{"id":"32b96012-7892-429e-b26c-ac2bf46066ff","title":"Shell32 DLL Execution in Suspicious Directory","description":"Detects shell32.dll executing a DLL in a suspicious directory","author":"Christian Burkard (Nextron Systems)","status":"test","level":"high","date":"2021-11-24","modified":"2023-02-09","tags":["attack.execution","attack.stealth","attack.t1218.011"],"technique_ids":["T1218.011"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://www.group-ib.com/resources/threat-research/red-curl-2.html"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_shell32_susp_execution.yml","source_sha256":"93e5a1c863ce51e31f010d12794cc387ccad996357dd48b82effab2210c47797","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_shell32_susp_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: Shell32 DLL Execution in Suspicious Directory\nid: 32b96012-7892-429e-b26c-ac2bf46066ff\nstatus: test\ndescription: Detects shell32.dll executing a DLL in a suspicious directory\nreferences:\n    - https://www.group-ib.com/resources/threat-research/red-curl-2.html\nauthor: Christian Burkard (Nextron Systems)\ndate: 2021-11-24\nmodified: 2023-02-09\ntags:\n    - attack.execution\n    - attack.stealth\n    - attack.t1218.011\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\rundll32.exe'\n        - OriginalFileName: 'RUNDLL32.EXE'\n    selection_cli:\n        CommandLine|contains|all:\n            - 'shell32.dll'\n            - 'Control_RunDLL'\n        CommandLine|contains:\n            - '%AppData%'\n            - '%LocalAppData%'\n            - '%Temp%'\n            - '%tmp%'\n            - '\\AppData\\'\n            - '\\Temp\\'\n            - '\\Users\\Public\\'\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/32b96012-7892-429e-b26c-ac2bf46066ff.json","kind":"sigma"}