sigmamediumHunting

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

MITRE ATT&CK

lateral-movement

Detection Query

selection:
  ScriptBlockText|contains|all:
    - New-SmbMapping
    - -TransportType QUIC
condition: selection

Author

frack113

Created

2023-07-21

Data Sources

windowsps_script

Platforms

windows

References

Tags

attack.lateral-movementattack.t1570detection.threat-hunting

Raw Content

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: medium