IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Service Creation via Local Kerberos Authentication
editService Creation via Local Kerberos Authentication
editIdentifies a suspicious local successful logon event where the Logon Package is Kerberos, the remote address is set to localhost, followed by a sevice creation from the same LogonId. This may indicate an attempt to leverage a Kerberos relay attack variant that can be used to elevate privilege locally from a domain joined user to local System privileges.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-system.*
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
- Privilege Escalation
- Credential Access
Version: 1
Added (Elastic Stack release): 8.3.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editsequence by host.id with maxspan=5m [authentication where /* event 4624 need to be logged */ event.action == "logged-in" and event.outcome == "success" and /* authenticate locally using relayed kerberos Ticket */ winlog.event_data.AuthenticationPackageName :"Kerberos" and winlog.logon.type == "Network" and cidrmatch(source.ip, "127.0.0.0/8", "::1") and source.port > 0] by winlog.event_data.TargetLogonId [any where /* event 4697 need to be logged */ event.action : "service-installed"] by winlog.event_data.SubjectLogonId
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Create or Modify System Process
- ID: T1543
- Reference URL: https://attack.mitre.org/techniques/T1543/
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Steal or Forge Kerberos Tickets
- ID: T1558
- Reference URL: https://attack.mitre.org/techniques/T1558/