Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
|
Detection Modules |
Identity Analytics |
Detector Tags |
|
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
A user enabled the EDITF_ATTRIBUTESUBJECTALTNAME2 registry flag, allowing custom Subject Alternative Names (SANs) to be specified on all certificate templates. This could enable attackers to bypass security controls by requesting certificates with user-defined SANs.
Attacker's Goals
- This flag can allow an attacker to obtain a certificate with higher privileges and escalate to Domain Admin.
Investigative actions
- Confirm whether the registry change was authorized by the user or system administrator.
- Monitor certificate enrollments with Subject Alternate Names.
- Restore the secure configuration by disabling the EDITF_ATTRIBUTESUBJECTALTNAME2 flag and enforcing strict certificate policies.
- Investigate any unusual authentication attempts or certificates issued to high-privilege users or accounts.