Possible GPO Enumeration

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 (Client), LDAP Analytics (Server)
ATT&CK Tactic	Discovery (TA0007)
ATT&CK Technique	Group Policy Discovery (T1615)
Severity	Informational

Description

A possible GPO enumeration via LDAP was performed. Such enumeration may be used during attacks against the organization.

Attacker's Goals

An attacker is attempting to enumerate Active Directory.

Investigative actions

• Investigate the LDAP search query for any suspicious indicators.
• Look for additional LDAP queries the user executed that might be suspicious.
• Determine whether the search query is generic. Wide search queries (often using wildcards) tend to be more suspicious. In our case, we are looking for targeted search queries.
• Check if the process executes LDAP search queries as part of its normal behavior.

Variations

Suspicious GPO Enumeration by an LDAP tool

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007)
ATT&CK Technique	Group Policy Discovery (T1615)
Severity	Medium

Description

A possible GPO enumeration via LDAP was performed. Such enumeration may be used during attacks against the organization.

Attacker's Goals

An attacker is attempting to enumerate Active Directory.

Investigative actions

• Investigate the LDAP search query for any suspicious indicators.
• Look for additional LDAP queries the user executed that might be suspicious.
• Determine whether the search query is generic. Wide search queries (often using wildcards) tend to be more suspicious. In our case, we are looking for targeted search queries.
• Check if the process executes LDAP search queries as part of its normal behavior.

Possible GPO Enumeration by a Suspicious Process

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007)
ATT&CK Technique	Group Policy Discovery (T1615)
Severity	Low

Description

A possible GPO enumeration via LDAP was performed. Such enumeration may be used during attacks against the organization.

Attacker's Goals

An attacker is attempting to enumerate Active Directory.

Investigative actions

• Investigate the LDAP search query for any suspicious indicators.
• Look for additional LDAP queries the user executed that might be suspicious.
• Determine whether the search query is generic. Wide search queries (often using wildcards) tend to be more suspicious. In our case, we are looking for targeted search queries.
• Check if the process executes LDAP search queries as part of its normal behavior.