Dataverse - Login from IP in the block list

// Use static IP address or CIDR list specified in the
// NetworkAddresses watchlist (from watchlist template)
// with tag "BlockDataverse"
let query_frequency = 1h;
let blocked_networks = MSBizAppsNetworkAddresses()
    | where Tags has "BlockDataverse"
    | summarize by IPSubnet;
let watchlist_entries_count = toscalar (blocked_networks
    | summarize count());
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
| evaluate ipv4_lookup(blocked_networks, ClientIp, IPSubnet)
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| project
    FirstEvent,
    UserId,
    ClientIp,
    Message,
    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
kind: Scheduled
name: Dataverse - Login from IP in the block list
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Login from IP in the block list.yaml
tactics:
- InitialAccess
triggerThreshold: 0
version: 3.2.0
requiredDataConnectors:
- connectorId: Dataverse
  dataTypes:
  - DataverseActivity
status: Available
description: Identifies Dataverse sign-in activity from IPv4 addresses which are on a predefined block list. Blocked network ranges are maintained in the NetworkAddresses watchlist template.
queryPeriod: 1d
severity: High
queryFrequency: 1h
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertDisplayNameFormat: 'Dataverse - Login from IP in the block list at {{InstanceUrl}} '
  alertDescriptionFormat: Sign-in activity by {{UserId}} in {{InstanceUrl}} was detected from an IP {{ClientIp}} on the block list.
relevantTechniques:
- T1190
- T1133
- T1078
id: 666fef96-1bb8-4abf-ad72-e5cb49561381
triggerOperator: gt
query: |
  // Use static IP address or CIDR list specified in the
  // NetworkAddresses watchlist (from watchlist template)
  // with tag "BlockDataverse"
  let query_frequency = 1h;
  let blocked_networks = MSBizAppsNetworkAddresses()
      | where Tags has "BlockDataverse"
      | summarize by IPSubnet;
  let watchlist_entries_count = toscalar (blocked_networks
      | summarize count());
  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
  | evaluate ipv4_lookup(blocked_networks, ClientIp, IPSubnet)
  | extend
      CloudAppId = int(32780),
      AccountName = tostring(split(UserId, '@')[0]),
      UPNSuffix = tostring(split(UserId, '@')[1])
  | project
      FirstEvent,
      UserId,
      ClientIp,
      Message,
      InstanceUrl,
      CloudAppId,
      AccountName,
      UPNSuffix  

{
  "$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/666fef96-1bb8-4abf-ad72-e5cb49561381')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/666fef96-1bb8-4abf-ad72-e5cb49561381')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Sign-in activity by {{UserId}} in {{InstanceUrl}} was detected from an IP {{ClientIp}} on the block list.",
          "alertDisplayNameFormat": "Dataverse - Login from IP in the block list at {{InstanceUrl}} "
        },
        "alertRuleTemplateName": "666fef96-1bb8-4abf-ad72-e5cb49561381",
        "customDetails": null,
        "description": "Identifies Dataverse sign-in activity from IPv4 addresses which are on a predefined block list. Blocked network ranges are maintained in the NetworkAddresses watchlist template.",
        "displayName": "Dataverse - Login from IP in the block 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 Business Applications/Analytic Rules/Dataverse - Login from IP in the block list.yaml",
        "query": "// Use static IP address or CIDR list specified in the\n// NetworkAddresses watchlist (from watchlist template)\n// with tag \"BlockDataverse\"\nlet query_frequency = 1h;\nlet blocked_networks = MSBizAppsNetworkAddresses()\n    | where Tags has \"BlockDataverse\"\n    | summarize by IPSubnet;\nlet watchlist_entries_count = toscalar (blocked_networks\n    | summarize count());\nDataverseActivity\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| evaluate ipv4_lookup(blocked_networks, ClientIp, IPSubnet)\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    Message,\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"
    }
  ]
}