{"id":"f37aba28-a9e6-4045-882c-d5004043b337","title":"Potential Arbitrary File Download Via Cmdl32.EXE","description":"Detects execution of Cmdl32 with the \"/vpn\" and \"/lan\" flags.\nAttackers can abuse this utility in order to download arbitrary files via a configuration file.\nInspect the location and the content of the file passed as an argument in order to determine if it is suspicious.\n","author":"frack113","status":"test","level":"medium","date":"2021-11-03","modified":"2024-04-22","tags":["attack.execution","attack.stealth","attack.t1218","attack.t1202"],"technique_ids":["T1202","T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://lolbas-project.github.io/lolbas/Binaries/Cmdl32/","https://twitter.com/SwiftOnSecurity/status/1455897435063074824","https://github.com/LOLBAS-Project/LOLBAS/pull/151"],"source_path":"rules/windows/process_creation/proc_creation_win_cmdl32_arbitrary_file_download.yml","source_sha256":"3c415b8adf430ea237f4c30604ff6ce249c439afd833ad271cfadbd9e244c436","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_cmdl32_arbitrary_file_download.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Arbitrary File Download Via Cmdl32.EXE\nid: f37aba28-a9e6-4045-882c-d5004043b337\nstatus: test\ndescription: |\n    Detects execution of Cmdl32 with the \"/vpn\" and \"/lan\" flags.\n    Attackers can abuse this utility in order to download arbitrary files via a configuration file.\n    Inspect the location and the content of the file passed as an argument in order to determine if it is suspicious.\nreferences:\n    - https://lolbas-project.github.io/lolbas/Binaries/Cmdl32/\n    - https://twitter.com/SwiftOnSecurity/status/1455897435063074824\n    - https://github.com/LOLBAS-Project/LOLBAS/pull/151\nauthor: frack113\ndate: 2021-11-03\nmodified: 2024-04-22\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1218\n    - attack.t1202\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\cmdl32.exe'\n        - OriginalFileName: CMDL32.EXE\n    selection_cli:\n        CommandLine|contains|all:\n            - '/vpn'\n            - '/lan'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1202","id":"T1202","name":"Indirect Command Execution","page":"techniques/enterprise/T1202/"},{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/f37aba28-a9e6-4045-882c-d5004043b337.json","kind":"sigma"}