Lumen TI IPAddress in OfficeActivity

let dt_lookBack = 1d;  // Data lookback for OfficeActivity
let ioc_lookBack = 14d; // TI lookback
let IP_Indicators = ThreatIntelIndicators
  | where TimeGenerated >= ago(ioc_lookBack)
  | where IsActive == true and ValidUntil > now()
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
  | where SourceSystem == 'Lumen'
  | where ObservableKey == 'ipv4-addr:value'
  | extend TI_ipEntity = ObservableValue
  | where ipv4_is_private(TI_ipEntity) == false and TI_ipEntity !startswith 'fe80' and TI_ipEntity !startswith '::' and TI_ipEntity !startswith '127.';
IP_Indicators
| join kind=innerunique (
    OfficeActivity
    | where TimeGenerated >= ago(dt_lookBack)
    | extend OA_ipEntity = ClientIP
    | extend OfficeActivity_TimeGenerated = TimeGenerated
  ) on $left.TI_ipEntity == $right.OA_ipEntity
| where OfficeActivity_TimeGenerated < ValidUntil
| summarize arg_max(OfficeActivity_TimeGenerated, *), StartTime = min(OfficeActivity_TimeGenerated), EndTime = max(OfficeActivity_TimeGenerated) by Id, OA_ipEntity
| project timestamp = EndTime, StartTime, EndTime, UserId, ClientIP, Operation, Id, Tags, ValidUntil, Confidence, TI_ipEntity, OA_ipEntity, Type

queryFrequency: 4h
description: |
    This query maps Lumen IP indicators of compromise (IOCs) from threat intelligence (TI), by searching for matches in OfficeActivity.
queryPeriod: 14d
name: Lumen TI IPAddress in OfficeActivity
severity: Medium
tactics:
- CommandAndControl
query: |
  let dt_lookBack = 1d;  // Data lookback for OfficeActivity
  let ioc_lookBack = 14d; // TI lookback
  let IP_Indicators = ThreatIntelIndicators
    | where TimeGenerated >= ago(ioc_lookBack)
    | where IsActive == true and ValidUntil > now()
    | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
    | where SourceSystem == 'Lumen'
    | where ObservableKey == 'ipv4-addr:value'
    | extend TI_ipEntity = ObservableValue
    | where ipv4_is_private(TI_ipEntity) == false and TI_ipEntity !startswith 'fe80' and TI_ipEntity !startswith '::' and TI_ipEntity !startswith '127.';
  IP_Indicators
  | join kind=innerunique (
      OfficeActivity
      | where TimeGenerated >= ago(dt_lookBack)
      | extend OA_ipEntity = ClientIP
      | extend OfficeActivity_TimeGenerated = TimeGenerated
    ) on $left.TI_ipEntity == $right.OA_ipEntity
  | where OfficeActivity_TimeGenerated < ValidUntil
  | summarize arg_max(OfficeActivity_TimeGenerated, *), StartTime = min(OfficeActivity_TimeGenerated), EndTime = max(OfficeActivity_TimeGenerated) by Id, OA_ipEntity
  | project timestamp = EndTime, StartTime, EndTime, UserId, ClientIP, Operation, Id, Tags, ValidUntil, Confidence, TI_ipEntity, OA_ipEntity, Type  
id: 0e96c419-68eb-4235-947e-7e86e136cda0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Lumen Defender Threat Feed/Analytic Rules/Lumen_IPEntity_OfficeActivity.yaml
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: OA_ipEntity
suppressionDuration: 5h
triggerThreshold: 0
requiredDataConnectors:
- connectorId: LumenThreatFeedConnector
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligenceUploadIndicatorsAPI
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: Office365
  dataTypes:
  - OfficeActivity
version: 1.0.0
suppressionEnabled: true
triggerOperator: gt
displayName: Lumen TI IPAddress in OfficeActivity
kind: Scheduled
relevantTechniques:
- T1071

{
  "$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/0e96c419-68eb-4235-947e-7e86e136cda0')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0e96c419-68eb-4235-947e-7e86e136cda0')]",
      "properties": {
        "alertRuleTemplateName": "0e96c419-68eb-4235-947e-7e86e136cda0",
        "customDetails": null,
        "description": "This query maps Lumen IP indicators of compromise (IOCs) from threat intelligence (TI), by searching for matches in OfficeActivity.\n",
        "displayName": "Lumen TI IPAddress in OfficeActivity",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "OA_ipEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Lumen Defender Threat Feed/Analytic Rules/Lumen_IPEntity_OfficeActivity.yaml",
        "query": "let dt_lookBack = 1d;  // Data lookback for OfficeActivity\nlet ioc_lookBack = 14d; // TI lookback\nlet IP_Indicators = ThreatIntelIndicators\n  | where TimeGenerated >= ago(ioc_lookBack)\n  | where IsActive == true and ValidUntil > now()\n  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id\n  | where SourceSystem == 'Lumen'\n  | where ObservableKey == 'ipv4-addr:value'\n  | extend TI_ipEntity = ObservableValue\n  | where ipv4_is_private(TI_ipEntity) == false and TI_ipEntity !startswith 'fe80' and TI_ipEntity !startswith '::' and TI_ipEntity !startswith '127.';\nIP_Indicators\n| join kind=innerunique (\n    OfficeActivity\n    | where TimeGenerated >= ago(dt_lookBack)\n    | extend OA_ipEntity = ClientIP\n    | extend OfficeActivity_TimeGenerated = TimeGenerated\n  ) on $left.TI_ipEntity == $right.OA_ipEntity\n| where OfficeActivity_TimeGenerated < ValidUntil\n| summarize arg_max(OfficeActivity_TimeGenerated, *), StartTime = min(OfficeActivity_TimeGenerated), EndTime = max(OfficeActivity_TimeGenerated) by Id, OA_ipEntity\n| project timestamp = EndTime, StartTime, EndTime, UserId, ClientIP, Operation, Id, Tags, ValidUntil, Confidence, TI_ipEntity, OA_ipEntity, Type\n",
        "queryFrequency": "PT4H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": true,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}