Hayabusa medium test sigma

Potential Vivaldi_elf.DLL Sideloading

Detects potential DLL sideloading of "vivaldi_elf.dll"

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Detection Logic

{
  "image_load": {
    "EventID": 7,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "ImageLoaded
| endswith": "\\vivaldi_elf.dll"
  },
  "filter_main_legit_path": {
    "Image
| endswith": "\\Vivaldi\\Application\\vivaldi.exe",
    "ImageLoaded
| contains": "\\Vivaldi\\Application\\"
  },
  "condition": "image_load and (selection and not 1 of filter_main_*)"
}

False Positives

  • ⚠ Unknown

Field Validations

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