{"id":"2dd2c217-bf68-437a-b57c-fe9fd01d5de8","title":"Potentially Suspicious Regsvr32 HTTP IP Pattern","description":"Detects regsvr32 execution to download and install DLLs located remotely where the address is an IP address.","author":"Florian Roth (Nextron Systems)","status":"test","level":"high","date":"2022-01-11","modified":"2023-05-24","tags":["attack.stealth","attack.t1218.010"],"technique_ids":["T1218.010"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["FQDNs that start with a number such as \"7-Zip\""],"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_http_ip_pattern.yml","source_sha256":"5ed0c24908eb092479cb93eecc3dc212e5c1b5a573d74b18a8322d86e8eae771","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_regsvr32_http_ip_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 IP Pattern\nid: 2dd2c217-bf68-437a-b57c-fe9fd01d5de8\nstatus: test\ndescription: Detects regsvr32 execution to download and install DLLs located remotely where the address is an IP address.\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: 2022-01-11\nmodified: 2023-05-24\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_ip:\n        CommandLine|contains:\n            - ' /i:http://1'\n            - ' /i:http://2'\n            - ' /i:http://3'\n            - ' /i:http://4'\n            - ' /i:http://5'\n            - ' /i:http://6'\n            - ' /i:http://7'\n            - ' /i:http://8'\n            - ' /i:http://9'\n            - ' /i:https://1'\n            - ' /i:https://2'\n            - ' /i:https://3'\n            - ' /i:https://4'\n            - ' /i:https://5'\n            - ' /i:https://6'\n            - ' /i:https://7'\n            - ' /i:https://8'\n            - ' /i:https://9'\n            - ' -i:http://1'\n            - ' -i:http://2'\n            - ' -i:http://3'\n            - ' -i:http://4'\n            - ' -i:http://5'\n            - ' -i:http://6'\n            - ' -i:http://7'\n            - ' -i:http://8'\n            - ' -i:http://9'\n            - ' -i:https://1'\n            - ' -i:https://2'\n            - ' -i:https://3'\n            - ' -i:https://4'\n            - ' -i:https://5'\n            - ' -i:https://6'\n            - ' -i:https://7'\n            - ' -i:https://8'\n            - ' -i:https://9'\n    condition: all of selection_*\nfalsepositives:\n    - FQDNs that start with a number such as \"7-Zip\"\nlevel: high\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/2dd2c217-bf68-437a-b57c-fe9fd01d5de8.json","kind":"sigma"}