Suspicious Certutil AD CS contact

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent
Detector Tags	Active Directory Certificate Services Analytics
ATT&CK Tactic	Discovery (TA0007), Credential Access (TA0006)
ATT&CK Technique	System Service Discovery (T1007), Steal or Forge Authentication Certificates (T1649)
Severity	Low

Description

A suspicious occurrence of Certutil attempted to contact the AD CS Request Interface.

Attacker's Goals

• An attacker might look for AD CS servers, certificate templates or request certificates.
• With the wrong setting or loose vulnerable templates or enabled enrollment, the attacker will be able to authenticate as users on the network.

Investigative actions

• Look at further action done by the user.
• Investigate whether other non-standard operations were done regarding the AD CS.

Variations

Suspicious Certutil AD CS Admin Interface contact

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007), Credential Access (TA0006)
ATT&CK Technique	System Service Discovery (T1007), Steal or Forge Authentication Certificates (T1649)
Severity	Medium

Description

A suspicious occurrence of Certutil attempted to contact the AD CS Admin Interface.

Attacker's Goals

• An attacker might look for AD CS servers, certificate templates or request certificates.
• With the wrong setting or loose vulnerable templates or enabled enrollment, the attacker will be able to authenticate as users on the network.

Investigative actions

• Look at further action done by the user.
• Investigate whether other non-standard operations were done regarding the AD CS.