Hayabusa medium test sigma

Potentially Suspicious WebDAV LNK Execution

Detects possible execution via LNK file accessed on a WebDAV server.

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Detection Logic

{
  "process_creation": {
    "EventID": 4688,
    "Channel": "Security"
  },
  "selection": {
    "CommandLine
| contains": "\\DavWWWRoot\\",
    "ParentProcessName
| endswith": "\\explorer.exe",
    "NewProcessName
| endswith": [
      "\\cmd.exe",
      "\\cscript.exe",
      "\\mshta.exe",
      "\\powershell.exe",
      "\\pwsh.exe",
      "\\wscript.exe"
    ]
  },
  "condition": "process_creation and selection"
}

False Positives

  • ⚠ Unknown

Field Validations

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