Event ID 18456 —

{
  "system": {
    "provider": "MSSQL$RADAR",
    "guid": "",
    "event_source_name": "",
    "event_id": 18456,
    "version": 0,
    "level": 0,
    "task": 4,
    "opcode": 0,
    "keywords": 40532396646334464,
    "time_created": "2020-07-15T11:31:21.474283+00:00",
    "event_record_id": 58857,
    "correlation": {},
    "execution": {
      "process_id": 0,
      "thread_id": 0
    },
    "channel": "Application",
    "computer": "mssql01.offsec.lan",
    "security": {
      "user_id": ""
    }
  },
  "event_data": {
    "Data": [
      "unexisting-user",
      " Reason: An attempt to login using SQL authentication failed. Server is configured for Windows authentication only.",
      " [CLIENT: 10.23.23.9]"
    ],
    "Binary": "GEgAAA4AAAAOAAAATQBTAFMAUQBMADAAMQBcAFIAQQBEAEEAUgAAAAcAAABtAGEAcwB0AGUAcgAAAA=="
  },
  "message": ""
}