A user queried AD CS objects via LDAP

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 with eXtended Threat Hunting (XTH)
Detection Modules	Identity Analytics
Detector Tags	LDAP Analytics (Server), Active Directory Certificate Services Analytics
ATT&CK Tactic	Discovery (TA0007), Credential Access (TA0006)
ATT&CK Technique	File and Directory Discovery (T1083), Steal or Forge Authentication Certificates (T1649)
Severity	Informational

Description

A user queried AD CS objects via LDAP.

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

• Check if the LDAP search query was allowed for the user (logged on at event time).
• Investigate the LDAP search query for any suspicious indicators.

Variations

A user enumerated AD CS objects using suspicious LDAP query

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007), Credential Access (TA0006)
ATT&CK Technique	File and Directory Discovery (T1083), Steal or Forge Authentication Certificates (T1649)
Severity	Low

Description

A user enumerated AD CS objects using suspicious LDAP query.

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

• Check if the LDAP search query was allowed for the user (logged on at event time).
• Investigate the LDAP search query for any suspicious indicators.