Microsoft Sentinel Analytic Rules
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Imperva - Abnormal protocol usage

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Id363307f6-09ba-4926-ad52-03aadfd24b5e
RulenameImperva - Abnormal protocol usage
DescriptionDetects abnormal protocol usage.
SeverityMedium
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/ImpervaAbnormalProtocolUsage.yaml
Version1.0.0
Arm template363307f6-09ba-4926-ad52-03aadfd24b5e.json
Deploy To Azure
ImpervaWAFCloud
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| where DstPortNumber !in ('80', '443')
| extend IPCustomEntity = SrcIpAddr
queryFrequency: 1h
tactics:
- InitialAccess
queryPeriod: 1h
kind: Scheduled
relevantTechniques:
- T1190
- T1133
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAbnormalProtocolUsage.yaml
description: |
    'Detects abnormal protocol usage.'
requiredDataConnectors:
- dataTypes:
  - ImpervaWAFCloud
  connectorId: ImpervaWAFCloudAPI
version: 1.0.0
triggerThreshold: 0
severity: Medium
triggerOperator: gt
id: 363307f6-09ba-4926-ad52-03aadfd24b5e
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
status: Available
name: Imperva - Abnormal protocol usage
query: |
  ImpervaWAFCloud
  | where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
  | where DstPortNumber !in ('80', '443')
  | extend IPCustomEntity = SrcIpAddr  
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/363307f6-09ba-4926-ad52-03aadfd24b5e')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/363307f6-09ba-4926-ad52-03aadfd24b5e')]",
      "properties": {
        "alertRuleTemplateName": "363307f6-09ba-4926-ad52-03aadfd24b5e",
        "customDetails": null,
        "description": "'Detects abnormal protocol usage.'\n",
        "displayName": "Imperva - Abnormal protocol usage",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAbnormalProtocolUsage.yaml",
        "query": "ImpervaWAFCloud\n| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')\n| where DstPortNumber !in ('80', '443')\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}