Elastic Security Detection Rules

KRBTGT Delegation Backdoor

Last updated 9 days ago on 2025-01-22
Created 3 years ago on 2022-01-27

About

Identifies the modification of the msDS-AllowedToDelegateTo attribute to KRBTGT. Attackers can use this technique to maintain persistence to the domain by having the ability to request tickets for the KRBTGT service.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: PersistenceUse Case: Active Directory MonitoringData Source: Active DirectoryData Source: SystemLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Persistence (TA0003)(opens in a new tab or window)

↳ Account Manipulation (T1098)(opens in a new tab or window)

Credential Access (TA0006)(opens in a new tab or window)

↳ Steal or Forge Kerberos Tickets (T1558)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
winlogbeat-*logs-system.*logs-windows.*
Related Integrations

system(opens in a new tab or window)

windows(opens in a new tab or window)

Query
iam where event.code == "4738" and winlog.event_data.AllowedToDelegateTo : "*krbtgt*"

Install detection rules in Elastic Security

Detect KRBTGT Delegation Backdoor in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).