End-user consent stopped due to risk-based consent

AuditLogs
  | where OperationName has "Consent to application"
  | where Result =~ "failure"
  | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
  | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
  | extend InitiatingIPAddress = tostring(InitiatedBy.user.ipAddress)
  | extend userAgent = iif(AdditionalDetails[0].key == "User-Agent", tostring(AdditionalDetails[0].value), tostring(AdditionalDetails[1].value))
  | where isnotempty(TargetResources)
  | extend TargetAppName = tostring(TargetResources[0].displayName)
  | extend TargetAppId = tostring(TargetResources[0].id)
  | mv-expand TargetResources[0].modifiedProperties
  | extend TargetResources_0_modifiedProperties = columnifexists("TargetResources_0_modifiedProperties", '')
  | where isnotempty(TargetResources_0_modifiedProperties)
  | where TargetResources_0_modifiedProperties.displayName =~ "MethodExecutionResult."
  | extend TargetPropertyDisplayName = tostring(TargetResources_0_modifiedProperties.displayName)
  | extend FailureReason = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))
  | where FailureReason contains "Risky"
  | extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
  | project-reorder TimeGenerated, OperationName, Result, TargetAppName, TargetAppId, FailureReason, InitiatingUserPrincipalName, InitiatingAadUserId, InitiatingIPAddress, userAgent

relevantTechniques:
- T1078.004
name: End-user consent stopped due to risk-based consent
requiredDataConnectors:
- dataTypes:
  - AuditLogs
  connectorId: AzureActiveDirectory
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: InitiatingUserPrincipalName
  - identifier: Name
    columnName: InitiatingAccountName
  - identifier: UPNSuffix
    columnName: InitiatingAccountUPNSuffix
  entityType: Account
- fieldMappings:
  - identifier: AadUserId
    columnName: InitiatingAadUserId
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: InitiatingIPAddress
  entityType: IP
- fieldMappings:
  - identifier: AppId
    columnName: TargetAppId
  - identifier: Name
    columnName: TargetAppName
  entityType: CloudApplication
triggerThreshold: 0
id: 009b9bae-23dd-43c4-bcb9-11c4ba7c784a
tactics:
- Persistence
- PrivilegeEscalation
version: 1.1.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/End-userconsentstoppedduetorisk-basedconsent.yaml
queryPeriod: 1d
kind: Scheduled
tags:
- AADSecOpsGuide
metadata:
  categories:
    domains:
    - Security - Others
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
queryFrequency: 1d
severity: Medium
description: |
  'Detects a user's consent to an OAuth application being blocked due to it being too risky.
    These events should be investigated to understand why the user attempted to consent to the applicaiton and what other applicaitons they may have consented to.
    Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-applications#end-user-stopped-due-to-risk-based-consent'  
query: |
  AuditLogs
    | where OperationName has "Consent to application"
    | where Result =~ "failure"
    | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
    | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
    | extend InitiatingIPAddress = tostring(InitiatedBy.user.ipAddress)
    | extend userAgent = iif(AdditionalDetails[0].key == "User-Agent", tostring(AdditionalDetails[0].value), tostring(AdditionalDetails[1].value))
    | where isnotempty(TargetResources)
    | extend TargetAppName = tostring(TargetResources[0].displayName)
    | extend TargetAppId = tostring(TargetResources[0].id)
    | mv-expand TargetResources[0].modifiedProperties
    | extend TargetResources_0_modifiedProperties = columnifexists("TargetResources_0_modifiedProperties", '')
    | where isnotempty(TargetResources_0_modifiedProperties)
    | where TargetResources_0_modifiedProperties.displayName =~ "MethodExecutionResult."
    | extend TargetPropertyDisplayName = tostring(TargetResources_0_modifiedProperties.displayName)
    | extend FailureReason = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))
    | where FailureReason contains "Risky"
    | extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])
    | project-reorder TimeGenerated, OperationName, Result, TargetAppName, TargetAppId, FailureReason, InitiatingUserPrincipalName, InitiatingAadUserId, InitiatingIPAddress, userAgent  
triggerOperator: gt

{
  "$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/009b9bae-23dd-43c4-bcb9-11c4ba7c784a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/009b9bae-23dd-43c4-bcb9-11c4ba7c784a')]",
      "properties": {
        "alertRuleTemplateName": "009b9bae-23dd-43c4-bcb9-11c4ba7c784a",
        "customDetails": null,
        "description": "'Detects a user's consent to an OAuth application being blocked due to it being too risky.\n  These events should be investigated to understand why the user attempted to consent to the applicaiton and what other applicaitons they may have consented to.\n  Ref: https://docs.microsoft.com/azure/active-directory/fundamentals/security-operations-applications#end-user-stopped-due-to-risk-based-consent'\n",
        "displayName": "End-user consent stopped due to risk-based consent",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "InitiatingUserPrincipalName",
                "identifier": "FullName"
              },
              {
                "columnName": "InitiatingAccountName",
                "identifier": "Name"
              },
              {
                "columnName": "InitiatingAccountUPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "InitiatingAadUserId",
                "identifier": "AadUserId"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "InitiatingIPAddress",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "TargetAppId",
                "identifier": "AppId"
              },
              {
                "columnName": "TargetAppName",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/AuditLogs/End-userconsentstoppedduetorisk-basedconsent.yaml",
        "query": "AuditLogs\n  | where OperationName has \"Consent to application\"\n  | where Result =~ \"failure\"\n  | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)\n  | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)\n  | extend InitiatingIPAddress = tostring(InitiatedBy.user.ipAddress)\n  | extend userAgent = iif(AdditionalDetails[0].key == \"User-Agent\", tostring(AdditionalDetails[0].value), tostring(AdditionalDetails[1].value))\n  | where isnotempty(TargetResources)\n  | extend TargetAppName = tostring(TargetResources[0].displayName)\n  | extend TargetAppId = tostring(TargetResources[0].id)\n  | mv-expand TargetResources[0].modifiedProperties\n  | extend TargetResources_0_modifiedProperties = columnifexists(\"TargetResources_0_modifiedProperties\", '')\n  | where isnotempty(TargetResources_0_modifiedProperties)\n  | where TargetResources_0_modifiedProperties.displayName =~ \"MethodExecutionResult.\"\n  | extend TargetPropertyDisplayName = tostring(TargetResources_0_modifiedProperties.displayName)\n  | extend FailureReason = tostring(parse_json(tostring(TargetResources_0_modifiedProperties.newValue)))\n  | where FailureReason contains \"Risky\"\n  | extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, \"@\")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, \"@\")[1])\n  | project-reorder TimeGenerated, OperationName, Result, TargetAppName, TargetAppId, FailureReason, InitiatingUserPrincipalName, InitiatingAadUserId, InitiatingIPAddress, userAgent\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "Medium",
        "subTechniques": [
          "T1078.004"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Persistence",
          "PrivilegeEscalation"
        ],
        "tags": [
          "AADSecOpsGuide"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.1.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}