Sigma rule: SMB over QUIC Via PowerShell Script

Rule

Title

SMB over QUIC Via PowerShell Script

Status

test

Level

medium

Author

frack113

Date

2023-07-21

File

rules-threat-hunting/windows/powershell/powershell_script/posh_ps_new_smbmapping_quic.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the mounting of Windows SMB shares over QUIC, which can be an unexpected event in some enterprise environments

Log source

product

windows

category

ps_script

definition

Requirements: Script Block Logging must be enabled

Detection

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

False positives (as the rule lists them)

• 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.

Tags

• attack.lateral-movement
• attack.t1570
• detection.threat-hunting

MITRE ATT&CK ids this rule names

• T1570

Related rules

• 2238d337-42fb-4971-9a68-63570f2aede4 (similar)

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/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-threat-hunting/windows/powershell/powershell_script/posh_ps_new_smbmapping_quic.yml