameService.exe",
        "?:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-*\\components\\metricbeat.exe",
        "?:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-*\\components\\osqueryd.exe",
        "?:\\Program Files\\Elastic\\Agent\\data\\elastic-agent-*\\components\\packetbeat.exe",
        "?:\\Program Files\\ESET\\ESET Security\\ekrn.exe",
        "?:\\Program Files\\Fortinet\\FortiClient\\FortiProxy.exe",
        "?:\\Program Files\\Huntress\\HuntressAgent.exe",
        "?:\\Program Files\\LogicMonitor\\Agent\\bin\\sbshutdown.exe",
        "?:\\Program Files\\Microsoft Security Client\\MsMpEng.exe",
        "?:\\Program Files\\Qualys\\QualysAgent\\QualysAgent.exe",
        "?:\\Program Files\\TDAgent\\ossec-agent\\ossec-agent.exe",
        "?:\\Program Files\\Topaz OFD\\Warsaw\\core.exe",
        "?:\\Program Files\\VMware\\VMware Tools\\vmtoolsd.exe",
        "?:\\Windows\\AdminArsenal\\PDQDeployRunner\\*\\exec\\Sysmon64.exe",
        "?:\\Windows\\Sysmon.exe",
        "?:\\Windows\\Sysmon64.exe",
        "?:\\Windows\\System32\\csrss.exe",
        "?:\\Windows\\System32\\MRT.exe",
        "?:\\Windows\\System32\\msiexec.exe",
        "?:\\Windows\\System32\\RtkAudUService64.exe",
        "?:\\Windows\\System32\\wbem\\WmiPrvSE.exe",
        "?:\\Windows\\SysWOW64\\wbem\\WmiPrvSE.exe"
    ) and process.code_signature.trusted == true
  )

Framework: MITRE ATT&CK^TM

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/
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
Technique:
- Name: Native API
- ID: T1106
- Reference URL: https://attack.mitre.org/techniques/T1106/

« LSASS Memory Dump Handle Access Mimikatz Memssp Log File Detected »