ExtraHop named a Leader in the 2025 Forrester Wave™: Network Analysis And Visibility Solutions

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DETECTION OVERVIEW

Unusual LDAP Query Activity

Risk Factors

Enumeration is a simple but important step taken by attackers after an initial compromise. Attackers must have knowledge about LDAP and Active Directory objects to enumerate information with LDAP queries. Enumeration activity typically does not negatively affect network performance, but attackers can leverage this information to find new targets in an attack campaign.

The system might change the risk score for this detection.

Category

Reconnaissance
Detection diagram
Next in Reconnaissance: Unusual Remote Admin Connection Requests

Attack Background

LDAP enables administrators to search for, create, or modify objects on a directory server. Legitimate LDAP queries routinely search for a specific object. Objects represent an entity such as a user, group, or workstation. After infiltrating a network, an attacker might create enumeration LDAP queries with search filters that retrieve a large amount of information about general object types. Attack tools, such as BloodHound, can also create enumeration LDAP queries. With this information, an attacker can make lists of users, groups, services, and workstations to target in future attacks.

Mitigation Options

Limit domain object privileges to reduce the information users can enumerate through scans and tools such as Bloodhound
Because securing LDAP servers can be difficult without compromising functionality, monitor and investigate unusual LDAP activity quickly to minimize potential damage

MITRE ATT&CK ID

Associated content

Announcing The Forrester Wave™: Network Analysis And Visibility Solutions, Q4 2025

Network analysis and visibility solutions remain underrepresented in enterprises. Find out why in this preview of a new Wave report.

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ExtraHop® Named a Leader in First-Ever Gartner® Magic Quadrant™ for Network Detection and Response — ExtraHop

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News

Detections

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Docs

The 2025 ExtraHop Global Threat Landscape Report: The Alarming Reality of Threat Actor Dwell Time and Deeper Network Access — ExtraHop

This analysis exposes the critical link between an organization's lack of internal visibility and the escalating cost of compromise, demanding an urgent re-evaluation of how core business assets are protected.

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ExtraHop RevealX MITRE ATT&CK Coverage 2024 — ExtraHop

Learn why you need to be wary of the claims certain network detection and response providers make about their coverage against the MITRE ATT&CK framework.

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MITRE ATT&CK - Network Detection & Response with RevealX — ExtraHop

Learn how NDR from RevealX helps security teams detect and investigate more adversary TTPs in the MITRE ATT&CK framework than rule-based tools.

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