Potential Credential Access via Windows Utilities
Elastic Stack Serverless Security
Identifies the execution of known Windows utilities often abused to dump Local Security Authority Server Service (LSASS) memory or the Active Directory database (NTDS.dit) in preparation for credential access.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: high
Risk score: 73
Runs every: 5m
Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Credential Access
Version: 6
Rule authors:
- Elastic
Rule license: Elastic License v2
If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define event.ingested and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate event.ingested to @timestamp for this rule to work.
process where event.type in ("start", "process_started") and
/* update here with any new lolbas with dump capability */
(process.pe.original_file_name == "procdump" and process.args : "-ma") or
(process.name : "ProcessDump.exe" and not process.parent.executable regex~ """C:\\Program Files( \(x86\))?\\Cisco Systems\\.*""") or
(process.pe.original_file_name == "WriteMiniDump.exe" and not process.parent.executable regex~ """C:\\Program Files( \(x86\))?\\Steam\\.*""") or
(process.pe.original_file_name == "RUNDLL32.EXE" and (process.args : "MiniDump*" or process.command_line : "*comsvcs.dll*#24*")) or
(process.pe.original_file_name == "RdrLeakDiag.exe" and process.args : "/fullmemdmp") or
(process.pe.original_file_name == "SqlDumper.exe" and process.args : "0x01100*") or
(process.pe.original_file_name == "TTTracer.exe" and process.args : "-dumpFull" and process.args : "-attach") or
(process.pe.original_file_name == "ntdsutil.exe" and process.args : "create*full*") or
(process.pe.original_file_name == "diskshadow.exe" and process.args : "/s")
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/
Sub-technique:
- Name: NTDS
- ID: T1003.003
- Reference URL: https://attack.mitre.org/techniques/T1003/003/