Palo Alto Prisma Cloud - Anomalous access key usage

let threshold = 10;
PaloAltoPrismaCloud
| where ResourceType =~ 'Login'
| where EventResult =~ 'Failed'
| where EventMessage has 'access key'
| summarize count() by UserName, bin(TimeGenerated, 5m)
| where count_ > threshold
| extend AccountCustomEntity = UserName

relevantTechniques:
- T1078
name: Palo Alto Prisma Cloud - Anomalous access key usage
requiredDataConnectors:
- dataTypes:
  - PaloAltoPrismaCloud
  connectorId: PaloAltoPrismaCloud
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
triggerThreshold: 0
id: bd602b90-f7f9-4ae9-bf8c-3672a24deb39
tactics:
- InitialAccess
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudAnomalousApiKeyActivity.yaml
queryPeriod: 1h
kind: Scheduled
queryFrequency: 1h
severity: Medium
status: Available
description: |
    'Detects anomalous API key usage activity.'
query: |
  let threshold = 10;
  PaloAltoPrismaCloud
  | where ResourceType =~ 'Login'
  | where EventResult =~ 'Failed'
  | where EventMessage has 'access key'
  | summarize count() by UserName, bin(TimeGenerated, 5m)
  | where count_ > threshold
  | extend AccountCustomEntity = UserName  
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/bd602b90-f7f9-4ae9-bf8c-3672a24deb39')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/bd602b90-f7f9-4ae9-bf8c-3672a24deb39')]",
      "properties": {
        "alertRuleTemplateName": "bd602b90-f7f9-4ae9-bf8c-3672a24deb39",
        "customDetails": null,
        "description": "'Detects anomalous API key usage activity.'\n",
        "displayName": "Palo Alto Prisma Cloud - Anomalous access key usage",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudAnomalousApiKeyActivity.yaml",
        "query": "let threshold = 10;\nPaloAltoPrismaCloud\n| where ResourceType =~ 'Login'\n| where EventResult =~ 'Failed'\n| where EventMessage has 'access key'\n| summarize count() by UserName, bin(TimeGenerated, 5m)\n| where count_ > threshold\n| extend AccountCustomEntity = UserName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1078"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}