{"id":"ae9c6a7c-9521-42a6-915e-5aaa8689d529","title":"CobaltStrike Load by Rundll32","description":"Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.","author":"Wojciech Lesicki","status":"test","level":"high","date":"2021-06-01","modified":"2022-09-16","tags":["attack.stealth","attack.t1218.011"],"technique_ids":["T1218.011"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.cobaltstrike.com/help-windows-executable","https://redcanary.com/threat-detection-report/","https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/"],"source_path":"rules/windows/process_creation/proc_creation_win_hktl_cobaltstrike_load_by_rundll32.yml","source_sha256":"11843d4082e5a994891f49f7dab315aadd084f536bf53f19313f3ef76ca6cbad","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_hktl_cobaltstrike_load_by_rundll32.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: CobaltStrike Load by Rundll32\nid: ae9c6a7c-9521-42a6-915e-5aaa8689d529\nstatus: test\ndescription: Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.\nreferences:\n    - https://www.cobaltstrike.com/help-windows-executable\n    - https://redcanary.com/threat-detection-report/\n    - https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/\nauthor: Wojciech Lesicki\ndate: 2021-06-01\nmodified: 2022-09-16\ntags:\n    - attack.stealth\n    - attack.t1218.011\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_rundll:\n        - Image|endswith: '\\rundll32.exe'\n        - OriginalFileName: RUNDLL32.EXE\n        - CommandLine|contains:\n              - 'rundll32.exe'\n              - 'rundll32 '\n    selection_params:\n        CommandLine|contains: '.dll'\n        CommandLine|endswith:\n            - ' StartW'\n            - ',StartW'\n    condition: all of selection*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.011","id":"T1218.011","name":"Rundll32","page":"techniques/enterprise/T1218.011/"}],"data_path":"data/detection-rules/ae9c6a7c-9521-42a6-915e-5aaa8689d529.json","kind":"sigma"}