Palo Alto Prisma Cloud - Anomalous access key usage

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Id	bd602b90-f7f9-4ae9-bf8c-3672a24deb39
Rulename	Palo Alto Prisma Cloud - Anomalous access key usage
Description	Detects anomalous API key usage activity.
Severity	Medium
Tactics	InitialAccess
Techniques	T1078
Required data connectors	PaloAltoPrismaCloud
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudAnomalousApiKeyActivity.yaml
Version	1.0.1
Arm template	bd602b90-f7f9-4ae9-bf8c-3672a24deb39.json

KQL

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

YAML

relevantTechniques:
- T1078
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
version: 1.0.1
id: bd602b90-f7f9-4ae9-bf8c-3672a24deb39
severity: Medium
kind: Scheduled
queryFrequency: 1h
description: |
    'Detects anomalous API key usage activity.'
requiredDataConnectors:
- connectorId: PaloAltoPrismaCloud
  dataTypes:
  - PaloAltoPrismaCloud
triggerOperator: gt
name: Palo Alto Prisma Cloud - Anomalous access key usage
tactics:
- InitialAccess
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudAnomalousApiKeyActivity.yaml
triggerThreshold: 0
queryPeriod: 1h
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  
status: Available

ARM