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

eventGroupingSettings:
  aggregationKind: SingleAlert
id: d5d4766b-e547-44da-9d85-48ff393db201
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    matchingMethod: AllEntities
    reopenClosedIncident: false
    enabled: false
tactics:
- Impact
suppressionDuration: PT5H
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: User
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: IP
  entityType: IP
status: Available
alertDetailsOverride:
  alertnameFormat: CTERA Ransom Protect User Blocked
  alertDescriptionFormat: CTERA Ransom Protect blocked a malicious user at {{TimeGenerated}}.
name: Ransom Protect User Blocked
relevantTechniques:
- T1486
description: Detects malicious users blocked by CTERA Ransom Protect AI engine.
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  
version: 1.0.2
suppressionEnabled: false
requiredDataConnectors:
- dataTypes:
  - Syslog
  connectorId: CTERA
severity: High
customDetails:
  EdgeFiler: EdgeFiler
kind: NRT

ARM