Acronis - Multiple Endpoints Accessing Malicious URLs

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Id	1385f0ce-69d9-4abf-8039-52080c8c7017
Rulename	Acronis - Multiple Endpoints Accessing Malicious URLs
Description	Multiple endpoints accessing malicious URLs could indicate an ongoing phishing attack, with several employees interacting with those URLs.
Severity	Medium
Tactics	Execution
Techniques	T1204.001
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/AcronisMultipleEndpointsAccessingMaliciousURLs.yaml
Version	1.0.0
Arm template	1385f0ce-69d9-4abf-8039-52080c8c7017.json

KQL

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

YAML

name: Acronis - Multiple Endpoints Accessing Malicious URLs
relevantTechniques:
- T1204.001
id: 1385f0ce-69d9-4abf-8039-52080c8c7017
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Acronis Cyber Protect Cloud/Analytic Rules/AcronisMultipleEndpointsAccessingMaliciousURLs.yaml
requiredDataConnectors: []
eventGroupingSettings:
  aggregationKind: SingleAlert
version: 1.0.0
severity: Medium
triggerThreshold: 2
queryPeriod: 1d
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: DeviceName
  entityType: Host
kind: Scheduled
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: true
    matchingMethod: AnyAlert
    lookbackDuration: P1D
    enabled: true
  createIncident: true
queryFrequency: 1h
query: |
  CommonSecurityLog
  | where DeviceVendor == "Acronis"
  | where DeviceEventClassID == "MaliciousUrlDetected"
  | summarize MaliciousUrlDetected = count() by DeviceName  
tactics:
- Execution
customDetails:
  DeviceName: DeviceName
description: Multiple endpoints accessing malicious URLs could indicate an ongoing phishing attack, with several employees interacting with those URLs.
triggerOperator: gt

ARM