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

ARM