Cloudflare - Unexpected URI
Id | dcb797cd-a4cd-4306-897b-7991f71d7e27 |
Rulename | Cloudflare - Unexpected URI |
Description | Detects client requests to unusual URI. |
Severity | Medium |
Tactics | InitialAccess |
Techniques | T1190 T1133 |
Required data connectors | CloudflareDataConnector |
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/Cloudflare/Analytic Rules/CloudflareUnexpectedUrl.yaml |
Version | 1.0.0 |
Arm template | dcb797cd-a4cd-4306-897b-7991f71d7e27.json |
Cloudflare
| where HttpRequestMethod =~ 'GET'
| where DstBytes != 0 or SrcBytes != 0
| where ClientRequestURI matches regex @'(127\.\d{1,3}\.\d{1,3}\.\d{1,3})|(10\.\d{1,3}\.\d{1,3}\.\d{1,3})|(172\.1[6-9]\.\d{1,3}\.\d{1,3})|(172\.2[0-9]\.\d{1,3}\.\d{1,3})|(172\.3[0-1]\.\d{1,3}\.\d{1,3})|(192\.168\.\d{1,3}\.\d{1,3})'
| extend IPCustomEntity = SrcIpAddr
id: dcb797cd-a4cd-4306-897b-7991f71d7e27
tactics:
- InitialAccess
name: Cloudflare - Unexpected URI
description: |
'Detects client requests to unusual URI.'
severity: Medium
triggerThreshold: 0
queryFrequency: 1h
requiredDataConnectors:
- connectorId: CloudflareDataConnector
dataTypes:
- Cloudflare
relevantTechniques:
- T1190
- T1133
query: |
Cloudflare
| where HttpRequestMethod =~ 'GET'
| where DstBytes != 0 or SrcBytes != 0
| where ClientRequestURI matches regex @'(127\.\d{1,3}\.\d{1,3}\.\d{1,3})|(10\.\d{1,3}\.\d{1,3}\.\d{1,3})|(172\.1[6-9]\.\d{1,3}\.\d{1,3})|(172\.2[0-9]\.\d{1,3}\.\d{1,3})|(172\.3[0-1]\.\d{1,3}\.\d{1,3})|(192\.168\.\d{1,3}\.\d{1,3})'
| extend IPCustomEntity = SrcIpAddr
status: Available
queryPeriod: 1h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare/Analytic Rules/CloudflareUnexpectedUrl.yaml
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
triggerOperator: gt
kind: Scheduled
version: 1.0.0
{
"$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/dcb797cd-a4cd-4306-897b-7991f71d7e27')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/dcb797cd-a4cd-4306-897b-7991f71d7e27')]",
"properties": {
"alertRuleTemplateName": "dcb797cd-a4cd-4306-897b-7991f71d7e27",
"customDetails": null,
"description": "'Detects client requests to unusual URI.'\n",
"displayName": "Cloudflare - Unexpected URI",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare/Analytic Rules/CloudflareUnexpectedUrl.yaml",
"query": "Cloudflare\n| where HttpRequestMethod =~ 'GET'\n| where DstBytes != 0 or SrcBytes != 0\n| where ClientRequestURI matches regex @'(127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})|(10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})|(172\\.1[6-9]\\.\\d{1,3}\\.\\d{1,3})|(172\\.2[0-9]\\.\\d{1,3}\\.\\d{1,3})|(172\\.3[0-1]\\.\\d{1,3}\\.\\d{1,3})|(192\\.168\\.\\d{1,3}\\.\\d{1,3})'\n| extend IPCustomEntity = SrcIpAddr\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "Medium",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": [
"T1133",
"T1190"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}