vArmour AppController - SMB Realm Traversal
Id | a36de6c3-3198-4d37-92ae-e19e36712c2e |
Rulename | vArmour AppController - SMB Realm Traversal |
Description | Detects when SMB traffic crosses Production and Non-Production Realms. Possible network share discovery or lateral tool transfer across realms |
Severity | Medium |
Tactics | Discovery LateralMovement |
Techniques | T1135 T1570 |
Required data connectors | CefAma vArmourAC vArmourACAma |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/vArmour Application Controller/Analytic Rules/vArmourApplicationControllerSMBRealmTraversal.yaml |
Version | 1.0.2 |
Arm template | a36de6c3-3198-4d37-92ae-e19e36712c2e.json |
CommonSecurityLog
| where DeviceVendor == "vArmour"
| where DeviceProduct == "AC"
| where Activity == "POLICY_VIOLATION"
| extend PolicyName = extract("(SMB_REALM_TRAVERSAL\\w+{.*})", 1, DeviceCustomString1)
kind: Scheduled
relevantTechniques:
- T1135
- T1570
description: |
'Detects when SMB traffic crosses Production and Non-Production Realms. Possible network share discovery or lateral tool transfer across realms'
queryPeriod: 1h
queryFrequency: 1h
tactics:
- Discovery
- LateralMovement
name: vArmour AppController - SMB Realm Traversal
requiredDataConnectors:
- connectorId: vArmourAC
dataTypes:
- CommonSecurityLog
- connectorId: vArmourACAma
dataTypes:
- CommonSecurityLog
- connectorId: CefAma
dataTypes:
- CommonSecurityLog
entityMappings:
- entityType: Host
fieldMappings:
- identifier: HostName
columnName: DestinationHostName
- entityType: IP
fieldMappings:
- identifier: Address
columnName: SourceIP
triggerThreshold: 0
version: 1.0.2
id: a36de6c3-3198-4d37-92ae-e19e36712c2e
query: |
CommonSecurityLog
| where DeviceVendor == "vArmour"
| where DeviceProduct == "AC"
| where Activity == "POLICY_VIOLATION"
| extend PolicyName = extract("(SMB_REALM_TRAVERSAL\\w+{.*})", 1, DeviceCustomString1)
status: Available
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/vArmour Application Controller/Analytic Rules/vArmourApplicationControllerSMBRealmTraversal.yaml
severity: Medium
{
"$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/a36de6c3-3198-4d37-92ae-e19e36712c2e')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a36de6c3-3198-4d37-92ae-e19e36712c2e')]",
"properties": {
"alertRuleTemplateName": "a36de6c3-3198-4d37-92ae-e19e36712c2e",
"customDetails": null,
"description": "'Detects when SMB traffic crosses Production and Non-Production Realms. Possible network share discovery or lateral tool transfer across realms'\n",
"displayName": "vArmour AppController - SMB Realm Traversal",
"enabled": true,
"entityMappings": [
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "DestinationHostName",
"identifier": "HostName"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "SourceIP",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/vArmour Application Controller/Analytic Rules/vArmourApplicationControllerSMBRealmTraversal.yaml",
"query": "CommonSecurityLog\n| where DeviceVendor == \"vArmour\"\n| where DeviceProduct == \"AC\"\n| where Activity == \"POLICY_VIOLATION\"\n| extend PolicyName = extract(\"(SMB_REALM_TRAVERSAL\\\\w+{.*})\", 1, DeviceCustomString1)\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "Medium",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Discovery",
"LateralMovement"
],
"techniques": [
"T1135",
"T1570"
],
"templateVersion": "1.0.2",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}