OracleDBAudit - Query on Sensitive Table

let sensitive_tbls = dynamic(['table_name1', 'table_name2']);
OracleDatabaseAuditEvent
| where isnotempty(DstUserName)
| where isnotempty(Action)
| extend TableName = replace(@'[,\(\)]', '', extract(@'(?i)SELECT(.*?)FROM\s(.*?)\s', 2, Action))
| where isnotempty(TableName)
| where TableName in (sensitive_tbls)
| project TableName, DstUserName, DbAction
| extend AccountCustomEntity = DstUserName

relevantTechniques:
- T1005
name: OracleDBAudit - Query on Sensitive Table
requiredDataConnectors:
- dataTypes:
  - Syslog
  connectorId: OracleDatabaseAudit
- datatypes:
  - Syslog
  connectorId: SyslogAma
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: AccountCustomEntity
  entityType: Account
triggerThreshold: 0
id: d7fdcad5-ce96-4db6-9a5e-4a86a5166e5e
tactics:
- Collection
version: 1.0.2
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleDatabaseAudit/Analytic Rules/OracleDBAuditQueryOnSensitiveTable.yaml
queryPeriod: 30m
kind: Scheduled
queryFrequency: 30m
severity: Medium
status: Available
description: |
    'Detects when user queries sensitive tables.'
query: |
  let sensitive_tbls = dynamic(['table_name1', 'table_name2']);
  OracleDatabaseAuditEvent
  | where isnotempty(DstUserName)
  | where isnotempty(Action)
  | extend TableName = replace(@'[,\(\)]', '', extract(@'(?i)SELECT(.*?)FROM\s(.*?)\s', 2, Action))
  | where isnotempty(TableName)
  | where TableName in (sensitive_tbls)
  | project TableName, DstUserName, DbAction
  | extend AccountCustomEntity = DstUserName  
triggerOperator: gt

{
  "$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/d7fdcad5-ce96-4db6-9a5e-4a86a5166e5e')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d7fdcad5-ce96-4db6-9a5e-4a86a5166e5e')]",
      "properties": {
        "alertRuleTemplateName": "d7fdcad5-ce96-4db6-9a5e-4a86a5166e5e",
        "customDetails": null,
        "description": "'Detects when user queries sensitive tables.'\n",
        "displayName": "OracleDBAudit - Query on Sensitive Table",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/OracleDatabaseAudit/Analytic Rules/OracleDBAuditQueryOnSensitiveTable.yaml",
        "query": "let sensitive_tbls = dynamic(['table_name1', 'table_name2']);\nOracleDatabaseAuditEvent\n| where isnotempty(DstUserName)\n| where isnotempty(Action)\n| extend TableName = replace(@'[,\\(\\)]', '', extract(@'(?i)SELECT(.*?)FROM\\s(.*?)\\s', 2, Action))\n| where isnotempty(TableName)\n| where TableName in (sensitive_tbls)\n| project TableName, DstUserName, DbAction\n| extend AccountCustomEntity = DstUserName\n",
        "queryFrequency": "PT30M",
        "queryPeriod": "PT30M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection"
        ],
        "techniques": [
          "T1005"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}