Microsoft Sentinel Analytic Rules
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Contrast Probes

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Id297596de-d9ae-4fb8-b6ff-00fc01c9462d
RulenameContrast Probes
DescriptionCreates Incidents for Probed events sourced from the Contrast Protect agent.
SeverityInformational
TacticsInitialAccess
Exfiltration
TechniquesT1566
Required data connectorsCefAma
ContrastProtect
ContrastProtectAma
KindScheduled
Query frequency5m
Query period5m
Trigger threshold10
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Contrast Protect/Analytic Rules/ContrastProbes.yaml
Version1.0.2
Arm template297596de-d9ae-4fb8-b6ff-00fc01c9462d.json
Deploy To Azure
let extract_data=(a:string, k:string) {
  parse_urlquery(replace(@';', @'&', a))["Query Parameters"][k]
};

CommonSecurityLog 
| where DeviceVendor == "Contrast Security"
| where AdditionalExtensions contains "PROBED" or AdditionalExtensions contains "INEFFECTIVE"
| extend DeviceProduct
| extend SourceIP
| extend DeviceVersion
| extend Activity
| extend ApplicationProtocol
| extend RequestURL
| extend RequestMethod
| extend Rule = extract_data(AdditionalExtensions, 'pri')
relevantTechniques:
- T1566
name: Contrast Probes
query: |
  let extract_data=(a:string, k:string) {
    parse_urlquery(replace(@';', @'&', a))["Query Parameters"][k]
  };

  CommonSecurityLog 
  | where DeviceVendor == "Contrast Security"
  | where AdditionalExtensions contains "PROBED" or AdditionalExtensions contains "INEFFECTIVE"
  | extend DeviceProduct
  | extend SourceIP
  | extend DeviceVersion
  | extend Activity
  | extend ApplicationProtocol
  | extend RequestURL
  | extend RequestMethod
  | extend Rule = extract_data(AdditionalExtensions, 'pri')  
queryPeriod: 5m
tactics:
- InitialAccess
- Exfiltration
customDetails:
  Agent: DeviceProduct
  Details: AdditionalExtensions
  Application: ApplicationProtocol
  AgentVersion: DeviceVersion
  Attack: Activity
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: ContrastProtect
- dataTypes:
  - CommonSecurityLog
  connectorId: ContrastProtectAma
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: SourceIP
    identifier: Address
- entityType: URL
  fieldMappings:
  - columnName: RequestURL
    identifier: Url
- entityType: CloudApplication
  fieldMappings:
  - columnName: ApplicationProtocol
    identifier: Name
- entityType: Malware
  fieldMappings:
  - columnName: Activity
    identifier: Name
  - columnName: Rule
    identifier: Category
id: 297596de-d9ae-4fb8-b6ff-00fc01c9462d
description: |
    'Creates Incidents for Probed events sourced from the Contrast Protect agent.'
status: Available
queryFrequency: 5m
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Contrast Protect/Analytic Rules/ContrastProbes.yaml
triggerThreshold: 10
severity: Informational
version: 1.0.2
{
  "$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/297596de-d9ae-4fb8-b6ff-00fc01c9462d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/297596de-d9ae-4fb8-b6ff-00fc01c9462d')]",
      "properties": {
        "alertRuleTemplateName": "297596de-d9ae-4fb8-b6ff-00fc01c9462d",
        "customDetails": {
          "Agent": "DeviceProduct",
          "AgentVersion": "DeviceVersion",
          "Application": "ApplicationProtocol",
          "Attack": "Activity",
          "Details": "AdditionalExtensions"
        },
        "description": "'Creates Incidents for Probed events sourced from the Contrast Protect agent.'\n",
        "displayName": "Contrast Probes",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "RequestURL",
                "identifier": "Url"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "ApplicationProtocol",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "Malware",
            "fieldMappings": [
              {
                "columnName": "Activity",
                "identifier": "Name"
              },
              {
                "columnName": "Rule",
                "identifier": "Category"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Contrast Protect/Analytic Rules/ContrastProbes.yaml",
        "query": "let extract_data=(a:string, k:string) {\n  parse_urlquery(replace(@';', @'&', a))[\"Query Parameters\"][k]\n};\n\nCommonSecurityLog \n| where DeviceVendor == \"Contrast Security\"\n| where AdditionalExtensions contains \"PROBED\" or AdditionalExtensions contains \"INEFFECTIVE\"\n| extend DeviceProduct\n| extend SourceIP\n| extend DeviceVersion\n| extend Activity\n| extend ApplicationProtocol\n| extend RequestURL\n| extend RequestMethod\n| extend Rule = extract_data(AdditionalExtensions, 'pri')\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Informational",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration",
          "InitialAccess"
        ],
        "techniques": [
          "T1566"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 10
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}