Apache - Request to sensitive files

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Id	d1c52578-3afc-11ec-8d3d-0242ac130003
Rulename	Apache - Request to sensitive files
Description	Detects request to sensitive files.
Severity	Medium
Tactics	InitialAccess
Techniques	T1189
Required data connectors	CustomLogsAma
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/ApacheHTTPServer/Analytic Rules/ApacheRequestToSensitiveFiles.yaml
Version	1.0.2
Arm template	d1c52578-3afc-11ec-8d3d-0242ac130003.json

KQL

let forbidden_files = dynamic(['shadow', 'passwd', 'id_rsa']);
ApacheHTTPServer
| where isnotempty(UrlOriginal)
| extend File = extract(@'(.*\/)?(.*)', 2, tostring(UrlOriginal))
| where File in~ (forbidden_files)
| extend FileCustomEntity = File, UrlCustomEntity = UrlOriginal

YAML

name: Apache - Request to sensitive files
kind: Scheduled
tactics:
- InitialAccess
triggerThreshold: 0
triggerOperator: gt
version: 1.0.2
status: Available
queryFrequency: 1h
id: d1c52578-3afc-11ec-8d3d-0242ac130003
requiredDataConnectors:
- connectorId: CustomLogsAma
  datatypes:
  - ApacheHTTPServer_CL
relevantTechniques:
- T1189
description: |
    'Detects request to sensitive files.'
entityMappings:
- entityType: File
  fieldMappings:
  - columnName: FileCustomEntity
    identifier: Name
- entityType: URL
  fieldMappings:
  - columnName: UrlCustomEntity
    identifier: Url
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheRequestToSensitiveFiles.yaml
queryPeriod: 1h
severity: Medium
query: |
  let forbidden_files = dynamic(['shadow', 'passwd', 'id_rsa']);
  ApacheHTTPServer
  | where isnotempty(UrlOriginal)
  | extend File = extract(@'(.*\/)?(.*)', 2, tostring(UrlOriginal))
  | where File in~ (forbidden_files)
  | extend FileCustomEntity = File, UrlCustomEntity = UrlOriginal

ARM