LSASS Memory Dump Creation
editLSASS Memory Dump Creation
editIdentifies the creation of a Local Security Authority Subsystem Service (lsass.exe) default memory dump. This may indicate a credential access attempt via trusted system utilities such as Task Manager (taskmgr.exe) and SQL Dumper (sqldumper.exe) or known pentesting tools such as Dumpert and AndrewSpecial.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5 minutes
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
Version: 100 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
editRule query
editfile where file.name : ("lsass*.dmp", "dumpert.dmp", "Andrew.dmp", "SQLDmpr*.mdmp", "Coredump.dmp") and not (process.executable : ("?:\\Program Files\\Microsoft SQL Server\\*\\Shared\\SqlDumper.exe", "?:\\Windows\\System32\\dllhost.exe") and file.path : ("?:\\Program Files\\Microsoft SQL Server\\*\\Shared\\ErrorDumps\\SQLDmpr*.mdmp", "?:\\*\\Reporting Services\\Logfiles\\SQLDmpr*.mdmp")) and not (process.executable : "?:\\WINDOWS\\system32\\WerFault.exe" and file.path : "?:\\Windows\\System32\\config\\systemprofile\\AppData\\Lo cal\\CrashDumps\\lsass.exe.*.dmp")
Threat mapping
editFramework: 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/
Rule version history
edit- Version 100 (8.5.0 release)
-
- Formatting only
- Version 11 (8.4.0 release)
-
-
Updated query, changed from:
file where file.name : ("lsass*.dmp", "dumpert.dmp", "Andrew.dmp", "SQLDmpr*.mdmp", "Coredump.dmp")
-
- Version 9 (8.3.0 release)
-
- Formatting only
- Version 7 (8.2.0 release)
-
- Formatting only
- Version 5 (7.16.0 release)
-
- Formatting only
- Version 4 (7.13.0 release)
-
-
Updated query, changed from:
event.category:file and file.name:(lsass.DMP or lsass*.dmp or dumpert.dmp or Andrew.dmp or SQLDmpr*.mdmp or Coredump.dmp)
-
- Version 3 (7.12.0 release)
-
- Formatting only
- Version 2 (7.11.2 release)
-
- Formatting only