Microsoft Sentinel Analytic Rules
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Apache - Multiple server errors from single IP

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Id1bf246a2-3af9-11ec-8d3d-0242ac130003
RulenameApache - Multiple server errors from single IP
DescriptionDetects multiple server errors from one source in short timeframe
SeverityMedium
TacticsImpact
InitialAccess
TechniquesT1498
T1190
T1133
Required data connectorsApacheHTTPServer
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheMultipleServerErrorsRequestsFromSingleIP.yaml
Version1.0.1
Arm template1bf246a2-3af9-11ec-8d3d-0242ac130003.json
Deploy To Azure
let threshold = 100;
ApacheHTTPServer
| where HttpStatusCode >= 500 and HttpStatusCode <= 599 
| summarize MultipleServerErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
| where MultipleServerErrors > threshold
| extend IPCustomEntity = SrcIpAddr
severity: Medium
queryFrequency: 1h
relevantTechniques:
- T1498
- T1190
- T1133
tactics:
- Impact
- InitialAccess
kind: Scheduled
query: |
  let threshold = 100;
  ApacheHTTPServer
  | where HttpStatusCode >= 500 and HttpStatusCode <= 599 
  | summarize MultipleServerErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
  | where MultipleServerErrors > threshold
  | extend IPCustomEntity = SrcIpAddr  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheMultipleServerErrorsRequestsFromSingleIP.yaml
queryPeriod: 1h
status: Available
version: 1.0.1
name: Apache - Multiple server errors from single IP
requiredDataConnectors:
- dataTypes:
  - ApacheHTTPServer
  connectorId: ApacheHTTPServer
triggerOperator: gt
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
id: 1bf246a2-3af9-11ec-8d3d-0242ac130003
description: |
    'Detects multiple server errors from one source in short timeframe'
triggerThreshold: 0
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/1bf246a2-3af9-11ec-8d3d-0242ac130003')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1bf246a2-3af9-11ec-8d3d-0242ac130003')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01-preview",
      "properties": {
        "displayName": "Apache - Multiple server errors from single IP",
        "description": "'Detects multiple server errors from one source in short timeframe'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "let threshold = 100;\nApacheHTTPServer\n| where HttpStatusCode >= 500 and HttpStatusCode <= 599 \n| summarize MultipleServerErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)\n| where MultipleServerErrors > threshold\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact",
          "InitialAccess"
        ],
        "techniques": [
          "T1498",
          "T1190",
          "T1133"
        ],
        "alertRuleTemplateName": "1bf246a2-3af9-11ec-8d3d-0242ac130003",
        "customDetails": null,
        "entityMappings": [
          {
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ],
            "entityType": "IP"
          }
        ],
        "templateVersion": "1.0.1",
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ApacheHTTPServer/Analytic Rules/ApacheMultipleServerErrorsRequestsFromSingleIP.yaml"
      }
    }
  ]
}