Possible GPO Enumeration

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-10-08
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • 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

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

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.