Ransom Protect User Blocked

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Id	d5d4766b-e547-44da-9d85-48ff393db201
Rulename	Ransom Protect User Blocked
Description	Detects malicious users blocked by CTERA Ransom Protect AI engine.
Severity	High
Tactics	Impact
Techniques	T1486
Required data connectors	CTERA
Kind	NRT
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml
Version	1.0.2
Arm template	d5d4766b-e547-44da-9d85-48ff393db201.json

KQL

Syslog
| where SyslogMessage contains "Ransom Protect mechanism blocked"
| extend 
    Portal = extract("portal:(\\w+)", 1, SyslogMessage),
    EdgeFiler = extract("Edge Filer:(\\w+-\\d+)", 1, SyslogMessage),
    IP = extract("IP:([0-9.]+)", 1, SyslogMessage),
    User = extract("user:(\\w+)", 1, SyslogMessage),
    BlockedTime = extract("at ([^ ]+)", 1, SyslogMessage)
| project TimeGenerated, Portal, EdgeFiler, IP, User, BlockedTime

YAML

suppressionEnabled: false
alertDetailsOverride:
  alertDescriptionFormat: CTERA Ransom Protect blocked a malicious user at {{TimeGenerated}}.
  alertnameFormat: CTERA Ransom Protect User Blocked
id: d5d4766b-e547-44da-9d85-48ff393db201
description: Detects malicious users blocked by CTERA Ransom Protect AI engine.
entityMappings:
- fieldMappings:
  - columnName: User
    identifier: FullName
  entityType: Account
- fieldMappings:
  - columnName: IP
    identifier: Address
  entityType: IP
version: 1.0.2
suppressionDuration: PT5H
tactics:
- Impact
kind: NRT
name: Ransom Protect User Blocked
query: |
  Syslog
  | where SyslogMessage contains "Ransom Protect mechanism blocked"
  | extend 
      Portal = extract("portal:(\\w+)", 1, SyslogMessage),
      EdgeFiler = extract("Edge Filer:(\\w+-\\d+)", 1, SyslogMessage),
      IP = extract("IP:([0-9.]+)", 1, SyslogMessage),
      User = extract("user:(\\w+)", 1, SyslogMessage),
      BlockedTime = extract("at ([^ ]+)", 1, SyslogMessage)
  | project TimeGenerated, Portal, EdgeFiler, IP, User, BlockedTime  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml
severity: High
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
requiredDataConnectors:
- dataTypes:
  - Syslog
  connectorId: CTERA
status: Available
customDetails:
  EdgeFiler: EdgeFiler
eventGroupingSettings:
  aggregationKind: SingleAlert
relevantTechniques:
- T1486

ARM