TI map IP entity to LastPass data

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
ThreatIntelligenceIndicator
| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
| where Active == true
// Picking up only IOC's that contain the entities we want
| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
// As there is potentially more than 1 indicator type for matching IP, taking Network IP first, then others if that is empty.
// Taking the first non-empty value based on potential IOC match availability
| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
| join (
    LastPassNativePoller_CL | where todatetime(Time_s) >= ago(dt_lookBack)
    | where Action_s != "Reporting"
    // renaming time column so it is clear the log this came from
    | extend LastPass_TimeGenerated = todatetime(Time_s)
)
on $left.TI_ipEntity == $right.IP_Address_s
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, LastPass_TimeGenerated, 
TI_ipEntity, IP_Address_s, Username_s, Action_s, Data_s, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
| extend timestamp = LastPass_TimeGenerated, AccountCustomEntity = Username_s, IPCustomEntity = IP_Address_s, URLCustomEntity = Url

description: |
    'Identifies a match in LastPass table from any IP IOC from TI'
queryFrequency: 1h
status: Available
requiredDataConnectors:
- connectorId: LastPass
  dataTypes:
  - LastPassNativePoller_CL
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
version: 1.0.0
queryPeriod: 14d
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  ThreatIntelligenceIndicator
  | where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
  | where Active == true
  // Picking up only IOC's that contain the entities we want
  | where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
  // As there is potentially more than 1 indicator type for matching IP, taking Network IP first, then others if that is empty.
  // Taking the first non-empty value based on potential IOC match availability
  | extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
  | extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
  | extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
  | join (
      LastPassNativePoller_CL | where todatetime(Time_s) >= ago(dt_lookBack)
      | where Action_s != "Reporting"
      // renaming time column so it is clear the log this came from
      | extend LastPass_TimeGenerated = todatetime(Time_s)
  )
  on $left.TI_ipEntity == $right.IP_Address_s
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, LastPass_TimeGenerated, 
  TI_ipEntity, IP_Address_s, Username_s, Action_s, Data_s, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
  | extend timestamp = LastPass_TimeGenerated, AccountCustomEntity = Username_s, IPCustomEntity = IP_Address_s, URLCustomEntity = Url  
kind: Scheduled
id: 2a723664-22c2-4d3e-bbec-5843b90166f3
eventGroupingSettings:
  aggregationKind: AlertPerResult
name: TI map IP entity to LastPass data
triggerThreshold: 0
triggerOperator: gt
relevantTechniques:
- T1485
tactics:
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/LastPass/Analytic Rules/TIMapIPEntityToLastPass.yaml
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: URLCustomEntity
    identifier: Url
  entityType: URL
severity: Medium

{
  "$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/2a723664-22c2-4d3e-bbec-5843b90166f3')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2a723664-22c2-4d3e-bbec-5843b90166f3')]",
      "properties": {
        "alertRuleTemplateName": "2a723664-22c2-4d3e-bbec-5843b90166f3",
        "customDetails": null,
        "description": "'Identifies a match in LastPass table from any IP IOC from TI'\n",
        "displayName": "TI map IP entity to LastPass data",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "URLCustomEntity",
                "identifier": "Url"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/LastPass/Analytic Rules/TIMapIPEntityToLastPass.yaml",
        "query": "let dt_lookBack = 1h;\nlet ioc_lookBack = 14d;\nThreatIntelligenceIndicator\n| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()\n| where Active == true\n// Picking up only IOC's that contain the entities we want\n| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)\n// As there is potentially more than 1 indicator type for matching IP, taking Network IP 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(NetworkIP), NetworkIP, NetworkDestinationIP)\n| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)\n| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)\n| join (\n    LastPassNativePoller_CL | where todatetime(Time_s) >= ago(dt_lookBack)\n    | where Action_s != \"Reporting\"\n    // renaming time column so it is clear the log this came from\n    | extend LastPass_TimeGenerated = todatetime(Time_s)\n)\non $left.TI_ipEntity == $right.IP_Address_s\n| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, LastPass_TimeGenerated, \nTI_ipEntity, IP_Address_s, Username_s, Action_s, Data_s, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress\n| extend timestamp = LastPass_TimeGenerated, AccountCustomEntity = Username_s, IPCustomEntity = IP_Address_s, URLCustomEntity = Url\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1485"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}