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Newest: 2.0.2
Translation Workspace
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Active Rule
Potential Privilege Escalation via Local Kerberos Relay over LDAP
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential Privilege Escalation via Local Kerberos Relay over LDAP
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Potential Privilege Escalation via Local Kerberos Relay over LDAP
id: 749c9f5e-b353-4b90-a9c1-05243357ca4b
status: test
description: |
Detects a suspicious local successful logon event where the Logon Package is Kerberos, the remote address is set to localhost, and the target user SID is the built-in local Administrator account.
This may indicate an attempt to leverage a Kerberos relay attack variant that can be used to elevate privilege locally from a domain joined limited user to local System privileges.
references:
- https://twitter.com/sbousseaden/status/1518976397364056071?s=12&t=qKO5eKHvWhAP19a50FTZ7g
- https://github.com/elastic/detection-rules/blob/5fe7833312031a4787e07893e27e4ea7a7665745/rules/_deprecated/privilege_escalation_krbrelayup_suspicious_logon.toml#L38
author: Elastic, @SBousseaden
date: 2022-04-27
modified: 2024-08-13
tags:
- attack.defense-evasion
- attack.privilege-escalation
- attack.credential-access
- attack.t1548
logsource:
product: windows
service: security
detection:
selection:
EventID: 4624
LogonType: 3
AuthenticationPackageName: 'Kerberos'
IpAddress: '127.0.0.1'
TargetUserSid|startswith: 'S-1-5-21-'
TargetUserSid|endswith: '-500'
filter_main_ip_null:
IpPort: '0'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/builtin/security/account_management/win_security_susp_privesc_kerberos_relay_over_ldap.yml