1200KM / sigma-rule
Network Connection Initiated To BTunnels Domains — Sigma Rule
Sigma rule 9e02c8ec-02b9-43e8-81eb-34a475ba7965. Network Connection Initiated To BTunnels Domains — Sigma Rule. Detects network connections to BTunnels domains initiated by a process on the system. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
Rule metadata and linked tags
Author: Kamran Saifullah. Source status: test; severity: medium. Source dates: 2024-09-13 / not supplied.
{
"category": "network_connection",
"product": "windows"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: 69d76c9e8143e1abed93e7242f548e2b5658769a24bfb6bdd607d3af050e1d9b
Detection logic
Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.
title: Network Connection Initiated To BTunnels Domains
id: 9e02c8ec-02b9-43e8-81eb-34a475ba7965
status: test
description: |
Detects network connections to BTunnels domains initiated by a process on the system.
Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
references:
- https://defr0ggy.github.io/research/Utilizing-BTunnel-For-Data-Exfiltration/
author: Kamran Saifullah
date: 2024-09-13
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:
- Legitimate use of BTunnels will also trigger this.
level: medium
False positives
- Legitimate use of BTunnels will also trigger this.
Source references
Connected ecosystem references
Exact source-tagged techniques
Telemetry review
Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.