KRBTGT Delegation Backdooredit

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.

Rule type: query

Rule indices:

  • winlogbeat-*
  • logs-windows.*
  • logs-system.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Persistence
  • Active Directory

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guideedit

## Config

The 'Audit User Account Management' logging policy must be configured for (Success, Failure).
Steps to implement the logging policy with Advanced Audit Configuration:

Computer Configuration >
Policies >
Windows Settings >
Security Settings >
Advanced Audit Policies Configuration >
Audit Policies >
Account Management >
Audit User Account Management (Success,Failure)

Rule queryedit

event.action:modified-user-account and event.code:4738 and winlog.event_data.AllowedToDelegateTo:*krbtgt*