Cloudflare - Multiple error requests from single source

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Id	ef877d68-755f-4cf1-ac1d-f336e395667d
Rulename	Cloudflare - Multiple error requests from single source
Description	Detects multiple failure requests from single source in short timeframe.
Severity	Low
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 CCF/Analytic Rules/CloudflareCCFMultipleErrorsSource.yaml
Version	1.0.1
Arm template	ef877d68-755f-4cf1-ac1d-f336e395667d.json

KQL

let threshold = 100;
Cloudflare
| where HttpRequestMethod =~ 'GET'
| summarize err_cnt = count() by SrcIpAddr, bin(TimeGenerated, 5m)
| where err_cnt > threshold

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare CCF/Analytic Rules/CloudflareCCFMultipleErrorsSource.yaml
queryFrequency: 1h
name: Cloudflare - Multiple error requests from single source
severity: Low
triggerThreshold: 0
query: |
  let threshold = 100;
  Cloudflare
  | where HttpRequestMethod =~ 'GET'
  | summarize err_cnt = count() by SrcIpAddr, bin(TimeGenerated, 5m)
  | where err_cnt > threshold  
requiredDataConnectors:
- dataTypes:
  - Cloudflare
  connectorId: CloudflareDataConnector
relevantTechniques:
- T1190
- T1133
status: Available
triggerOperator: gt
queryPeriod: 1h
description: |
    'Detects multiple failure requests from single source in short timeframe.'
id: ef877d68-755f-4cf1-ac1d-f336e395667d
version: 1.0.1
entityMappings:
- fieldMappings:
  - columnName: SrcIpAddr
    identifier: Address
  entityType: IP
kind: Scheduled
tactics:
- InitialAccess

ARM