Microsoft Sentinel Analytic Rules
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Oracle - Multiple client errors from single IP

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Id41775080-5740-11ec-bf63-0242ac130002
RulenameOracle - Multiple client errors from single IP
DescriptionDetects multiple client errors from one source in short timeframe
SeverityMedium
TacticsInitialAccess
TechniquesT1190
T1133
Required data connectorsOracleWebLogicServer
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicMultipleClientErrorsFromSingleIP.yaml
Version1.0.1
Arm template41775080-5740-11ec-bf63-0242ac130002.json
Deploy To Azure
let threshold = 100;
OracleWebLogicServerEvent
| where HttpStatusCode >= 400 and HttpStatusCode <= 499 
| summarize MultipleClientErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
| where MultipleClientErrors > threshold
| extend IPCustomEntity = SrcIpAddr
queryFrequency: 1h
tactics:
- InitialAccess
queryPeriod: 1h
kind: Scheduled
relevantTechniques:
- T1190
- T1133
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicMultipleClientErrorsFromSingleIP.yaml
description: |
    'Detects multiple client errors from one source in short timeframe'
requiredDataConnectors:
- dataTypes:
  - OracleWebLogicServerEvent
  connectorId: OracleWebLogicServer
version: 1.0.1
triggerThreshold: 0
severity: Medium
triggerOperator: gt
id: 41775080-5740-11ec-bf63-0242ac130002
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
status: Available
name: Oracle - Multiple client errors from single IP
query: |
  let threshold = 100;
  OracleWebLogicServerEvent
  | where HttpStatusCode >= 400 and HttpStatusCode <= 499 
  | summarize MultipleClientErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)
  | where MultipleClientErrors > threshold
  | extend IPCustomEntity = SrcIpAddr  
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/41775080-5740-11ec-bf63-0242ac130002')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/41775080-5740-11ec-bf63-0242ac130002')]",
      "properties": {
        "alertRuleTemplateName": "41775080-5740-11ec-bf63-0242ac130002",
        "customDetails": null,
        "description": "'Detects multiple client errors from one source in short timeframe'\n",
        "displayName": "Oracle - Multiple client errors from single IP",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicMultipleClientErrorsFromSingleIP.yaml",
        "query": "let threshold = 100;\nOracleWebLogicServerEvent\n| where HttpStatusCode >= 400 and HttpStatusCode <= 499 \n| summarize MultipleClientErrors = count() by SrcIpAddr, bin(TimeGenerated, 5m)\n| where MultipleClientErrors > threshold\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}