Hayabusa medium test sigma

Suspicious Execution of InstallUtil Without Log

Uses the .NET InstallUtil.exe application in order to execute image without log

View Source

Detection Logic

{
  "process_creation": {
    "EventID": 1,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "Image
| endswith": "\\InstallUtil.exe",
    "Image
| contains": "Microsoft.NET\\Framework",
    "CommandLine
| contains
| all": [
      "/logfile= ",
      "/LogToConsole=false"
    ]
  },
  "condition": "process_creation and selection"
}

False Positives

  • ⚠ Unknown

Field Validations

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