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

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  
version: 1.0.1
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Trend Micro Cloud App Security/Analytic Rules/TrendMicroCASVAOutbreak.yaml
status: Available
description: |
    'Detects when same malware was detected for multiple user account.'
queryFrequency: 1h
name: Trend Micro CAS - Multiple infected users
kind: Scheduled
triggerThreshold: 0
id: 65c2a6fe-ff7b-46b0-9278-61265f77f3bc
requiredDataConnectors:
- connectorId: TrendMicroCAS
  dataTypes:
  - TrendMicroCAS
severity: High
queryPeriod: 1h
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
- fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
  entityType: Malware
relevantTechniques:
- T1566
tactics:
- InitialAccess

ARM