Palo Alto Prisma Cloud - High risk score alert

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Id	617b02d8-0f47-4f3c-afed-1926a45e7b28
Rulename	Palo Alto Prisma Cloud - High risk score alert
Description	Detects alerts with high risk score value.
Severity	Medium
Tactics	InitialAccess
Techniques	T1133
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/PaloAltoPrismaCloudHighRiskScoreAlert.yaml
Version	1.0.1
Arm template	617b02d8-0f47-4f3c-afed-1926a45e7b28.json

KQL

PaloAltoPrismaCloud
| where Reason =~ 'NEW_ALERT'
| where Status =~ 'open'
| extend r_score = 0.85 * toint(RiskDetailRiskScoreMaxScore)
| extend i_RiskDetailRiskScoreScore = toint(RiskDetailRiskScoreScore)
| where i_RiskDetailRiskScoreScore > r_score
| extend AccountCustomEntity = UserName

YAML

entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
severity: Medium
name: Palo Alto Prisma Cloud - High risk score alert
triggerThreshold: 0
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PaloAltoPrismaCloud/Analytic Rules/PaloAltoPrismaCloudHighRiskScoreAlert.yaml
id: 617b02d8-0f47-4f3c-afed-1926a45e7b28
kind: Scheduled
status: Available
queryFrequency: 1h
relevantTechniques:
- T1133
description: |
    'Detects alerts with high risk score value.'
query: |
  PaloAltoPrismaCloud
  | where Reason =~ 'NEW_ALERT'
  | where Status =~ 'open'
  | extend r_score = 0.85 * toint(RiskDetailRiskScoreMaxScore)
  | extend i_RiskDetailRiskScoreScore = toint(RiskDetailRiskScoreScore)
  | where i_RiskDetailRiskScoreScore > r_score
  | extend AccountCustomEntity = UserName  
version: 1.0.1
tactics:
- InitialAccess
queryPeriod: 1h
requiredDataConnectors:
- dataTypes:
  - PaloAltoPrismaCloud
  connectorId: PaloAltoPrismaCloud

ARM