Cloudflare - Bad client IP

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Id	a7ce6135-9d55-4f14-b058-adc2e920a4fa
Rulename	Cloudflare - Bad client IP
Description	Detects requests from IP with bad reputation index.
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/CloudflareBadClientIp.yaml
Version	1.0.1
Arm template	a7ce6135-9d55-4f14-b058-adc2e920a4fa.json

KQL

let ip_reputation = dynamic(['unknown', 'badHost', 'greylist', 'securityScanner', 'scan', 'tor']);
Cloudflare
| where ClientIPClass in~ (ip_reputation)
| extend CompleteUrl = strcat(HttpRequestHeaderHost,ClientRequestPath)

YAML

id: a7ce6135-9d55-4f14-b058-adc2e920a4fa
requiredDataConnectors:
- connectorId: CloudflareDataConnector
  dataTypes:
  - Cloudflare
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
- fieldMappings:
  - identifier: Url
    columnName: CompleteUrl
  entityType: URL
query: |
  let ip_reputation = dynamic(['unknown', 'badHost', 'greylist', 'securityScanner', 'scan', 'tor']);
  Cloudflare
  | where ClientIPClass in~ (ip_reputation)
  | extend CompleteUrl = strcat(HttpRequestHeaderHost,ClientRequestPath)  
triggerThreshold: 0
kind: Scheduled
severity: Medium
queryPeriod: 1h
tactics:
- InitialAccess
queryFrequency: 1h
status: Available
relevantTechniques:
- T1190
- T1133
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare/Analytic Rules/CloudflareBadClientIp.yaml
description: |
    'Detects requests from IP with bad reputation index.'
name: Cloudflare - Bad client IP
version: 1.0.1

ARM