{"id":"867356ee-9352-41c9-a8f2-1be690d78216","title":"Potentially Suspicious Regsvr32 HTTP/FTP Pattern","description":"Detects regsvr32 execution to download/install/register new DLLs that are hosted on Web or FTP servers.","author":"Florian Roth (Nextron Systems)","status":"test","level":"medium","date":"2023-05-24","modified":"2023-05-26","tags":["attack.stealth","attack.t1218.010"],"technique_ids":["T1218.010"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/mrd0x/status/1461041276514623491","https://twitter.com/tccontre18/status/1480950986650832903","https://lolbas-project.github.io/lolbas/Binaries/Regsvr32/"],"source_path":"rules/windows/process_creation/proc_creation_win_regsvr32_network_pattern.yml","source_sha256":"d7fca474580984f4e629177ae65531c3814371a1eca43c33bd542567bcba2550","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_regsvr32_network_pattern.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potentially Suspicious Regsvr32 HTTP/FTP Pattern\nid: 867356ee-9352-41c9-a8f2-1be690d78216\nrelated:\n    - id: 8e2b24c9-4add-46a0-b4bb-0057b4e6187d\n      type: obsolete\nstatus: test\ndescription: Detects regsvr32 execution to download/install/register new DLLs that are hosted on Web or FTP servers.\nreferences:\n    - https://twitter.com/mrd0x/status/1461041276514623491\n    - https://twitter.com/tccontre18/status/1480950986650832903\n    - https://lolbas-project.github.io/lolbas/Binaries/Regsvr32/\nauthor: Florian Roth (Nextron Systems)\ndate: 2023-05-24\nmodified: 2023-05-26\ntags:\n    - attack.stealth\n    - attack.t1218.010\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\regsvr32.exe'\n        - OriginalFileName: 'REGSVR32.EXE'\n    selection_flag:\n        CommandLine|contains:\n            - ' /i'\n            - ' -i'\n    selection_protocol:\n        CommandLine|contains:\n            - 'ftp'\n            - 'http'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218.010","id":"T1218.010","name":"Regsvr32","page":"techniques/enterprise/T1218.010/"}],"data_path":"data/detection-rules/867356ee-9352-41c9-a8f2-1be690d78216.json","kind":"sigma"}