Cloudflare - Empty user agent

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Id	729c6d21-fad9-4a6a-9c7f-482393c95958
Rulename	Cloudflare - Empty user agent
Description	Detects requests where user agent is empty.
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 CCF/Analytic Rules/CloudflareCCFEmptyUA.yaml
Version	1.0.1
Arm template	729c6d21-fad9-4a6a-9c7f-482393c95958.json

KQL

Cloudflare
| where isempty(HttpUserAgentOriginal)

YAML

relevantTechniques:
- T1190
- T1133
queryFrequency: 1h
description: |
    'Detects requests where user agent is empty.'
triggerThreshold: 0
id: 729c6d21-fad9-4a6a-9c7f-482393c95958
name: Cloudflare - Empty user agent
queryPeriod: 1h
query: |
  Cloudflare
  | where isempty(HttpUserAgentOriginal)  
severity: Medium
triggerOperator: gt
entityMappings:
- fieldMappings:
  - columnName: SrcIpAddr
    identifier: Address
  entityType: IP
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cloudflare CCF/Analytic Rules/CloudflareCCFEmptyUA.yaml
requiredDataConnectors:
- connectorId: CloudflareDataConnector
  dataTypes:
  - Cloudflare
status: Available
version: 1.0.1
tactics:
- InitialAccess
kind: Scheduled

ARM