SlackAudit - Multiple failed logins for user

let threshold = 10;
SlackAudit
| where DvcAction in~ ('user_login_failed')
| summarize FailedLogins = count() by SrcUserName, bucket = bin(TimeGenerated, 5m)
| where FailedLogins > threshold
| extend AccountCustomEntity = SrcUserName
| project SrcUserName, bucket, FailedLogins, AccountCustomEntity

requiredDataConnectors:
- dataTypes:
  - SlackAudit_CL
  connectorId: SlackAuditAPI
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic%20Rules/SlackAuditMultipleFailedLoginsForUser.yaml
version: 1.0.1
status: Available
customDetails:
  FailedLogins: FailedLogins
  TimeBucket: bucket
  UserAccount: SrcUserName
queryFrequency: 1h
query: |
  let threshold = 10;
  SlackAudit
  | where DvcAction in~ ('user_login_failed')
  | summarize FailedLogins = count() by SrcUserName, bucket = bin(TimeGenerated, 5m)
  | where FailedLogins > threshold
  | extend AccountCustomEntity = SrcUserName
  | project SrcUserName, bucket, FailedLogins, AccountCustomEntity
tactics:
- CredentialAccess
relevantTechniques:
- T1110
id: 93a91c37-032c-4380-847c-957c001957ad
triggerThreshold: 0
triggerOperator: gt
name: SlackAudit - Multiple failed logins for user
queryPeriod: 1h
severity: Medium
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
  entityType: Account
kind: Scheduled
description: |
  'Identifies multiple failed Slack logins for a user account within a short time window, which may indicate password
  guessing or brute-force activity.'

{
  "$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/93a91c37-032c-4380-847c-957c001957ad')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/93a91c37-032c-4380-847c-957c001957ad')]",
      "properties": {
        "alertRuleTemplateName": "93a91c37-032c-4380-847c-957c001957ad",
        "customDetails": {
          "FailedLogins": "FailedLogins",
          "TimeBucket": "bucket",
          "UserAccount": "SrcUserName"
        },
        "description": "'Identifies multiple failed Slack logins for a user account within a short time window, which may indicate password\nguessing or brute-force activity.'\n",
        "displayName": "SlackAudit - Multiple failed logins for user",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic%20Rules/SlackAuditMultipleFailedLoginsForUser.yaml",
        "query": "let threshold = 10;\nSlackAudit\n| where DvcAction in~ ('user_login_failed')\n| summarize FailedLogins = count() by SrcUserName, bucket = bin(TimeGenerated, 5m)\n| where FailedLogins > threshold\n| extend AccountCustomEntity = SrcUserName\n| project SrcUserName, bucket, FailedLogins, AccountCustomEntity\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1110"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}