Microsoft Sentinel Analytic Rules
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Imperva - Request from unexpected countries

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Id58300723-22e0-4096-b33a-aa9b992c3564
RulenameImperva - Request from unexpected countries
DescriptionDetects request attempts from unexpected countries.
SeverityHigh
TacticsInitialAccess
TechniquesT1190
T1133
Required data connectorsImpervaWAFCloudAPI
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaForbiddenCountry.yaml
Version1.0.0
Arm template58300723-22e0-4096-b33a-aa9b992c3564.json
Deploy To Azure
let bl_country = dynamic(['CH', 'KR']);
ImpervaWAFCloud
| where Country in (bl_country)
| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
| extend IPCustomEntity = SrcIpAddr
description: |
    'Detects request attempts from unexpected countries.'
queryPeriod: 1h
name: Imperva - Request from unexpected countries
triggerThreshold: 0
tactics:
- InitialAccess
severity: High
kind: Scheduled
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
queryFrequency: 1h
triggerOperator: gt
id: 58300723-22e0-4096-b33a-aa9b992c3564
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaForbiddenCountry.yaml
version: 1.0.0
query: |
  let bl_country = dynamic(['CH', 'KR']);
  ImpervaWAFCloud
  | where Country in (bl_country)
  | where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
  | extend IPCustomEntity = SrcIpAddr  
requiredDataConnectors:
- connectorId: ImpervaWAFCloudAPI
  dataTypes:
  - ImpervaWAFCloud
relevantTechniques:
- T1190
- T1133
{
  "$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/58300723-22e0-4096-b33a-aa9b992c3564')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/58300723-22e0-4096-b33a-aa9b992c3564')]",
      "properties": {
        "alertRuleTemplateName": "58300723-22e0-4096-b33a-aa9b992c3564",
        "customDetails": null,
        "description": "'Detects request attempts from unexpected countries.'\n",
        "displayName": "Imperva - Request from unexpected countries",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaForbiddenCountry.yaml",
        "query": "let bl_country = dynamic(['CH', 'KR']);\nImpervaWAFCloud\n| where Country in (bl_country)\n| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}