Microsoft Sentinel Analytic Rules
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Votiro - File Blocked from Connector

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Id17bf3780-ae0d-4cd9-a884-5df8b687f3f5
RulenameVotiro - File Blocked from Connector
DescriptionThe analytic rule is intended to detect when a file is blocked by Votiro Sanitization Engine due to a specific policy, and notify the appropriate parties so that they can take appropriate action. The alert message will state that a file with a specific name and hash value was blocked by Votiro Sanatization Engine due to a specific policy name, and that more details can be found at a specific incident URL.
SeverityLow
TacticsDefenseEvasion
Discovery
Impact
TechniquesT1036
T1083
T1057
T1082
T1565
T1498
T0837
Required data connectorsVotiro
KindScheduled
Query frequency10m
Query period10m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Votiro/Analytic Rules/VotiroFileBlockedFromConnector.yaml
Version1.0.0
Arm template17bf3780-ae0d-4cd9-a884-5df8b687f3f5.json
Deploy To Azure
let Votiro_view  = view () { VotiroEvents | where sanitizationResult has "Blocked" and passwordProtected == "false" and from =~ "null" | extend FileWithConnectorDetails = strcat_delim(' ', fileName, 'with the hash', SrcFileSHA256, 'that was sent from connector', connectorName) | summarize count() by fileName, SrcFileSHA256, FileWithConnectorDetails, policyName, tostring(incidentURL), sanitizationResult, LogSeverity | extend FileHashAlgo = "SHA256", FileHashValue = SrcFileSHA256};Votiro_view
eventGroupingSettings:
  aggregationKind: AlertPerResult
alertDetailsOverride:
  alertTacticsColumnName: sanitizationResult
  alertDisplayNameFormat: File with hash {{SrcFileSHA256}} was blocked
  alertSeverityColumnName: LogSeverity
  alertDescriptionFormat: The {{FileWithConnectorDetails}} was blocked by Votiro due to Policy rules, see more detail in the following link {{incidentURL}}
triggerThreshold: 0
relevantTechniques:
- T1036
- T1083
- T1057
- T1082
- T1565
- T1498
- T0837
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Votiro/Analytic Rules/VotiroFileBlockedFromConnector.yaml
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: Votiro
queryPeriod: 10m
tactics:
- DefenseEvasion
- Discovery
- Impact
severity: Low
incidentConfiguration:
  createIncident: true
triggerOperator: gt
description: |
    'The analytic rule is intended to detect when a file is blocked by Votiro Sanitization Engine due to a specific policy, and notify the appropriate parties so that they can take appropriate action. The alert message will state that a file with a specific name and hash value was blocked by Votiro Sanatization Engine due to a specific policy name, and that more details can be found at a specific incident URL.'
query: let Votiro_view  = view () { VotiroEvents | where sanitizationResult has "Blocked" and passwordProtected == "false" and from =~ "null" | extend FileWithConnectorDetails = strcat_delim(' ', fileName, 'with the hash', SrcFileSHA256, 'that was sent from connector', connectorName) | summarize count() by fileName, SrcFileSHA256, FileWithConnectorDetails, policyName, tostring(incidentURL), sanitizationResult, LogSeverity | extend FileHashAlgo = "SHA256", FileHashValue = SrcFileSHA256};Votiro_view
name: Votiro - File Blocked from Connector
version: 1.0.0
kind: Scheduled
id: 17bf3780-ae0d-4cd9-a884-5df8b687f3f5
queryFrequency: 10m
entityMappings:
- entityType: FileHash
  fieldMappings:
  - columnName: FileHashAlgo
    identifier: Algorithm
  - columnName: FileHashValue
    identifier: Value
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/17bf3780-ae0d-4cd9-a884-5df8b687f3f5')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/17bf3780-ae0d-4cd9-a884-5df8b687f3f5')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "The {{FileWithConnectorDetails}} was blocked by Votiro due to Policy rules, see more detail in the following link {{incidentURL}}",
          "alertDisplayNameFormat": "File with hash {{SrcFileSHA256}} was blocked",
          "alertSeverityColumnName": "LogSeverity",
          "alertTacticsColumnName": "sanitizationResult"
        },
        "alertRuleTemplateName": "17bf3780-ae0d-4cd9-a884-5df8b687f3f5",
        "customDetails": null,
        "description": "'The analytic rule is intended to detect when a file is blocked by Votiro Sanitization Engine due to a specific policy, and notify the appropriate parties so that they can take appropriate action. The alert message will state that a file with a specific name and hash value was blocked by Votiro Sanatization Engine due to a specific policy name, and that more details can be found at a specific incident URL.'\n",
        "displayName": "Votiro - File Blocked from Connector",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "FileHash",
            "fieldMappings": [
              {
                "columnName": "FileHashAlgo",
                "identifier": "Algorithm"
              },
              {
                "columnName": "FileHashValue",
                "identifier": "Value"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Votiro/Analytic Rules/VotiroFileBlockedFromConnector.yaml",
        "query": "let Votiro_view  = view () { VotiroEvents | where sanitizationResult has \"Blocked\" and passwordProtected == \"false\" and from =~ \"null\" | extend FileWithConnectorDetails = strcat_delim(' ', fileName, 'with the hash', SrcFileSHA256, 'that was sent from connector', connectorName) | summarize count() by fileName, SrcFileSHA256, FileWithConnectorDetails, policyName, tostring(incidentURL), sanitizationResult, LogSeverity | extend FileHashAlgo = \"SHA256\", FileHashValue = SrcFileSHA256};Votiro_view",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "Low",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion",
          "Discovery",
          "Impact"
        ],
        "techniques": [
          "T1036",
          "T1057",
          "T1082",
          "T1083",
          "T1498",
          "T1565"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}