Objects Added to Malware Detection Exclusions

Veeam_GetSecurityEvents
| where instanceId == 42260
| extend AddedObjectNames = extract("AddedObjectNames=\"([^\"]*)\"", 1, SyslogMessage)
| project
    Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),
    DataSource = original_host,
    EventId = instanceId,
    ["Object Names"] = AddedObjectNames,
    MessageDetails = Description,
    Severity = SeverityDescription

tactics:
- Impact
name: Objects Added to Malware Detection Exclusions
id: a8ebf22b-a050-434c-8095-2267f206257a
requiredDataConnectors:
- connectorId: Syslog
  dataTypes:
  - Syslog
- connectorId: SyslogAma
  dataTypes:
  - Syslog
query: |-
  Veeam_GetSecurityEvents
  | where instanceId == 42260
  | extend AddedObjectNames = extract("AddedObjectNames=\"([^\"]*)\"", 1, SyslogMessage)
  | project
      Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),
      DataSource = original_host,
      EventId = instanceId,
      ["Object Names"] = AddedObjectNames,
      MessageDetails = Description,
      Severity = SeverityDescription  
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1486
description: Detects when an object is added to malware detection exclusions.
triggerOperator: gt
queryPeriod: 5m
severity: High
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Veeam/Analytic Rules/Objects_Added_to_Malware_Detection_Exclusions.yaml
version: 1.0.0
triggerThreshold: 0
kind: Scheduled
queryFrequency: 5m
status: Available
customDetails:
  VbrHostName: DataSource
  EventId: EventId
  Severity: Severity
  Date: Date
  MessageDetails: MessageDetails

{
  "$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/a8ebf22b-a050-434c-8095-2267f206257a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a8ebf22b-a050-434c-8095-2267f206257a')]",
      "properties": {
        "alertRuleTemplateName": "a8ebf22b-a050-434c-8095-2267f206257a",
        "customDetails": {
          "Date": "Date",
          "EventId": "EventId",
          "MessageDetails": "MessageDetails",
          "Severity": "Severity",
          "VbrHostName": "DataSource"
        },
        "description": "Detects when an object is added to malware detection exclusions.",
        "displayName": "Objects Added to Malware Detection Exclusions",
        "enabled": true,
        "entityMappings": null,
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Veeam/Analytic Rules/Objects_Added_to_Malware_Detection_Exclusions.yaml",
        "query": "Veeam_GetSecurityEvents\n| where instanceId == 42260\n| extend AddedObjectNames = extract(\"AddedObjectNames=\\\"([^\\\"]*)\\\"\", 1, SyslogMessage)\n| project\n    Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),\n    DataSource = original_host,\n    EventId = instanceId,\n    [\"Object Names\"] = AddedObjectNames,\n    MessageDetails = Description,\n    Severity = SeverityDescription",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1486"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}