API - Invalid host access

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Id	28500be7-cfcf-40e1-bad4-bc524e9283e2
Rulename	API - Invalid host access
Description	42Crunch API protection against invalid host access
Severity	Low
Tactics	Reconnaissance
Techniques	T1592
Required data connectors	42CrunchAPIProtection
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIInvalidHostAccess.yaml
Version	1.0.1
Arm template	28500be7-cfcf-40e1-bad4-bc524e9283e2.json

KQL

apifirewall_log_1_CL 
| where TimeGenerated >= ago(5m) 
| where Error_Step_s has "hostpath_mapping" 
| project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Response_Header_s, Request_Header_s, Errors_s, Type, UUID_g 
| sort by TimeGenerated desc

YAML

kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - apifirewall_log_1_CL
  connectorId: 42CrunchAPIProtection
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: Source_IP_s
    identifier: Address
- entityType: Host
  fieldMappings:
  - columnName: Hostname_s
    identifier: HostName
- entityType: Account
  fieldMappings:
  - columnName: Instance_Name_s
    identifier: FullName
relevantTechniques:
- T1592
status: Available
customDetails: 
tactics:
- Reconnaissance
eventGroupingSettings:
  aggregationKind: SingleAlert
name: API - Invalid host access
queryFrequency: 5m
query: |
  apifirewall_log_1_CL 
  | where TimeGenerated >= ago(5m) 
  | where Error_Step_s has "hostpath_mapping" 
  | project-away Non_blocking_mode_b, Source_Port_d, Destination_Port_d, Query_s, API_ID_g, Response_Header_s, Request_Header_s, Errors_s, Type, UUID_g 
  | sort by TimeGenerated desc   
id: 28500be7-cfcf-40e1-bad4-bc524e9283e2
severity: Low
queryPeriod: 5m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/42Crunch API Protection/Analytic Rules/APIInvalidHostAccess.yaml
version: 1.0.1
description: |
    '42Crunch API protection against invalid host access'
triggerThreshold: 0
triggerOperator: gt

ARM