Apache - Put suspicious file

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Id	c5d69e46-3b00-11ec-8d3d-0242ac130003
Rulename	Apache - Put suspicious file
Description	Detects PUT or POST of suspicious file
Severity	Medium
Tactics	InitialAccess Exfiltration
Techniques	T1190 T1133 T1048
Required data connectors	ApacheHTTPServer 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/ApachePutSuspiciousFiles.yaml
Version	1.0.1
Arm template	c5d69e46-3b00-11ec-8d3d-0242ac130003.json

KQL

ApacheHTTPServer
| where HttpRequestMethod in~ ("POST", "PUT") 
| extend File = extract(@"(.*\/)?(.*)", 2, tostring(UrlOriginal))
| where isnotempty(File)
| where File matches regex @"([a-zA-Z0-9-_]+\.)([a-zA-Z0-9-]+\.[a-zA-Z0-9-]+)"
| extend FileCustomEntity = File, UrlCustomEntity = UrlOriginal

YAML

queryPeriod: 1h
version: 1.0.1
tactics:
- InitialAccess
- Exfiltration
queryFrequency: 1h
id: c5d69e46-3b00-11ec-8d3d-0242ac130003
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - ApacheHTTPServer
  connectorId: ApacheHTTPServer
- datatypes:
  - ApacheHTTPServer_CL
  connectorId: CustomLogsAma
severity: Medium
entityMappings:
- entityType: File
  fieldMappings:
  - columnName: FileCustomEntity
    identifier: Name
- entityType: URL
  fieldMappings:
  - columnName: UrlCustomEntity
    identifier: Url
triggerThreshold: 0
relevantTechniques:
- T1190
- T1133
- T1048
query: |
  ApacheHTTPServer
  | where HttpRequestMethod in~ ("POST", "PUT") 
  | extend File = extract(@"(.*\/)?(.*)", 2, tostring(UrlOriginal))
  | where isnotempty(File)
  | where File matches regex @"([a-zA-Z0-9-_]+\.)([a-zA-Z0-9-]+\.[a-zA-Z0-9-]+)"
  | extend FileCustomEntity = File, UrlCustomEntity = UrlOriginal  
kind: Scheduled
name: Apache - Put suspicious file
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApachePutSuspiciousFiles.yaml
description: |
    'Detects PUT or POST of suspicious file'
status: Available

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/c5d69e46-3b00-11ec-8d3d-0242ac130003')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c5d69e46-3b00-11ec-8d3d-0242ac130003')]",
      "properties": {
        "alertRuleTemplateName": "c5d69e46-3b00-11ec-8d3d-0242ac130003",
        "customDetails": null,
        "description": "'Detects PUT or POST of suspicious file'\n",
        "displayName": "Apache - Put suspicious file",
        "enabled": true,
        "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/ApachePutSuspiciousFiles.yaml",
        "query": "ApacheHTTPServer\n| where HttpRequestMethod in~ (\"POST\", \"PUT\") \n| extend File = extract(@\"(.*\\/)?(.*)\", 2, tostring(UrlOriginal))\n| where isnotempty(File)\n| where File matches regex @\"([a-zA-Z0-9-_]+\\.)([a-zA-Z0-9-]+\\.[a-zA-Z0-9-]+)\"\n| extend FileCustomEntity = File, UrlCustomEntity = UrlOriginal\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration",
          "InitialAccess"
        ],
        "techniques": [
          "T1048",
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}