Microsoft Sentinel Analytic Rules
cloudbrothers.infoAzure Sentinel RepoToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeBack to homepage

Oracle - Multiple user agents for single source

Back
Id44c7d12a-573f-11ec-bf63-0242ac130002
RulenameOracle - Multiple user agents for single source
DescriptionDetects requests with different user agents from one source in short timeframe.
SeverityMedium
TacticsInitialAccess
TechniquesT1190
T1133
Required data connectorsCustomLogsAma
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicDifferentUAsFromSingleIP.yaml
Version1.0.3
Arm template44c7d12a-573f-11ec-bf63-0242ac130002.json
Deploy To Azure
let threshold = 5;
OracleWebLogicServerEvent
| where isnotempty(HttpUserAgentOriginal)
| summarize ua_count=makeset(HttpUserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
| where array_length(ua_count) > threshold
| extend IPCustomEntity = SrcIpAddr
triggerThreshold: 0
requiredDataConnectors:
- connectorId: CustomLogsAma
  dataTypes:
  - OracleWebLogicServer_CL
severity: Medium
queryFrequency: 1h
id: 44c7d12a-573f-11ec-bf63-0242ac130002
relevantTechniques:
- T1190
- T1133
queryPeriod: 1h
name: Oracle - Multiple user agents for single source
status: Available
kind: Scheduled
tactics:
- InitialAccess
triggerOperator: gt
version: 1.0.3
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
description: |
    'Detects requests with different user agents from one source in short timeframe.'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicDifferentUAsFromSingleIP.yaml
query: |
  let threshold = 5;
  OracleWebLogicServerEvent
  | where isnotempty(HttpUserAgentOriginal)
  | summarize ua_count=makeset(HttpUserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
  | where array_length(ua_count) > 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": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/44c7d12a-573f-11ec-bf63-0242ac130002')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/44c7d12a-573f-11ec-bf63-0242ac130002')]",
      "properties": {
        "alertRuleTemplateName": "44c7d12a-573f-11ec-bf63-0242ac130002",
        "customDetails": null,
        "description": "'Detects requests with different user agents from one source in short timeframe.'\n",
        "displayName": "Oracle - Multiple user agents for single source",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleWebLogicServer/Analytic Rules/OracleWebLogicDifferentUAsFromSingleIP.yaml",
        "query": "let threshold = 5;\nOracleWebLogicServerEvent\n| where isnotempty(HttpUserAgentOriginal)\n| summarize ua_count=makeset(HttpUserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)\n| where array_length(ua_count) > threshold\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.3",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}