User and Group Enumeration via SAMR

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

10 Minutes

Deduplication Period

1 Day

Required Data

  • Requires:
    • XDR Agent
  • Requires:
    • eXtended Threat Hunting (XTH)

Detection Modules

ATT&CK Tactic

Discovery (TA0007)

ATT&CK Technique

Severity

Informational

Description

The endpoint performed unfamiliar SAMR querying activity to a domain controller.

Attacker's Goals

An adversary may enumerate users and groups to gain information and plan its lateral movement over the network.

Investigative actions

  • Check if the host is a newly deployed server that provides RPC-based services to multiple hosts.
  • Check if there are any other suspicious activities originating from the same machine.