Possible DNS Query To MEGA Hosting Website - DNS Client (via dns-client)

This rule detects DNS queries for subdomains related to MEGA sharing website

SigmamediumWindowsv1
sigma
title: Possible DNS Query To MEGA Hosting Website - DNS Client (via dns-client)
id: 4f7bc9c7-e67e-5b5a-8bb5-2178e727ae19
status: stable
description: This rule detects DNS queries for subdomains related to MEGA sharing website
references:
    - https://attack.mitre.org/techniques/T1567/002/
    - https://research.nccgroup.com/2021/05/27/detecting-rclone-an-effective-tool-for-exfiltration/
author: Huntrule Team
date: 2026-03-20
tags:
    - attack.exfiltration
    - attack.t1567.002
logsource:
    product: windows
    service: dns-client
    definition: 'Requirements: Microsoft-Windows-DNS Client Events/Operational Event Log must be enabled/collected in order to receive the events.'
detection:
    selection:
        EventID: 3008
        QueryName|contains: 'userstorage.mega.co.nz'
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.