SMB over QUIC Via PowerShell Script
Detects the mounting of Windows SMB shares over QUIC, which can be an unexpected event in some enterprise environments
Detection logic
selection
ScriptBlockText|contains|all:
- New-SmbMapping
- -TransportType QUICCondition
selectionRaw YAML
title: SMB over QUIC Via PowerShell Script
id: 6df07c3b-8456-4f8b-87bb-fe31ec964cae
related:
- id: 2238d337-42fb-4971-9a68-63570f2aede4
type: similar
status: test
description: Detects the mounting of Windows SMB shares over QUIC, which can be an unexpected event in some enterprise environments
references:
- https://github.com/redcanaryco/atomic-red-team/blob/74438b0237d141ee9c99747976447dc884cb1a39/atomics/T1570/T1570.md
- https://learn.microsoft.com/en-us/powershell/module/smbshare/new-smbmapping?view=windowsserver2022-ps
- https://www.trustedsec.com/blog/making-smb-accessible-with-ntlmquic/
author: frack113
date: 2023-07-21
tags:
- attack.lateral-movement
- attack.t1570
- detection.threat-hunting
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
ScriptBlockText|contains|all:
- 'New-SmbMapping'
- '-TransportType QUIC'
condition: selection
falsepositives:
- Due to the nature of the script block, the matching of the string could sometimes result in a false positive. Use this rule to hunt for potential malicious or suspicious scripts.
level: mediumFalse positives
- Due to the nature of the script block, the matching of the string could sometimes result in a false positive. Use this rule to hunt for potential malicious or suspicious scripts.