> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/user-and-group-enumeration-via-samr.md).

# User and Group Enumeration via SAMR

### Synopsis

| Field                | Value                                                          |
| -------------------- | -------------------------------------------------------------- |
| Activation Period    | 14 Days                                                        |
| Training Period      | 30 Days                                                        |
| Test Period          | 10 Minutes                                                     |
| Deduplication Period | 1 Day                                                          |
| Required Data        | XDR Agent with eXtended Threat Hunting (XTH)                   |
| ATT\&CK Tactic       | Discovery (TA0007)                                             |
| ATT\&CK Technique    | Account Discovery (T1087), Permission Groups Discovery (T1069) |
| 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.


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