Detection rules › Elastic
KRBTGT Delegation Backdoor
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.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1098 Account Manipulation |
| Privilege Escalation | T1098 Account Manipulation |
| Credential Access | T1558 Steal or Forge Kerberos Tickets |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Security-Auditing | 4738 | A user account was changed. |
Stages and Predicates
Stage 1: eql:iam
winlog.event_data.AllowedToDelegateTo:"krbtgt"Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
winlog.event_data.AllowedToDelegateTo | wildcard |
|
Neighbors
Broader alternatives (more inclusive than this rule)
These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.
- Weak Encryption Enabled and Kerberoast (drops 1 filter this rule applies)