Dataverse - Suspicious use of TDS endpoint

let query_frequency = 1h;
let query_lookback = 14d;
DataverseActivity
| where TimeGenerated >= ago(query_frequency)
| where Message == 'ExecutePowerBISql'
| summarize FirstEvent = min(TimeGenerated) by UserId, ClientIp, InstanceUrl
| join kind=inner(
    DataverseActivity
    | where TimeGenerated >= ago(query_lookback)
    | where Message == 'ExecutePowerBISql'
    | summarize UniqueUsers = dcount(UserId, 4) by InstanceUrl)
    on InstanceUrl
| where UniqueUsers == 1
| join kind=inner (
    SecurityAlert
    | where Entities has ('"Type":"ip"')
    | project AlertName, SystemAlertId, Entities
    | mv-expand todynamic(Entities)
    | where Entities.Type == "ip"
    | extend IPAddress = tostring(Entities.Address)
    | summarize SystemAlerts = make_set(SystemAlertId, 100), Alerts = make_set(AlertName, 100) by IPAddress)
    on $left.ClientIp == $right.IPAddress
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| join kind = inner (
    SecurityAlert
    | where Entities has ('Type":"account"')
    | project AlertName, SystemAlertId, Entities
    | mv-expand todynamic(Entities)
    | where Entities.Type == "account"
    | extend
        UPNSuffix = tostring(Entities.UPNSuffix),
        AccountName = tostring(Entities.Name)
    | summarize SystemAlerts = make_set(SystemAlertId, 100), Alerts = make_set(AlertName, 100) by AccountName, UPNSuffix
    | where isnotempty(AccountName) and isnotempty(UPNSuffix))
    on AccountName, UPNSuffix
| summarize SystemAlerts = make_set(SystemAlerts, 100), Alerts = make_set(Alerts, 100) by FirstEvent, UserId, ClientIp, InstanceUrl, AccountName, UPNSuffix
| extend CloudAppId = int(32780)
| project
    FirstEvent,
    UserId,
    ClientIp,
    InstanceUrl,
    Alerts,
    SystemAlerts,
    CloudAppId,
    AccountName,
    UPNSuffix

status: Available
queryFrequency: 1h
id: d875af10-6bb9-4d6a-a6e4-78439a98bf4b
tactics:
- Exfiltration
- InitialAccess
entityMappings:
- fieldMappings:
  - columnName: AccountName
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: CloudAppId
    identifier: AppId
  - columnName: InstanceUrl
    identifier: InstanceName
  entityType: CloudApplication
- fieldMappings:
  - columnName: ClientIp
    identifier: Address
  entityType: IP
requiredDataConnectors:
- connectorId: Dataverse
  dataTypes:
  - DataverseActivity
- connectorId: AzureActiveDirectoryIdentityProtection
  dataTypes:
  - SecurityAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Suspicious use of TDS endpoint.yaml
alertDetailsOverride:
  alertDisplayNameFormat: 'Dataverse - Suspicious use of TDS endpoint in {{InstanceUrl}} '
  alertDescriptionFormat: 'The TDS endpoint was used to query Dataverse instance {{InstanceUrl}} . The use of this protocol was not seen previously and the following alerts were associated with the caller: {{Alerts}}'
eventGroupingSettings:
  aggregationKind: AlertPerResult
query: |
  let query_frequency = 1h;
  let query_lookback = 14d;
  DataverseActivity
  | where TimeGenerated >= ago(query_frequency)
  | where Message == 'ExecutePowerBISql'
  | summarize FirstEvent = min(TimeGenerated) by UserId, ClientIp, InstanceUrl
  | join kind=inner(
      DataverseActivity
      | where TimeGenerated >= ago(query_lookback)
      | where Message == 'ExecutePowerBISql'
      | summarize UniqueUsers = dcount(UserId, 4) by InstanceUrl)
      on InstanceUrl
  | where UniqueUsers == 1
  | join kind=inner (
      SecurityAlert
      | where Entities has ('"Type":"ip"')
      | project AlertName, SystemAlertId, Entities
      | mv-expand todynamic(Entities)
      | where Entities.Type == "ip"
      | extend IPAddress = tostring(Entities.Address)
      | summarize SystemAlerts = make_set(SystemAlertId, 100), Alerts = make_set(AlertName, 100) by IPAddress)
      on $left.ClientIp == $right.IPAddress
  | extend
      CloudAppId = int(32780),
      AccountName = tostring(split(UserId, '@')[0]),
      UPNSuffix = tostring(split(UserId, '@')[1])
  | join kind = inner (
      SecurityAlert
      | where Entities has ('Type":"account"')
      | project AlertName, SystemAlertId, Entities
      | mv-expand todynamic(Entities)
      | where Entities.Type == "account"
      | extend
          UPNSuffix = tostring(Entities.UPNSuffix),
          AccountName = tostring(Entities.Name)
      | summarize SystemAlerts = make_set(SystemAlertId, 100), Alerts = make_set(AlertName, 100) by AccountName, UPNSuffix
      | where isnotempty(AccountName) and isnotempty(UPNSuffix))
      on AccountName, UPNSuffix
  | summarize SystemAlerts = make_set(SystemAlerts, 100), Alerts = make_set(Alerts, 100) by FirstEvent, UserId, ClientIp, InstanceUrl, AccountName, UPNSuffix
  | extend CloudAppId = int(32780)
  | project
      FirstEvent,
      UserId,
      ClientIp,
      InstanceUrl,
      Alerts,
      SystemAlerts,
      CloudAppId,
      AccountName,
      UPNSuffix  
kind: Scheduled
relevantTechniques:
- T1048
- T1190
name: Dataverse - Suspicious use of TDS endpoint
triggerThreshold: 0
queryPeriod: 14d
triggerOperator: gt
description: Identifies Dataverse TDS (Tabular Data Stream) protocol based queries where the source user or IP address has recent security alerts and the TDS protocol has not been used previously in the target environment.
severity: Low
version: 3.2.0