TI Map IP Entity to Duo Security

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
ThreatIntelIndicators
//extract key part of kv pair
     | extend IndicatorType = replace(@"\[|\]|\""", "", tostring(split(ObservableKey, ":", 0)))
     | where isnotempty(IndicatorType) and IndicatorType == "ipv4-addr"
     | extend NetworkSourceIP = toupper(ObservableValue)
     | extend TrafficLightProtocolLevel = tostring(parse_json(AdditionalFields).TLPLevel)
// Picking up only IOC's that contain the entities we want
| where isnotempty(NetworkSourceIP)
| where TimeGenerated >= ago(ioc_lookBack)
// As there is potentially more than 1 indicator type for matching IP, taking NetworkIP first, then others if that is empty.
// Taking the first non-empty value based on potential IOC match availability
| extend TI_ipEntity = iff(isnotempty(NetworkSourceIP), NetworkSourceIP, NetworkSourceIP)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
| where IsActive == true and ValidUntil > now()
 | join (
     DuoSecurityAuthentication_CL
     | where TimeGenerated >= ago(dt_lookBack)
     | where isnotempty(access_device_ip_s)
     // renaming time column so it is clear the log this came from
     | extend Duo_TimeGenerated = isotimestamp_t
 )
 on $left.TI_ipEntity == $right.access_device_ip_s
 | where TimeGenerated >= ago(ioc_lookBack)
 | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
 | where IsActive == true and ValidUntil > now()
 | extend Description = tostring(parse_json(Data).description)
 | extend ActivityGroupNames = extract(@"ActivityGroup:(\S+)", 1, tostring(parse_json(Data).labels))
 | project LatestIndicatorTime, Description, ActivityGroupNames, Id, ValidUntil, Confidence, Duo_TimeGenerated,
 TI_ipEntity, user_name_s, factor_s, result_s, application_name_s, event_type_s, txid_g, user_key_s, access_device_ip_s, access_device_location_city_s, access_device_location_state_s, access_device_location_country_s//, ThreatType, Url
 | extend timestamp = Duo_TimeGenerated, Name = tostring(split(user_name_s, '@', 0)[0]), UPNSuffix = tostring(split(user_name_s, '@', 1)[0])

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence (NEW)/Analytic Rules/IPEntity_DuoSecurity.yaml
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  ThreatIntelIndicators
  //extract key part of kv pair
       | extend IndicatorType = replace(@"\[|\]|\""", "", tostring(split(ObservableKey, ":", 0)))
       | where isnotempty(IndicatorType) and IndicatorType == "ipv4-addr"
       | extend NetworkSourceIP = toupper(ObservableValue)
       | extend TrafficLightProtocolLevel = tostring(parse_json(AdditionalFields).TLPLevel)
  // Picking up only IOC's that contain the entities we want
  | where isnotempty(NetworkSourceIP)
  | where TimeGenerated >= ago(ioc_lookBack)
  // As there is potentially more than 1 indicator type for matching IP, taking NetworkIP first, then others if that is empty.
  // Taking the first non-empty value based on potential IOC match availability
  | extend TI_ipEntity = iff(isnotempty(NetworkSourceIP), NetworkSourceIP, NetworkSourceIP)
  | extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
  | where IsActive == true and ValidUntil > now()
   | join (
       DuoSecurityAuthentication_CL
       | where TimeGenerated >= ago(dt_lookBack)
       | where isnotempty(access_device_ip_s)
       // renaming time column so it is clear the log this came from
       | extend Duo_TimeGenerated = isotimestamp_t
   )
   on $left.TI_ipEntity == $right.access_device_ip_s
   | where TimeGenerated >= ago(ioc_lookBack)
   | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
   | where IsActive == true and ValidUntil > now()
   | extend Description = tostring(parse_json(Data).description)
   | extend ActivityGroupNames = extract(@"ActivityGroup:(\S+)", 1, tostring(parse_json(Data).labels))
   | project LatestIndicatorTime, Description, ActivityGroupNames, Id, ValidUntil, Confidence, Duo_TimeGenerated,
   TI_ipEntity, user_name_s, factor_s, result_s, application_name_s, event_type_s, txid_g, user_key_s, access_device_ip_s, access_device_location_city_s, access_device_location_state_s, access_device_location_country_s//, ThreatType, Url
   | extend timestamp = Duo_TimeGenerated, Name = tostring(split(user_name_s, '@', 0)[0]), UPNSuffix = tostring(split(user_name_s, '@', 1)[0])  
description: |
    'This query maps any IP indicators of compromise (IOCs) from threat intelligence (TI), by searching for matches in DuoSecurity.'
severity: Medium
requiredDataConnectors:
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: ThreatIntelligence
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: ThreatIntelligenceTaxii
- dataTypes:
  - CiscoDuo
  connectorId: CiscoDuoSecurity
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: MicrosoftDefenderThreatIntelligence
name: TI Map IP Entity to Duo Security
triggerThreshold: 0
tactics:
- CommandAndControl
version: 1.0.6
relevantTechniques:
- T1071
triggerOperator: gt
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: user_name_s
    identifier: FullName
  - columnName: Name
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
- entityType: IP
  fieldMappings:
  - columnName: access_device_ip_s
    identifier: Address
id: 4988c238-a118-442c-80bd-6c689a1b2e97
kind: Scheduled
queryFrequency: 1h
queryPeriod: 14d

{
  "$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/4988c238-a118-442c-80bd-6c689a1b2e97')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/4988c238-a118-442c-80bd-6c689a1b2e97')]",
      "properties": {
        "alertRuleTemplateName": "4988c238-a118-442c-80bd-6c689a1b2e97",
        "customDetails": null,
        "description": "'This query maps any IP indicators of compromise (IOCs) from threat intelligence (TI), by searching for matches in DuoSecurity.'\n",
        "displayName": "TI Map IP Entity to Duo Security",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "user_name_s",
                "identifier": "FullName"
              },
              {
                "columnName": "Name",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "access_device_ip_s",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence (NEW)/Analytic Rules/IPEntity_DuoSecurity.yaml",
        "query": "let dt_lookBack = 1h;\nlet ioc_lookBack = 14d;\nThreatIntelIndicators\n//extract key part of kv pair\n     | extend IndicatorType = replace(@\"\\[|\\]|\\\"\"\", \"\", tostring(split(ObservableKey, \":\", 0)))\n     | where isnotempty(IndicatorType) and IndicatorType == \"ipv4-addr\"\n     | extend NetworkSourceIP = toupper(ObservableValue)\n     | extend TrafficLightProtocolLevel = tostring(parse_json(AdditionalFields).TLPLevel)\n// Picking up only IOC's that contain the entities we want\n| where isnotempty(NetworkSourceIP)\n| where TimeGenerated >= ago(ioc_lookBack)\n// As there is potentially more than 1 indicator type for matching IP, taking NetworkIP first, then others if that is empty.\n// Taking the first non-empty value based on potential IOC match availability\n| extend TI_ipEntity = iff(isnotempty(NetworkSourceIP), NetworkSourceIP, NetworkSourceIP)\n| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)\n| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id\n| where IsActive == true and ValidUntil > now()\n | join (\n     DuoSecurityAuthentication_CL\n     | where TimeGenerated >= ago(dt_lookBack)\n     | where isnotempty(access_device_ip_s)\n     // renaming time column so it is clear the log this came from\n     | extend Duo_TimeGenerated = isotimestamp_t\n )\n on $left.TI_ipEntity == $right.access_device_ip_s\n | where TimeGenerated >= ago(ioc_lookBack)\n | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id\n | where IsActive == true and ValidUntil > now()\n | extend Description = tostring(parse_json(Data).description)\n | extend ActivityGroupNames = extract(@\"ActivityGroup:(\\S+)\", 1, tostring(parse_json(Data).labels))\n | project LatestIndicatorTime, Description, ActivityGroupNames, Id, ValidUntil, Confidence, Duo_TimeGenerated,\n TI_ipEntity, user_name_s, factor_s, result_s, application_name_s, event_type_s, txid_g, user_key_s, access_device_ip_s, access_device_location_city_s, access_device_location_state_s, access_device_location_country_s//, ThreatType, Url\n | extend timestamp = Duo_TimeGenerated, Name = tostring(split(user_name_s, '@', 0)[0]), UPNSuffix = tostring(split(user_name_s, '@', 1)[0])\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.0.6",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}