Possible DNS Query To Put.io - DNS Client (via dns-client)

title: Possible DNS Query To Put.io - DNS Client (via dns-client)
id: 732dde27-8ddf-5491-92f3-36c42bcef4b2
status: stable
description: This rule detects DNS queries for subdomains related to "Put.io" sharing website.
references:
    - https://darkatlas.io/blog/medusa-ransomware-group-opsec-failure
author: Huntrule Team
date: 2026-06-17
tags:
    - attack.command-and-control
    - 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:
            - 'api.put.io'
            - 'upload.put.io'
    condition: selection
falsepositives:
    - Unknown
level: medium