> 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/suspicious-print-system-remote-protocol-usage-by-a-process.md).

# Suspicious Print System Remote Protocol usage by a process

### 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                           |
| ATT\&CK Tactic       | Credential Access (TA0006)                   |
| ATT\&CK Technique    | Forced Authentication (T1187)                |
| Severity             | Low                                          |

### Description

A host which is trusted for unconstrained delegation initiated an SMB connection to a DC using the Print System Remote Protocol. An attacker can abuse such sessions for relay attacks.

### Attacker's Goals

Elevate privileges from standard domain user to domain admin.

### Investigative actions

* Check if the domain controller is patched or vulnerable to the attack.
* Check if the suspected account is compromised.
* Check if the source machine is trusted for unconstrained delegation and verify that the machine's configuration should stay that way.
* Follow actions by the account and if it performed a DCSync.


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