Possible DNS Query Request By QuickAssist.EXE (via dns_query)

title: Possible DNS Query Request By QuickAssist.EXE (via dns_query)
id: 5754626e-cb7e-529a-a608-33977c3a6f64
status: stable
description: This rule detects DNS queries initiated by "QuickAssist.exe" to Microsoft Quick Assist primary endpoint that is leveraged to establish a session.
references:
    - https://attack.mitre.org/techniques/T1210/
    - https://attack.mitre.org/techniques/T1071/001/
    - https://www.microsoft.com/en-us/security/blog/2024/05/15/threat-actors-misusing-quick-assist-in-social-engineering-attacks-leading-to-ransomware/
    - https://www.linkedin.com/posts/kevin-beaumont-security_ive-been-assisting-a-few-orgs-hit-with-successful-activity-7268055739116445701-xxjZ/
    - https://x.com/cyb3rops/status/1862406110365245506
    - https://learn.microsoft.com/en-us/windows/client-management/client-tools/quick-assist
author: Huntrule Team
date: 2026-01-09
tags:
    - attack.command-and-control
    - attack.initial-access
    - attack.lateral-movement
    - attack.t1071.001
    - attack.t1210
logsource:
    category: dns_query
    product: windows
detection:
    selection:
        Image|endswith: '\QuickAssist.exe'
        QueryName|endswith: 'remoteassistance.support.services.microsoft.com'
    condition: selection
falsepositives:
    - Unknown
level: low