NGINX - Private IP address in URL

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Id	1aa6bfed-f11b-402f-9007-0dccc1152ede
Rulename	NGINX - Private IP address in URL
Description	Detects requests to unusual URL
Severity	Medium
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CustomLogsAma
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/NGINX HTTP Server/Analytic Rules/NGINXPrivateIPinUrl.yaml
Version	1.0.2
Arm template	1aa6bfed-f11b-402f-9007-0dccc1152ede.json

KQL

NGINXHTTPServer
| where UrlOriginal matches regex @'(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 UrlCustomEntity = UrlOriginal

YAML

query: |
  NGINXHTTPServer
  | where UrlOriginal matches regex @'(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 UrlCustomEntity = UrlOriginal  
version: 1.0.2
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/NGINX HTTP Server/Analytic Rules/NGINXPrivateIPinUrl.yaml
status: Available
description: |
    'Detects requests to unusual URL'
queryFrequency: 1h
name: NGINX - Private IP address in URL
kind: Scheduled
triggerThreshold: 0
id: 1aa6bfed-f11b-402f-9007-0dccc1152ede
requiredDataConnectors:
- connectorId: CustomLogsAma
  dataTypes:
  - NGINX_CL
severity: Medium
queryPeriod: 1h
entityMappings:
- fieldMappings:
  - columnName: UrlCustomEntity
    identifier: Url
  entityType: URL
relevantTechniques:
- T1190
- T1133
tactics:
- InitialAccess

ARM