Acronis - Multiple Endpoints Infected by Ransomware

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Id	a783ade7-bf43-416d-b809-8f5b06d87790
Rulename	Acronis - Multiple Endpoints Infected by Ransomware
Description	Detects when three or more distinct endpoints report ransomware detections within a single day.
Severity	High
Tactics	Impact
Techniques	T1486
Kind	Scheduled
Query frequency	1h
Query period	1d
Trigger threshold	2
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisMultipleEndpointsInfectedByRansomware.yaml
Version	1.0.0
Arm template	a783ade7-bf43-416d-b809-8f5b06d87790.json

KQL

CommonSecurityLog
| where DeviceVendor == "Acronis"
| where DeviceEventClassID == "ActiveProtectionBlocksSuspiciousActivity"
| summarize ActiveProtectionBlocksSuspiciousActivity = count() by DeviceName

YAML

requiredDataConnectors: []
description: Detects when three or more distinct endpoints report ransomware detections within a single day.
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisMultipleEndpointsInfectedByRansomware.yaml
query: |
  CommonSecurityLog
  | where DeviceVendor == "Acronis"
  | where DeviceEventClassID == "ActiveProtectionBlocksSuspiciousActivity"
  | summarize ActiveProtectionBlocksSuspiciousActivity = count() by DeviceName  
eventGroupingSettings:
  aggregationKind: SingleAlert
triggerThreshold: 2
name: Acronis - Multiple Endpoints Infected by Ransomware
relevantTechniques:
- T1486
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: true
    enabled: true
    matchingMethod: AnyAlert
    lookbackDuration: P1D
  createIncident: true
tactics:
- Impact
queryPeriod: 1d
version: 1.0.0
severity: High
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: DeviceName
    identifier: HostName
queryFrequency: 1h
id: a783ade7-bf43-416d-b809-8f5b06d87790
kind: Scheduled
customDetails:
  DeviceName: DeviceName
triggerOperator: gt

ARM