{"id":"07837ab9-60e1-481f-a74d-c31fb496a94c","title":"Network Communication Initiated To Portmap.IO Domain","description":"Detects an executable accessing the portmap.io domain, which could be a sign of forbidden C2 traffic or data exfiltration by malicious actors","author":"Florian Roth (Nextron Systems)","status":"test","level":"medium","date":"2024-05-31","modified":"","tags":["attack.t1041","attack.command-and-control","attack.t1090.002","attack.exfiltration"],"technique_ids":["T1041","T1090.002"],"logsource":{"category":"network_connection","product":"windows"},"falsepositives":["Legitimate use of portmap.io domains"],"references":["https://portmap.io/","https://github.com/rapid7/metasploit-framework/issues/11337","https://pro.twitter.com/JaromirHorejsi/status/1795001037746761892/photo/2"],"source_path":"rules/windows/network_connection/net_connection_win_domain_portmap.yml","source_sha256":"0ee49ec4ca23763042f31f2b8bad10dbb73dcdf12740b269b9a5c7e2d4881e8d","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/network_connection/net_connection_win_domain_portmap.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Network Communication Initiated To Portmap.IO Domain\nid: 07837ab9-60e1-481f-a74d-c31fb496a94c\nstatus: test\ndescription: Detects an executable accessing the portmap.io domain, which could be a sign of forbidden C2 traffic or data exfiltration by malicious actors\nreferences:\n    - https://portmap.io/\n    - https://github.com/rapid7/metasploit-framework/issues/11337\n    - https://pro.twitter.com/JaromirHorejsi/status/1795001037746761892/photo/2\nauthor: Florian Roth (Nextron Systems)\ndate: 2024-05-31\ntags:\n    - attack.t1041\n    - attack.command-and-control\n    - attack.t1090.002\n    - attack.exfiltration\nlogsource:\n    category: network_connection\n    product: windows\ndetection:\n    selection:\n        Initiated: 'true'\n        DestinationHostname|endswith: '.portmap.io'\n    condition: selection\nfalsepositives:\n    - Legitimate use of portmap.io domains\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1041","id":"T1041","name":"Exfiltration Over C2 Channel","page":"techniques/enterprise/T1041/"},{"key":"enterprise/T1090.002","id":"T1090.002","name":"External Proxy","page":"techniques/enterprise/T1090.002/"}],"data_path":"data/detection-rules/07837ab9-60e1-481f-a74d-c31fb496a94c.json","kind":"sigma"}