{"id":"f38a82d2-fba3-4781-b549-525efbec8506","title":"PUA - 3Proxy Execution","description":"Detects the use of 3proxy, a tiny free proxy server","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2022-09-13","modified":"2023-02-21","tags":["attack.command-and-control","attack.t1572"],"technique_ids":["T1572"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Administrative activity"],"references":["https://github.com/3proxy/3proxy","https://blog.talosintelligence.com/2022/09/lazarus-three-rats.html"],"source_path":"rules/windows/process_creation/proc_creation_win_pua_3proxy_execution.yml","source_sha256":"2f9742c3c49ff9f2e50e0c9dd82ec8dc64b8e5a8ae89d8371b4d8ed73160e20b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_pua_3proxy_execution.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: PUA - 3Proxy Execution\nid: f38a82d2-fba3-4781-b549-525efbec8506\nstatus: test\ndescription: Detects the use of 3proxy, a tiny free proxy server\nreferences:\n    - https://github.com/3proxy/3proxy\n    - https://blog.talosintelligence.com/2022/09/lazarus-three-rats.html\nauthor: Florian Roth (Nextron Systems)\ndate: 2022-09-13\nmodified: 2023-02-21\ntags:\n    - attack.command-and-control\n    - attack.t1572\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        Image|endswith: '\\3proxy.exe'\n    selection_pe:\n        Description: '3proxy - tiny proxy server'\n    selection_params: # param combos seen in the wild\n        CommandLine|contains: '.exe -i127.0.0.1 -p'\n    condition: 1 of selection_*\nfalsepositives:\n    - Administrative activity\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1572","id":"T1572","name":"Protocol Tunneling","page":"techniques/enterprise/T1572/"}],"data_path":"data/detection-rules/f38a82d2-fba3-4781-b549-525efbec8506.json","kind":"sigma"}