Suspicious Network Traffic Initiated To Portmap.IO Domain (via network_connection)

title: Suspicious Network Traffic Initiated To Portmap.IO Domain (via network_connection)
id: d542a90c-705d-518a-b534-ee4bcf37b414
status: stable
description: This rule detects an executable accessing the portmap.io domain, which could be a sign of forbidden C2 traffic or data exfiltration by hostile actors
references:
    - https://attack.mitre.org/techniques/T1090/002/
    - https://attack.mitre.org/techniques/T1041/
    - https://portmap.io/
    - https://github.com/rapid7/metasploit-framework/issues/11337
    - https://pro.twitter.com/JaromirHorejsi/status/1795001037746761892/photo/2
author: Huntrule Team
date: 2026-05-11
tags:
    - attack.t1041
    - attack.command-and-control
    - attack.t1090.002
    - attack.exfiltration
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        Initiated: 'true'
        DestinationHostname|endswith: '.portmap.io'
    condition: selection
falsepositives:
    - Unknown
level: medium