Ransom Protect Detected a Ransomware Attack

Syslog
| where SyslogMessage contains "Ransomware incident detected"
| extend 
Portal = extract("portal:(\\w+)", 1, SyslogMessage),
EdgeFiler = extract("Edge Filer:(\\w+-\\d+)", 1, SyslogMessage),
IP = extract("\\(IP:([0-9.]+)\\)", 1, SyslogMessage),
User = extract("user:(\\w+)", 1, SyslogMessage),
IncidentType = extract("Incident type:(\\w+)", 1, SyslogMessage),
StartTime = extract("started at \"([^\"]+)\"", 1, SyslogMessage),
EndTime = extract("ended at \"([^\"]+)\"", 1, SyslogMessage)
| project TimeGenerated, Portal, EdgeFiler, IP, User, IncidentType, StartTime, EndTime

status: Available
id: 7a075edf-1cf2-4038-ba9c-c354db6409de
tactics:
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareDetected.yaml
eventGroupingSettings:
  aggregationKind: SingleAlert
name: Ransom Protect Detected a Ransomware Attack
query: |
  Syslog
  | where SyslogMessage contains "Ransomware incident detected"
  | extend 
  Portal = extract("portal:(\\w+)", 1, SyslogMessage),
  EdgeFiler = extract("Edge Filer:(\\w+-\\d+)", 1, SyslogMessage),
  IP = extract("\\(IP:([0-9.]+)\\)", 1, SyslogMessage),
  User = extract("user:(\\w+)", 1, SyslogMessage),
  IncidentType = extract("Incident type:(\\w+)", 1, SyslogMessage),
  StartTime = extract("started at \"([^\"]+)\"", 1, SyslogMessage),
  EndTime = extract("ended at \"([^\"]+)\"", 1, SyslogMessage)
  | project TimeGenerated, Portal, EdgeFiler, IP, User, IncidentType, StartTime, EndTime  
severity: High
customDetails:
  EdgeFiler: EdgeFiler
kind: NRT
suppressionDuration: PT5H
relevantTechniques:
- T1486
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    enabled: false
    matchingMethod: AllEntities
requiredDataConnectors:
- connectorId: CTERA
  dataTypes:
  - Syslog
version: 1.0.2
description: Monitors CTERA platform to detect potential ransomware attacks detected by CTERA Ransom Protect AI engine.
suppressionEnabled: false
alertDetailsOverride:
  alertnameFormat: CTERA Ransom Protect Detected a Ransomware Attack.
  alertDescriptionFormat: CTERA Ransom Protect Detected a Ransomware Attack at {{TimeGenerated}}.
entityMappings:
- fieldMappings:
  - columnName: EdgeFiler
    identifier: HostName
  entityType: Host

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/7a075edf-1cf2-4038-ba9c-c354db6409de')]",
      "kind": "NRT",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/7a075edf-1cf2-4038-ba9c-c354db6409de')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "CTERA Ransom Protect Detected a Ransomware Attack at {{TimeGenerated}}.",
          "alertnameFormat": "CTERA Ransom Protect Detected a Ransomware Attack."
        },
        "alertRuleTemplateName": "7a075edf-1cf2-4038-ba9c-c354db6409de",
        "customDetails": {
          "EdgeFiler": "EdgeFiler"
        },
        "description": "Monitors CTERA platform to detect potential ransomware attacks detected by CTERA Ransom Protect AI engine.",
        "displayName": "Ransom Protect Detected a Ransomware Attack",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "EdgeFiler",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareDetected.yaml",
        "query": "Syslog\n| where SyslogMessage contains \"Ransomware incident detected\"\n| extend \nPortal = extract(\"portal:(\\\\w+)\", 1, SyslogMessage),\nEdgeFiler = extract(\"Edge Filer:(\\\\w+-\\\\d+)\", 1, SyslogMessage),\nIP = extract(\"\\\\(IP:([0-9.]+)\\\\)\", 1, SyslogMessage),\nUser = extract(\"user:(\\\\w+)\", 1, SyslogMessage),\nIncidentType = extract(\"Incident type:(\\\\w+)\", 1, SyslogMessage),\nStartTime = extract(\"started at \\\"([^\\\"]+)\\\"\", 1, SyslogMessage),\nEndTime = extract(\"ended at \\\"([^\\\"]+)\\\"\", 1, SyslogMessage)\n| project TimeGenerated, Portal, EdgeFiler, IP, User, IncidentType, StartTime, EndTime\n",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1486"
        ],
        "templateVersion": "1.0.2"
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}