TI Map URL Entity to OfficeActivity Data [Deprecated]

let dt_lookBack = 1h;
// let ioc_lookBack = 14d;
// ThreatIntelligenceIndicator
// // Picking up only IOC's that contain the entities we want
// | where isnotempty(Url)
// | where TimeGenerated >= ago(ioc_lookBack)
// | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
// | where Active == true and ExpirationDateTime > now()
// // using innerunique to keep perf fast and result set low, we only need one match to indicate potential malicious activity that needs to be investigated
// | join kind=innerunique (
// OfficeActivity
// | where TimeGenerated >= ago(dt_lookBack)
// //Extract the Url from a number of potential fields
// | extend Url = iif(OfficeWorkload == "AzureActiveDirectory",extract("(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\(\\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)", 1,ModifiedProperties),tostring(parse_json(ModifiedProperties)[12].NewValue))
// | where isnotempty(Url)
// // Ensure we get a clean URL
// | extend Url = tostring(split(Url, ';')[0])
// | extend OfficeActivity_TimeGenerated = TimeGenerated
// // Project a single user identity that we can use for entity mapping
// | extend User = iif(isnotempty(UserId), UserId, iif(isnotempty(Actor), tostring(parse_json(Actor)[0].ID), tostring(parse_json(Parameters)[0].Value)))
// ) on Url
// | where OfficeActivity_TimeGenerated < ExpirationDateTime
// | summarize OfficeActivity_TimeGenerated = arg_max(OfficeActivity_TimeGenerated, *) by IndicatorId, Url
// | project OfficeActivity_TimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, Operation,
// UserType, OfficeWorkload, Parameters, Url, User
// | extend timestamp = OfficeActivity_TimeGenerated, Name = tostring(split(User, '@', 0)[0]), UPNSuffix = tostring(split(User, '@', 1)[0])
datatable() []

queryPeriod: 14d
version: 1.2.9
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: User
  - identifier: Name
    columnName: Name
  - identifier: UPNSuffix
    columnName: UPNSuffix
- entityType: URL
  fieldMappings:
  - identifier: Url
    columnName: Url
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat%20Intelligence/Analytic%20Rules/URLEntity_OfficeActivity.yaml
severity: Medium
id: 36a9c9e5-3dc1-4ed9-afaa-1d13617bfc2b
relevantTechniques:
- T1071
triggerOperator: gt
requiredDataConnectors:
- connectorId: Office365
  dataTypes:
  - OfficeActivity
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: MicrosoftDefenderThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligenceTaxii
  dataTypes:
  - ThreatIntelligenceIndicator
queryFrequency: 1h
triggerThreshold: 0
kind: Scheduled
name: TI Map URL Entity to OfficeActivity Data [Deprecated]
tactics:
- CommandAndControl
description: |
  'This query is Deprecated as its filter conditions will never yield results. This query identifies any URL indicators of compromise (IOCs) from threat intelligence (TI) by searching for matches in OfficeActivity data.'
query: |
  let dt_lookBack = 1h;
  // let ioc_lookBack = 14d;
  // ThreatIntelligenceIndicator
  // // Picking up only IOC's that contain the entities we want
  // | where isnotempty(Url)
  // | where TimeGenerated >= ago(ioc_lookBack)
  // | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  // | where Active == true and ExpirationDateTime > now()
  // // using innerunique to keep perf fast and result set low, we only need one match to indicate potential malicious activity that needs to be investigated
  // | join kind=innerunique (
  // OfficeActivity
  // | where TimeGenerated >= ago(dt_lookBack)
  // //Extract the Url from a number of potential fields
  // | extend Url = iif(OfficeWorkload == "AzureActiveDirectory",extract("(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\(\\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)", 1,ModifiedProperties),tostring(parse_json(ModifiedProperties)[12].NewValue))
  // | where isnotempty(Url)
  // // Ensure we get a clean URL
  // | extend Url = tostring(split(Url, ';')[0])
  // | extend OfficeActivity_TimeGenerated = TimeGenerated
  // // Project a single user identity that we can use for entity mapping
  // | extend User = iif(isnotempty(UserId), UserId, iif(isnotempty(Actor), tostring(parse_json(Actor)[0].ID), tostring(parse_json(Parameters)[0].Value)))
  // ) on Url
  // | where OfficeActivity_TimeGenerated < ExpirationDateTime
  // | summarize OfficeActivity_TimeGenerated = arg_max(OfficeActivity_TimeGenerated, *) by IndicatorId, Url
  // | project OfficeActivity_TimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, Operation,
  // UserType, OfficeWorkload, Parameters, Url, User
  // | extend timestamp = OfficeActivity_TimeGenerated, Name = tostring(split(User, '@', 0)[0]), UPNSuffix = tostring(split(User, '@', 1)[0])
  datatable() []

{
  "$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/36a9c9e5-3dc1-4ed9-afaa-1d13617bfc2b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/36a9c9e5-3dc1-4ed9-afaa-1d13617bfc2b')]",
      "properties": {
        "alertRuleTemplateName": "36a9c9e5-3dc1-4ed9-afaa-1d13617bfc2b",
        "customDetails": null,
        "description": "'This query is Deprecated as its filter conditions will never yield results. This query identifies any URL indicators of compromise (IOCs) from threat intelligence (TI) by searching for matches in OfficeActivity data.'\n",
        "displayName": "TI Map URL Entity to OfficeActivity Data [Deprecated]",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "User",
                "identifier": "FullName"
              },
              {
                "columnName": "Name",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "Url",
                "identifier": "Url"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat%20Intelligence/Analytic%20Rules/URLEntity_OfficeActivity.yaml",
        "query": "let dt_lookBack = 1h;\n// let ioc_lookBack = 14d;\n// ThreatIntelligenceIndicator\n// // Picking up only IOC's that contain the entities we want\n// | where isnotempty(Url)\n// | where TimeGenerated >= ago(ioc_lookBack)\n// | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n// | where Active == true and ExpirationDateTime > now()\n// // using innerunique to keep perf fast and result set low, we only need one match to indicate potential malicious activity that needs to be investigated\n// | join kind=innerunique (\n// OfficeActivity\n// | where TimeGenerated >= ago(dt_lookBack)\n// //Extract the Url from a number of potential fields\n// | extend Url = iif(OfficeWorkload == \"AzureActiveDirectory\",extract(\"(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\\\(\\\\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)\", 1,ModifiedProperties),tostring(parse_json(ModifiedProperties)[12].NewValue))\n// | where isnotempty(Url)\n// // Ensure we get a clean URL\n// | extend Url = tostring(split(Url, ';')[0])\n// | extend OfficeActivity_TimeGenerated = TimeGenerated\n// // Project a single user identity that we can use for entity mapping\n// | extend User = iif(isnotempty(UserId), UserId, iif(isnotempty(Actor), tostring(parse_json(Actor)[0].ID), tostring(parse_json(Parameters)[0].Value)))\n// ) on Url\n// | where OfficeActivity_TimeGenerated < ExpirationDateTime\n// | summarize OfficeActivity_TimeGenerated = arg_max(OfficeActivity_TimeGenerated, *) by IndicatorId, Url\n// | project OfficeActivity_TimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, ExpirationDateTime, ConfidenceScore, Operation,\n// UserType, OfficeWorkload, Parameters, Url, User\n// | extend timestamp = OfficeActivity_TimeGenerated, Name = tostring(split(User, '@', 0)[0]), UPNSuffix = tostring(split(User, '@', 1)[0])\ndatatable() []\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.2.9",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}