Cisco SEG - DLP policy violation

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Id	df5c34dd-e1e6-4e07-90b1-4309ebfe754c
Rulename	Cisco SEG - DLP policy violation
Description	Detects DLP policy violation.
Severity	Medium
Tactics	Exfiltration
Techniques	T1030
Required data connectors	CefAma CiscoSEG CiscoSEGAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoSEG/Analytic Rules/CiscoSEGDLPViolation.yaml
Version	1.0.2
Arm template	df5c34dd-e1e6-4e07-90b1-4309ebfe754c.json

KQL

CiscoSEGEvent
| where NetworkDirection =~ 'Outgoing'
| where tostring(AdditionalFields) has 'ESADLPVerdict'
| extend dlp_verdict = extract(@'ESADLPVerdict":"(NOT_EVALUATED|NO TRIGGER|VIOLATION|NO VIOLATION)"', 1, tostring(AdditionalFields))
| where dlp_verdict =~ 'VIOLATION'
| extend AccountCustomEntity = SrcUserName

YAML

requiredDataConnectors:
- connectorId: CiscoSEG
  dataTypes:
  - CiscoSEGEvent
- connectorId: CiscoSEGAma
  dataTypes:
  - CiscoSEGEvent
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
status: Available
relevantTechniques:
- T1030
queryFrequency: 1h
id: df5c34dd-e1e6-4e07-90b1-4309ebfe754c
name: Cisco SEG - DLP policy violation
severity: Medium
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoSEG/Analytic Rules/CiscoSEGDLPViolation.yaml
queryPeriod: 1h
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
description: |
    'Detects DLP policy violation.'
triggerThreshold: 0
tactics:
- Exfiltration
query: |
  CiscoSEGEvent
  | where NetworkDirection =~ 'Outgoing'
  | where tostring(AdditionalFields) has 'ESADLPVerdict'
  | extend dlp_verdict = extract(@'ESADLPVerdict":"(NOT_EVALUATED|NO TRIGGER|VIOLATION|NO VIOLATION)"', 1, tostring(AdditionalFields))
  | where dlp_verdict =~ 'VIOLATION'
  | extend AccountCustomEntity = SrcUserName  
kind: Scheduled
triggerOperator: gt
version: 1.0.2

ARM

{
  "$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/df5c34dd-e1e6-4e07-90b1-4309ebfe754c')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/df5c34dd-e1e6-4e07-90b1-4309ebfe754c')]",
      "properties": {
        "alertRuleTemplateName": "df5c34dd-e1e6-4e07-90b1-4309ebfe754c",
        "customDetails": null,
        "description": "'Detects DLP policy violation.'\n",
        "displayName": "Cisco SEG - DLP policy violation",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoSEG/Analytic Rules/CiscoSEGDLPViolation.yaml",
        "query": "CiscoSEGEvent\n| where NetworkDirection =~ 'Outgoing'\n| where tostring(AdditionalFields) has 'ESADLPVerdict'\n| extend dlp_verdict = extract(@'ESADLPVerdict\":\"(NOT_EVALUATED|NO TRIGGER|VIOLATION|NO VIOLATION)\"', 1, tostring(AdditionalFields))\n| where dlp_verdict =~ 'VIOLATION'\n| extend AccountCustomEntity = SrcUserName\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration"
        ],
        "techniques": [
          "T1030"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}