Microsoft Sentinel Analytic Rules
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Digital Guardian - Sensitive data transfer over insecure channel

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Idb52cda18-c1af-40e5-91f3-1fcbf9fa267e
RulenameDigital Guardian - Sensitive data transfer over insecure channel
DescriptionDetects sensitive data transfer over insecure channel.
SeverityMedium
TacticsExfiltration
TechniquesT1048
Required data connectorsDigitalGuardianDLP
SyslogAma
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Digital Guardian Data Loss Prevention/Analytic Rules/DigitalGuardianClassifiedDataInsecureTransfer.yaml
Version1.0.1
Arm templateb52cda18-c1af-40e5-91f3-1fcbf9fa267e.json
Deploy To Azure
DigitalGuardianDLPEvent
| where isnotempty(MatchedPolicies)
| where isnotempty(inspected_document)
| where NetworkApplicationProtocol =~ 'HTTP'
| extend AccountCustomEntity = SrcUserName, IPCustomEntity = SrcIpAddr
relevantTechniques:
- T1048
name: Digital Guardian - Sensitive data transfer over insecure channel
requiredDataConnectors:
- dataTypes:
  - DigitalGuardianDLPEvent
  connectorId: DigitalGuardianDLP
- datatypes:
  - Syslog
  connectorId: SyslogAma
entityMappings:
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
triggerThreshold: 0
id: b52cda18-c1af-40e5-91f3-1fcbf9fa267e
tactics:
- Exfiltration
version: 1.0.1
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Digital Guardian Data Loss Prevention/Analytic Rules/DigitalGuardianClassifiedDataInsecureTransfer.yaml
queryPeriod: 1h
kind: Scheduled
queryFrequency: 1h
severity: Medium
status: Available
description: |
    'Detects sensitive data transfer over insecure channel.'
query: |
  DigitalGuardianDLPEvent
  | where isnotempty(MatchedPolicies)
  | where isnotempty(inspected_document)
  | where NetworkApplicationProtocol =~ 'HTTP'
  | extend AccountCustomEntity = SrcUserName, IPCustomEntity = SrcIpAddr  
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/b52cda18-c1af-40e5-91f3-1fcbf9fa267e')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/b52cda18-c1af-40e5-91f3-1fcbf9fa267e')]",
      "properties": {
        "alertRuleTemplateName": "b52cda18-c1af-40e5-91f3-1fcbf9fa267e",
        "customDetails": null,
        "description": "'Detects sensitive data transfer over insecure channel.'\n",
        "displayName": "Digital Guardian - Sensitive data transfer over insecure channel",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Digital Guardian Data Loss Prevention/Analytic Rules/DigitalGuardianClassifiedDataInsecureTransfer.yaml",
        "query": "DigitalGuardianDLPEvent\n| where isnotempty(MatchedPolicies)\n| where isnotempty(inspected_document)\n| where NetworkApplicationProtocol =~ 'HTTP'\n| extend AccountCustomEntity = SrcUserName, IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration"
        ],
        "techniques": [
          "T1048"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}