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

ARM