SpyCloud plaintext credential exposure detected

// Human-readable constant for the severity threshold used below
let severityThreshold = 20;
SpyCloudBreachWatchlistV2_CL
| where Severity == severityThreshold
// Severity alone determines this detection. mv-expand emits no rows for an empty
// array, which would silently drop exposures carrying no IP data, so substitute a
// single empty placeholder before expanding.
| extend IPList = iff(isnull(IPAddresses) or array_length(IPAddresses) == 0, dynamic([""]), IPAddresses)
| mv-expand IPAddress = IPList to typeof(string)
| extend AccountName = Username, AccountEmail = Email,
    AccountUpn = iff(isnotempty(Email), Email, Username)
| project TimeGenerated, DocumentId, SourceId, SpyCloudPublishDate, AccountEmail,
    TargetDomain, PasswordPlaintext, AccountName, AccountUpn, IPAddress

triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SpyCloud%20Enterprise%20Protection%20CCF/Analytic%20Rules/AR_Breached_Users_20.yaml
triggerThreshold: 0
query: |
  // Human-readable constant for the severity threshold used below
  let severityThreshold = 20;
  SpyCloudBreachWatchlistV2_CL
  | where Severity == severityThreshold
  // Severity alone determines this detection. mv-expand emits no rows for an empty
  // array, which would silently drop exposures carrying no IP data, so substitute a
  // single empty placeholder before expanding.
  | extend IPList = iff(isnull(IPAddresses) or array_length(IPAddresses) == 0, dynamic([""]), IPAddresses)
  | mv-expand IPAddress = IPList to typeof(string)
  | extend AccountName = Username, AccountEmail = Email,
      AccountUpn = iff(isnotempty(Email), Email, Username)
  | project TimeGenerated, DocumentId, SourceId, SpyCloudPublishDate, AccountEmail,
      TargetDomain, PasswordPlaintext, AccountName, AccountUpn, IPAddress
kind: Scheduled
relevantTechniques:
- T1555
version: 1.0.0
tactics:
- CredentialAccess
id: a25eba0e-ff42-4c97-a379-d76bdb2aa1e3
queryPeriod: 1h
queryFrequency: 1h
severity: High
name: SpyCloud plaintext credential exposure detected
customDetails:
  DocumentID: DocumentId
  SpyCloudPublishDate: SpyCloudPublishDate
requiredDataConnectors:
- connectorId: SpyCloudEnterpriseProtectionCCF
  dataTypes:
  - SpyCloudBreachWatchlistV2_CL
description: |
  #DONT_CORR#
  'Identifies user accounts exposed with a plaintext password in a third-party data breach.
  Unremediated exposures of this kind can lead directly to account takeover.'
eventGroupingSettings:
  aggregationKind: SingleAlert
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: AccountUpn
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPAddress
- entityType: Mailbox
  fieldMappings:
  - identifier: MailboxPrimaryAddress
    columnName: AccountEmail

{
  "$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/a25eba0e-ff42-4c97-a379-d76bdb2aa1e3')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a25eba0e-ff42-4c97-a379-d76bdb2aa1e3')]",
      "properties": {
        "alertRuleTemplateName": "a25eba0e-ff42-4c97-a379-d76bdb2aa1e3",
        "customDetails": {
          "DocumentID": "DocumentId",
          "SpyCloudPublishDate": "SpyCloudPublishDate"
        },
        "description": "#DONT_CORR#\n'Identifies user accounts exposed with a plaintext password in a third-party data breach.\nUnremediated exposures of this kind can lead directly to account takeover.'\n",
        "displayName": "SpyCloud plaintext credential exposure detected",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountUpn",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPAddress",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Mailbox",
            "fieldMappings": [
              {
                "columnName": "AccountEmail",
                "identifier": "MailboxPrimaryAddress"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SpyCloud%20Enterprise%20Protection%20CCF/Analytic%20Rules/AR_Breached_Users_20.yaml",
        "query": "// Human-readable constant for the severity threshold used below\nlet severityThreshold = 20;\nSpyCloudBreachWatchlistV2_CL\n| where Severity == severityThreshold\n// Severity alone determines this detection. mv-expand emits no rows for an empty\n// array, which would silently drop exposures carrying no IP data, so substitute a\n// single empty placeholder before expanding.\n| extend IPList = iff(isnull(IPAddresses) or array_length(IPAddresses) == 0, dynamic([\"\"]), IPAddresses)\n| mv-expand IPAddress = IPList to typeof(string)\n| extend AccountName = Username, AccountEmail = Email,\n    AccountUpn = iff(isnotempty(Email), Email, Username)\n| project TimeGenerated, DocumentId, SourceId, SpyCloudPublishDate, AccountEmail,\n    TargetDomain, PasswordPlaintext, AccountName, AccountUpn, IPAddress\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1555"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}