Microsoft Sentinel Analytic Rules
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Cisco WSA - Suspected protocol abuse

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Id6f756792-4888-48a5-97cf-40d9430dc932
RulenameCisco WSA - Suspected protocol abuse
DescriptionDetects possible protocol abuse.
SeverityMedium
TacticsExfiltration
TechniquesT1048
Required data connectorsCiscoWSA
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml
Version1.0.0
Arm template6f756792-4888-48a5-97cf-40d9430dc932.json
Deploy To Azure
CiscoWSAEvent
| where DstPortNumber !in ('80', '443')
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName
kind: Scheduled
status: Available
triggerThreshold: 0
relevantTechniques:
- T1048
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml
requiredDataConnectors:
- dataTypes:
  - CiscoWSAEvent
  connectorId: CiscoWSA
queryPeriod: 1h
tactics:
- Exfiltration
severity: Medium
triggerOperator: gt
description: |
    'Detects possible protocol abuse.'
query: |
  CiscoWSAEvent
  | where DstPortNumber !in ('80', '443')
  | where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
  | extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName  
name: Cisco WSA - Suspected protocol abuse
version: 1.0.0
id: 6f756792-4888-48a5-97cf-40d9430dc932
queryFrequency: 1h
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
{
  "$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/6f756792-4888-48a5-97cf-40d9430dc932')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6f756792-4888-48a5-97cf-40d9430dc932')]",
      "properties": {
        "alertRuleTemplateName": "6f756792-4888-48a5-97cf-40d9430dc932",
        "customDetails": null,
        "description": "'Detects possible protocol abuse.'\n",
        "displayName": "Cisco WSA - Suspected protocol abuse",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml",
        "query": "CiscoWSAEvent\n| where DstPortNumber !in ('80', '443')\n| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')\n| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration"
        ],
        "techniques": [
          "T1048"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}