Suspicious Network Connection Initiated To BTunnels Domains (via network_connection)

title: Suspicious Network Connection Initiated To BTunnels Domains (via network_connection)
id: e0607f2e-cbe3-566c-8b9b-142812fcf080
status: stable
description: This rule detects network connections to BTunnels domains initiated by a process on the system. Attackers can misuse that feature to establish a reverse shell or persistence on a machine.
references:
    - https://attack.mitre.org/techniques/T1572/
    - https://attack.mitre.org/techniques/T1567/
    - https://defr0ggy.github.io/research/Utilizing-BTunnel-For-Data-Exfiltration/
author: Huntrule Team
date: 2026-06-22
tags:
    - attack.exfiltration
    - attack.command-and-control
    - attack.t1567
    - attack.t1572
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Initiated: 'true'
        DestinationHostname|endswith: '.btunnel.co.in'
    condition: selection
falsepositives:
    - Unknown
level: medium