{"id":"32410e29-5f94-4568-b6a3-d91a8adad863","title":"PUA - Fast Reverse Proxy (FRP) Execution","description":"Detects the use of Fast Reverse Proxy. frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the Internet.","author":"frack113, Florian Roth","status":"test","level":"high","date":"2022-09-02","modified":"2024-11-23","tags":["attack.command-and-control","attack.t1090"],"technique_ids":["T1090"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Legitimate use"],"references":["https://asec.ahnlab.com/en/38156/","https://github.com/fatedier/frp"],"source_path":"rules/windows/process_creation/proc_creation_win_pua_frp.yml","source_sha256":"277856da69d0f782b21a79553a5a0a201ab4bd7658d602ee8509cfaa6ac74127","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_pua_frp.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 - Fast Reverse Proxy (FRP) Execution\nid: 32410e29-5f94-4568-b6a3-d91a8adad863\nstatus: test\ndescription: Detects the use of Fast Reverse Proxy. frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the Internet.\nreferences:\n    - https://asec.ahnlab.com/en/38156/\n    - https://github.com/fatedier/frp\nauthor: frack113, Florian Roth\ndate: 2022-09-02\nmodified: 2024-11-23\ntags:\n    - attack.command-and-control\n    - attack.t1090\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        Image|endswith:\n            - '\\frpc.exe'\n            - '\\frps.exe'\n    selection_cli:\n        CommandLine|contains: '\\frpc.ini'\n    selection_hashes:\n        # v0.44.0\n        Hashes|contains:\n            - \"MD5=7D9C233B8C9E3F0EA290D2B84593C842\"\n            - \"SHA1=06DDC9280E1F1810677935A2477012960905942F\"\n            - \"SHA256=57B0936B8D336D8E981C169466A15A5FD21A7D5A2C7DAF62D5E142EE860E387C\"\n    condition: 1 of selection_*\nfalsepositives:\n    - Legitimate use\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1090","id":"T1090","name":"Proxy","page":"techniques/enterprise/T1090/"}],"data_path":"data/detection-rules/32410e29-5f94-4568-b6a3-d91a8adad863.json","kind":"sigma"}