Preview - TI map IP entity to Cloud App Events

let dt_lookBack = 1d;
let ioc_lookBack = 14d; 
let IP_Indicators = ThreatIntelligenceIndicator
  | where TimeGenerated >= ago(ioc_lookBack)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true and ExpirationDateTime > now()
  | where isnotempty(NetworkIP)
or isnotempty(EmailSourceIpAddress)
or isnotempty(NetworkDestinationIP)
or isnotempty(NetworkSourceIP)
  | extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
  | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
  | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity);
IP_Indicators
  | join kind=innerunique (
  CloudAppEvents
    | where isnotempty(IPAddress)
    | where TimeGenerated >= ago(dt_lookBack)
    | extend CloudAppEvents_TimeGenerated = TimeGenerated) on $left.TI_ipEntity == $right.IPAddress
    | where CloudAppEvents_TimeGenerated < ExpirationDateTime
    | summarize CloudAppEventsTimeGenerated = argmax(CloudAppEvents_TimeGenerated, *) by IndicatorId, IPAddress
    | extend
        Description = max_CloudAppEvents_TimeGenerated_Description,
        ActivityGroupNames = max_CloudAppEvents_TimeGenerated_ActivityGroupNames,
        ThreatType = max_CloudAppEvents_TimeGenerated_ThreatType,
        ExpirationDateTime = max_CloudAppEvents_TimeGenerated_ExpirationDateTime,
        ConfidenceScore = max_CloudAppEvents_TimeGenerated_ConfidenceScore,
        TI_ipEntity = max_CloudAppEvents_TimeGenerated_TI_ipEntity,
        NetworkDestinationIP = max_CloudAppEvents_TimeGenerated_NetworkDestinationIP,
        NetworkSourceIP = max_CloudAppEvents_TimeGenerated_NetworkSourceIP,
        EmailSourceIPAddress = max_CloudAppEvents_TimeGenerated_EmailSourceIpAddress
    | project CloudAppEventsTimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, TI_ipEntity, NetworkDestinationIP, NetworkSourceIP, EmailSourceIPAddress

relevantTechniques:
- T1071
name: Preview - TI map IP entity to Cloud App Events
requiredDataConnectors:
- dataTypes:
  - CloudAppEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: MicrosoftDefenderThreatIntelligence
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: TI_ipEntity
  entityType: IP
- fieldMappings:
  - identifier: Address
    columnName: NetworkDestinationIP
  entityType: IP
- fieldMappings:
  - identifier: Address
    columnName: NetworkSourceIP
  entityType: IP
- fieldMappings:
  - identifier: Address
    columnName: EmailSourceIPAddress
  entityType: IP
triggerThreshold: 0
id: 4e0a6fc8-697e-4455-be47-831b41ea91ac
tactics:
- CommandAndControl
version: 1.0.3
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/IPEntity_CloudAppEvents.yaml
queryPeriod: 14d
kind: Scheduled
queryFrequency: 1h
severity: Medium
description: |
    'Identifies compromises and attacks and detect malicious activities in one's IP entity from TI'
query: |
  let dt_lookBack = 1d;
  let ioc_lookBack = 14d; 
  let IP_Indicators = ThreatIntelligenceIndicator
    | where TimeGenerated >= ago(ioc_lookBack)
    | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
    | where Active == true and ExpirationDateTime > now()
    | where isnotempty(NetworkIP)
  or isnotempty(EmailSourceIpAddress)
  or isnotempty(NetworkDestinationIP)
  or isnotempty(NetworkSourceIP)
    | extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
    | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
    | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity);
  IP_Indicators
    | join kind=innerunique (
    CloudAppEvents
      | where isnotempty(IPAddress)
      | where TimeGenerated >= ago(dt_lookBack)
      | extend CloudAppEvents_TimeGenerated = TimeGenerated) on $left.TI_ipEntity == $right.IPAddress
      | where CloudAppEvents_TimeGenerated < ExpirationDateTime
      | summarize CloudAppEventsTimeGenerated = argmax(CloudAppEvents_TimeGenerated, *) by IndicatorId, IPAddress
      | extend
          Description = max_CloudAppEvents_TimeGenerated_Description,
          ActivityGroupNames = max_CloudAppEvents_TimeGenerated_ActivityGroupNames,
          ThreatType = max_CloudAppEvents_TimeGenerated_ThreatType,
          ExpirationDateTime = max_CloudAppEvents_TimeGenerated_ExpirationDateTime,
          ConfidenceScore = max_CloudAppEvents_TimeGenerated_ConfidenceScore,
          TI_ipEntity = max_CloudAppEvents_TimeGenerated_TI_ipEntity,
          NetworkDestinationIP = max_CloudAppEvents_TimeGenerated_NetworkDestinationIP,
          NetworkSourceIP = max_CloudAppEvents_TimeGenerated_NetworkSourceIP,
          EmailSourceIPAddress = max_CloudAppEvents_TimeGenerated_EmailSourceIpAddress
      | project CloudAppEventsTimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, TI_ipEntity, NetworkDestinationIP, NetworkSourceIP, EmailSourceIPAddress  
triggerOperator: gt

{
  "$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/4e0a6fc8-697e-4455-be47-831b41ea91ac')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/4e0a6fc8-697e-4455-be47-831b41ea91ac')]",
      "properties": {
        "alertRuleTemplateName": "4e0a6fc8-697e-4455-be47-831b41ea91ac",
        "customDetails": null,
        "description": "'Identifies compromises and attacks and detect malicious activities in one's IP entity from TI'\n",
        "displayName": "Preview - TI map IP entity to Cloud App Events",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "TI_ipEntity",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "NetworkDestinationIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "NetworkSourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "EmailSourceIPAddress",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/IPEntity_CloudAppEvents.yaml",
        "query": "let dt_lookBack = 1d;\nlet ioc_lookBack = 14d; \nlet IP_Indicators = ThreatIntelligenceIndicator\n  | where TimeGenerated >= ago(ioc_lookBack)\n  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n  | where Active == true and ExpirationDateTime > now()\n  | where isnotempty(NetworkIP)\nor isnotempty(EmailSourceIpAddress)\nor isnotempty(NetworkDestinationIP)\nor isnotempty(NetworkSourceIP)\n  | extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)\n  | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)\n  | extend TIipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity);\nIP_Indicators\n  | join kind=innerunique (\n  CloudAppEvents\n    | where isnotempty(IPAddress)\n    | where TimeGenerated >= ago(dt_lookBack)\n    | extend CloudAppEvents_TimeGenerated = TimeGenerated) on $left.TI_ipEntity == $right.IPAddress\n    | where CloudAppEvents_TimeGenerated < ExpirationDateTime\n    | summarize CloudAppEventsTimeGenerated = argmax(CloudAppEvents_TimeGenerated, *) by IndicatorId, IPAddress\n    | extend\n        Description = max_CloudAppEvents_TimeGenerated_Description,\n        ActivityGroupNames = max_CloudAppEvents_TimeGenerated_ActivityGroupNames,\n        ThreatType = max_CloudAppEvents_TimeGenerated_ThreatType,\n        ExpirationDateTime = max_CloudAppEvents_TimeGenerated_ExpirationDateTime,\n        ConfidenceScore = max_CloudAppEvents_TimeGenerated_ConfidenceScore,\n        TI_ipEntity = max_CloudAppEvents_TimeGenerated_TI_ipEntity,\n        NetworkDestinationIP = max_CloudAppEvents_TimeGenerated_NetworkDestinationIP,\n        NetworkSourceIP = max_CloudAppEvents_TimeGenerated_NetworkSourceIP,\n        EmailSourceIPAddress = max_CloudAppEvents_TimeGenerated_EmailSourceIpAddress\n    | project CloudAppEventsTimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, TI_ipEntity, NetworkDestinationIP, NetworkSourceIP, EmailSourceIPAddress\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.0.3",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}