title: SMB Spoolss Name Piped Usage
id: bae2865c-5565-470d-b505-9496c87d0c30
status: test
description: Detects the use of the spoolss named pipe over SMB. This can be used to trigger the authentication via NTLM of any machine that has the spoolservice enabled.
references:
- https://posts.specterops.io/hunting-in-active-directory-unconstrained-delegation-forests-trusts-71f2b33688e1
- https://dirkjanm.io/a-different-way-of-abusing-zerologon/
- https://twitter.com/_dirkjan/status/1309214379003588608
author: OTR (Open Threat Research), @neu5ron
date: 2018-11-28
modified: 2022-10-09
tags:
- attack.lateral-movement
- attack.t1021.002
logsource:
product: zeek
service: smb_files
detection:
selection:
path|endswith: 'IPC$'
name: spoolss
condition: selection
falsepositives:
- Domain Controllers that are sometimes, commonly although should not be, acting as printer servers too
level: medium