Dataverse - Login from IP not in the allow list

// Use static IP address or CIDR list specified in the
// NetworkAddresses watchlist template with tag "AllowDataverse"
let allowed_networks = MSBizAppsNetworkAddresses()
    | where Tags has "AllowDataverse"
    | summarize by IPSubnet;
let query_frequency = 1h;
let watchlist_entries_count = toscalar (allowed_networks
    | summarize count());
let dataverse_signin_activity = materialize(
    DataverseActivity
    | where watchlist_entries_count > 0
    | where TimeGenerated >= ago (query_frequency)
    | where Message == "UserSignIn" and isnotempty(ClientIp)
    | summarize FirstEvent = arg_min(TimeGenerated, *) by UserId, ClientIp, InstanceUrl
    );
let authorized_ip_addresses = dataverse_signin_activity
    | evaluate ipv4_lookup(allowed_networks, ClientIp, IPSubnet);
dataverse_signin_activity
| join kind=leftanti(authorized_ip_addresses) on ClientIp
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| project
    FirstEvent,
    UserId,
    ClientIp,
    InstanceUrl,
    CloudAppId,
    AccountName,
    UPNSuffix

entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: UPNSuffix
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: ClientIp
- entityType: CloudApplication
  fieldMappings:
  - identifier: AppId
    columnName: CloudAppId
  - identifier: InstanceName
    columnName: InstanceUrl
name: Dataverse - Login from IP not in the allow list
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Business%20Applications/Analytic%20Rules/Dataverse%20-%20Login%20from%20IP%20not%20in%20the%20allow%20list.yaml
queryFrequency: 1h
triggerOperator: gt
status: Available
queryPeriod: 1d
requiredDataConnectors:
- connectorId: Dataverse
  dataTypes:
  - DataverseActivity
tactics:
- InitialAccess
query: |
  // Use static IP address or CIDR list specified in the
  // NetworkAddresses watchlist template with tag "AllowDataverse"
  let allowed_networks = MSBizAppsNetworkAddresses()
      | where Tags has "AllowDataverse"
      | summarize by IPSubnet;
  let query_frequency = 1h;
  let watchlist_entries_count = toscalar (allowed_networks
      | summarize count());
  let dataverse_signin_activity = materialize(
      DataverseActivity
      | where watchlist_entries_count > 0
      | where TimeGenerated >= ago (query_frequency)
      | where Message == "UserSignIn" and isnotempty(ClientIp)
      | summarize FirstEvent = arg_min(TimeGenerated, *) by UserId, ClientIp, InstanceUrl
      );
  let authorized_ip_addresses = dataverse_signin_activity
      | evaluate ipv4_lookup(allowed_networks, ClientIp, IPSubnet);
  dataverse_signin_activity
  | join kind=leftanti(authorized_ip_addresses) on ClientIp
  | extend
      CloudAppId = int(32780),
      AccountName = tostring(split(UserId, '@')[0]),
      UPNSuffix = tostring(split(UserId, '@')[1])
  | project
      FirstEvent,
      UserId,
      ClientIp,
      InstanceUrl,
      CloudAppId,
      AccountName,
      UPNSuffix
description: Identifies logons from IPv4 addresses not matching IPv4 subnets maintained on an allow list. This analytics rule uses the NetworkAddresses watchlist template.
severity: High
kind: Scheduled
eventGroupingSettings:
  aggregationKind: AlertPerResult
triggerThreshold: 0
id: 81c693fe-f6c4-4352-bc10-3526f6e22637
alertDetailsOverride:
  alertDescriptionFormat: Sign-in activity detected in {{InstanceUrl}} from an IP {{ClientIp}} not on the allow list.
  alertDisplayNameFormat: 'Dataverse - Login from IP not on the allow list in {{InstanceUrl}} '
version: 3.2.0
relevantTechniques:
- T1078
- T1190
- T1133

{
  "$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/81c693fe-f6c4-4352-bc10-3526f6e22637')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/81c693fe-f6c4-4352-bc10-3526f6e22637')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Sign-in activity detected in {{InstanceUrl}} from an IP {{ClientIp}} not on the allow list.",
          "alertDisplayNameFormat": "Dataverse - Login from IP not on the allow list in {{InstanceUrl}} "
        },
        "alertRuleTemplateName": "81c693fe-f6c4-4352-bc10-3526f6e22637",
        "customDetails": null,
        "description": "Identifies logons from IPv4 addresses not matching IPv4 subnets maintained on an allow list. This analytics rule uses the NetworkAddresses watchlist template.",
        "displayName": "Dataverse - Login from IP not in the allow list",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "ClientIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "CloudAppId",
                "identifier": "AppId"
              },
              {
                "columnName": "InstanceUrl",
                "identifier": "InstanceName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Business%20Applications/Analytic%20Rules/Dataverse%20-%20Login%20from%20IP%20not%20in%20the%20allow%20list.yaml",
        "query": "// Use static IP address or CIDR list specified in the\n// NetworkAddresses watchlist template with tag \"AllowDataverse\"\nlet allowed_networks = MSBizAppsNetworkAddresses()\n    | where Tags has \"AllowDataverse\"\n    | summarize by IPSubnet;\nlet query_frequency = 1h;\nlet watchlist_entries_count = toscalar (allowed_networks\n    | summarize count());\nlet dataverse_signin_activity = materialize(\n    DataverseActivity\n    | where watchlist_entries_count > 0\n    | where TimeGenerated >= ago (query_frequency)\n    | where Message == \"UserSignIn\" and isnotempty(ClientIp)\n    | summarize FirstEvent = arg_min(TimeGenerated, *) by UserId, ClientIp, InstanceUrl\n    );\nlet authorized_ip_addresses = dataverse_signin_activity\n    | evaluate ipv4_lookup(allowed_networks, ClientIp, IPSubnet);\ndataverse_signin_activity\n| join kind=leftanti(authorized_ip_addresses) on ClientIp\n| extend\n    CloudAppId = int(32780),\n    AccountName = tostring(split(UserId, '@')[0]),\n    UPNSuffix = tostring(split(UserId, '@')[1])\n| project\n    FirstEvent,\n    UserId,\n    ClientIp,\n    InstanceUrl,\n    CloudAppId,\n    AccountName,\n    UPNSuffix\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P1D",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1078",
          "T1133",
          "T1190"
        ],
        "templateVersion": "3.2.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}