Ransom Protect User Blocked
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 | Scheduled |
Query frequency | 5m |
Query period | 5m |
Trigger threshold | 0 |
Trigger operator | GreaterThan |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml |
Version | 1.0.0 |
Arm template | d5d4766b-e547-44da-9d85-48ff393db201.json |
Syslog
| where SyslogMessage contains "[com.ctera.db.jpa.log.RansomLogEntityListener] - 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
queryFrequency: 5m
description: Detects malicious users blocked by CTERA Ransom Protect AI engine.
eventGroupingSettings:
aggregationKind: SingleAlert
name: Ransom Protect User Blocked
suppressionDuration: PT5H
relevantTechniques:
- T1486
triggerThreshold: 0
status: Available
id: d5d4766b-e547-44da-9d85-48ff393db201
requiredDataConnectors:
- dataTypes:
- Syslog
connectorId: CTERA
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: User
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IP
queryPeriod: 5m
query: |
Syslog
| where SyslogMessage contains "[com.ctera.db.jpa.log.RansomLogEntityListener] - 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
kind: Scheduled
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml
severity: High
customDetails:
EdgeFiler: EdgeFiler
version: 1.0.0
alertDetailsOverride:
alertDescriptionFormat: CTERA Ransom Protect blocked a malicious user at {{TimeGenerated}}.
alertnameFormat: CTERA Ransom Protect User Blocked
incidentConfiguration:
createIncident: true
groupingConfiguration:
lookbackDuration: PT5H
reopenClosedIncident: false
matchingMethod: AllEntities
enabled: false
triggerOperator: GreaterThan
tactics:
- Impact
suppressionEnabled: false
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/d5d4766b-e547-44da-9d85-48ff393db201')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d5d4766b-e547-44da-9d85-48ff393db201')]",
"properties": {
"alertDetailsOverride": {
"alertDescriptionFormat": "CTERA Ransom Protect blocked a malicious user at {{TimeGenerated}}.",
"alertnameFormat": "CTERA Ransom Protect User Blocked"
},
"alertRuleTemplateName": "d5d4766b-e547-44da-9d85-48ff393db201",
"customDetails": {
"EdgeFiler": "EdgeFiler"
},
"description": "Detects malicious users blocked by CTERA Ransom Protect AI engine.",
"displayName": "Ransom Protect User Blocked",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "User",
"identifier": "FullName"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IP",
"identifier": "Address"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "SingleAlert"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": false,
"lookbackDuration": "PT5H",
"matchingMethod": "AllEntities",
"reopenClosedIncident": false
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CTERA/Analytic Rules/RansomwareUserBlocked.yaml",
"query": "Syslog\n| where SyslogMessage contains \"[com.ctera.db.jpa.log.RansomLogEntityListener] - Ransom Protect mechanism blocked\"\n| extend \n Portal = extract(\"portal:(\\\\w+)\", 1, SyslogMessage),\n EdgeFiler = extract(\"Edge Filer:(\\\\w+-\\\\d+)\", 1, SyslogMessage),\n IP = extract(\"IP:([0-9.]+)\", 1, SyslogMessage),\n User = extract(\"user:(\\\\w+)\", 1, SyslogMessage),\n BlockedTime = extract(\"at ([^ ]+)\", 1, SyslogMessage)\n| project TimeGenerated, Portal, EdgeFiler, IP, User, BlockedTime\n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT5H",
"suppressionEnabled": false,
"tactics": [
"Impact"
],
"techniques": [
"T1486"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}