Microsoft Sentinel Analytic Rules
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Imperva - Critical severity event not blocked

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Id4d365217-f96a-437c-9c57-53594fa261c3
RulenameImperva - Critical severity event not blocked
DescriptionDetects when critical severity event was not blocked.
SeverityHigh
TacticsInitialAccess
TechniquesT1190
T1133
Required data connectorsImpervaWAFCloudAPI
KindScheduled
Query frequency10m
Query period10m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAttackNotBlocked.yaml
Version1.0.1
Arm template4d365217-f96a-437c-9c57-53594fa261c3.json
Deploy To Azure
ImpervaWAFCloud
| where EventSeverity =~ 'CRITICAL'
| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
| extend IPCustomEntity = SrcIpAddr
name: Imperva - Critical severity event not blocked
query: |
  ImpervaWAFCloud
  | where EventSeverity =~ 'CRITICAL'
  | where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
  | extend IPCustomEntity = SrcIpAddr  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAttackNotBlocked.yaml
queryFrequency: 10m
triggerThreshold: 0
requiredDataConnectors:
- dataTypes:
  - ImpervaWAFCloud
  connectorId: ImpervaWAFCloudAPI
version: 1.0.1
status: Available
queryPeriod: 10m
id: 4d365217-f96a-437c-9c57-53594fa261c3
triggerOperator: gt
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
relevantTechniques:
- T1190
- T1133
severity: High
description: |
    'Detects when critical severity event was not blocked.'
kind: Scheduled
tactics:
- InitialAccess
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/4d365217-f96a-437c-9c57-53594fa261c3')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/4d365217-f96a-437c-9c57-53594fa261c3')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "Imperva - Critical severity event not blocked",
        "description": "'Detects when critical severity event was not blocked.'\n",
        "severity": "High",
        "enabled": true,
        "query": "ImpervaWAFCloud\n| where EventSeverity =~ 'CRITICAL'\n| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1190",
          "T1133"
        ],
        "alertRuleTemplateName": "4d365217-f96a-437c-9c57-53594fa261c3",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "IPCustomEntity"
              }
            ],
            "entityType": "IP"
          }
        ],
        "status": "Available",
        "templateVersion": "1.0.1",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAttackNotBlocked.yaml"
      }
    }
  ]
}