Trend Micro CAS - Ransomware infection

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Id	0bec3f9a-dbe9-4b4c-9ff6-498d64bbef90
Rulename	Trend Micro CAS - Ransomware infection
Description	Triggeres when ransomware was detected.
Severity	High
Tactics	Impact
Techniques	T1486
Required data connectors	TrendMicroCAS
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Trend Micro Cloud App Security/Analytic Rules/TrendMicroCASRansomwareOnHost.yaml
Version	1.0.1
Arm template	0bec3f9a-dbe9-4b4c-9ff6-498d64bbef90.json

KQL

TrendMicroCAS
| where EventType =~ 'ransomware'
| extend AccountCustomEntity = DstUserName, MalwareCustomEntity = RansomwareName

YAML

name: Trend Micro CAS - Ransomware infection
kind: Scheduled
tactics:
- Impact
triggerThreshold: 0
triggerOperator: gt
version: 1.0.1
status: Available
queryFrequency: 5m
id: 0bec3f9a-dbe9-4b4c-9ff6-498d64bbef90
requiredDataConnectors:
- connectorId: TrendMicroCAS
  dataTypes:
  - TrendMicroCAS
relevantTechniques:
- T1486
description: |
    'Triggeres when ransomware was detected.'
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
- entityType: Malware
  fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Trend Micro Cloud App Security/Analytic Rules/TrendMicroCASRansomwareOnHost.yaml
queryPeriod: 5m
severity: High
query: |
  TrendMicroCAS
  | where EventType =~ 'ransomware'
  | extend AccountCustomEntity = DstUserName, MalwareCustomEntity = RansomwareName

ARM