{"id":"21dd6d38-2b18-4453-9404-a0fe4a0cc288","title":"Curl Download And Execute Combination","description":"Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.","author":"Sreeman, Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2020-01-13","modified":"2024-03-05","tags":["attack.stealth","attack.t1218","attack.command-and-control","attack.t1105"],"technique_ids":["T1105","T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://medium.com/@reegun/curl-exe-is-the-new-rundll32-exe-lolbin-3f79c5f35983"],"source_path":"rules/windows/process_creation/proc_creation_win_cmd_curl_download_exec_combo.yml","source_sha256":"9febe7da7a7bb4206637136fd19903ab283c65d17aed78637e8b9b1154c1df9b","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_cmd_curl_download_exec_combo.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Curl Download And Execute Combination\nid: 21dd6d38-2b18-4453-9404-a0fe4a0cc288\nstatus: test\ndescription: Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.\nreferences:\n    - https://medium.com/@reegun/curl-exe-is-the-new-rundll32-exe-lolbin-3f79c5f35983 # Dead Link\nauthor: Sreeman, Nasreddine Bencherchali (Nextron Systems)\ndate: 2020-01-13\nmodified: 2024-03-05\ntags:\n    - attack.stealth\n    - attack.t1218\n    - attack.command-and-control\n    - attack.t1105\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine|contains|windash: ' -c '\n        CommandLine|contains|all:\n            - 'curl '\n            - 'http'\n            - '-o'\n            - '&'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1105","id":"T1105","name":"Ingress Tool Transfer","page":"techniques/enterprise/T1105/"},{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/21dd6d38-2b18-4453-9404-a0fe4a0cc288.json","kind":"sigma"}