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

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

ARM