Trend Micro CAS - Multiple infected users

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Id	65c2a6fe-ff7b-46b0-9278-61265f77f3bc
Rulename	Trend Micro CAS - Multiple infected users
Description	Detects when same malware was detected for multiple user account.
Severity	High
Tactics	InitialAccess
Techniques	T1566
Required data connectors	TrendMicroCAS
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/Trend Micro Cloud App Security/Analytic Rules/TrendMicroCASVAOutbreak.yaml
Version	1.0.1
Arm template	65c2a6fe-ff7b-46b0-9278-61265f77f3bc.json

KQL

TrendMicroCAS
| where EventType has_all ('virtual', 'analyzer')
| where isnotempty(VirusName)
| summarize count() by DstUserName, VirusName, bin(TimeGenerated, 15m)
| where count_ >= 2
| extend AccountCustomEntity = DstUserName, MalwareCustomEntity = VirusName

YAML

name: Trend Micro CAS - Multiple infected users
query: |
  TrendMicroCAS
  | where EventType has_all ('virtual', 'analyzer')
  | where isnotempty(VirusName)
  | summarize count() by DstUserName, VirusName, bin(TimeGenerated, 15m)
  | where count_ >= 2
  | extend AccountCustomEntity = DstUserName, MalwareCustomEntity = VirusName  
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
- entityType: Malware
  fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
queryPeriod: 1h
version: 1.0.1
tactics:
- InitialAccess
triggerOperator: gt
kind: Scheduled
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Trend Micro Cloud App Security/Analytic Rules/TrendMicroCASVAOutbreak.yaml
relevantTechniques:
- T1566
id: 65c2a6fe-ff7b-46b0-9278-61265f77f3bc
severity: High
requiredDataConnectors:
- connectorId: TrendMicroCAS
  dataTypes:
  - TrendMicroCAS
status: Available
description: |
    'Detects when same malware was detected for multiple user account.'
queryFrequency: 1h

ARM