Infoblox - Data Exfiltration Attack

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Id	8db2b374-0337-49bd-94c9-cfbf8e5d83ad
Rulename	Infoblox - Data Exfiltration Attack
Description	Data exfiltration attack detected by Infoblox Threat Insight. Customize query count, scheduling, responses and more. This rule depends on a parser based on a Kusto Function to work as expected called InfobloxCDC.
Severity	Medium
Tactics	Impact
Techniques	T1498 T1565
Required data connectors	InfobloxCloudDataConnector InfobloxCloudDataConnectorAma
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/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-DataExfiltrationAttack.yaml
Version	1.0.1
Arm template	8db2b374-0337-49bd-94c9-cfbf8e5d83ad.json

KQL

let threshold = 1;
InfobloxCDC
| where DeviceEventClassID has_cs "RPZ"
| where InfobloxB1FeedName == "Threat Insight - Data Exfiltration"
| summarize count() by SourceIP
| where count_ > threshold
| join kind=innerunique (InfobloxCDC
  | where DeviceEventClassID has_cs "RPZ"
  | where InfobloxB1FeedName == "Threat Insight - Data Exfiltration"
  ) on SourceIP

YAML

queryPeriod: 1h
entityMappings:
- fieldMappings:
  - columnName: SourceIP
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: DeviceName
    identifier: HostName
  - columnName: InfobloxB1SrcOSVersion
    identifier: OSVersion
  - columnName: SourceUserName
    identifier: FullName
  entityType: Host
- fieldMappings:
  - columnName: InfobloxB1FeedName
    identifier: Name
  - columnName: InfobloxB1FeedName
    identifier: Category
  entityType: Malware
id: 8db2b374-0337-49bd-94c9-cfbf8e5d83ad
name: Infoblox - Data Exfiltration Attack
kind: Scheduled
status: Available
description: |
    'Data exfiltration attack detected by Infoblox Threat Insight. Customize query count, scheduling, responses and more. This rule depends on a parser based on a Kusto Function to work as expected called [**InfobloxCDC**](https://aka.ms/sentinel-InfobloxCloudDataConnector-parser).'
tactics:
- Impact
customDetails:
  InfobloxB1Network: InfobloxB1Network
  SourceMACAddress: SourceMACAddress
  InfobloxB1FeedName: InfobloxB1FeedName
  InfobloxB1PolicyName: InfobloxB1PolicyName
  InfobloxB1Action: InfobloxB1PolicyAction
triggerOperator: gt
query: |
  let threshold = 1;
  InfobloxCDC
  | where DeviceEventClassID has_cs "RPZ"
  | where InfobloxB1FeedName == "Threat Insight - Data Exfiltration"
  | summarize count() by SourceIP
  | where count_ > threshold
  | join kind=innerunique (InfobloxCDC
    | where DeviceEventClassID has_cs "RPZ"
    | where InfobloxB1FeedName == "Threat Insight - Data Exfiltration"
    ) on SourceIP  
queryFrequency: 1h
incidentConfiguration:
  groupingConfiguration:
    matchingMethod: AllEntities
    enabled: true
    reopenClosedIncident: true
    lookbackDuration: 7d
  createIncident: true
triggerThreshold: 0
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-DataExfiltrationAttack.yaml
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog (InfobloxCDC)
  connectorId: InfobloxCloudDataConnector
- dataTypes:
  - CommonSecurityLog (InfobloxCDC)
  connectorId: InfobloxCloudDataConnectorAma
version: 1.0.1
relevantTechniques:
- T1498
- T1565
severity: Medium

ARM

{
  "$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/8db2b374-0337-49bd-94c9-cfbf8e5d83ad')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8db2b374-0337-49bd-94c9-cfbf8e5d83ad')]",
      "properties": {
        "alertRuleTemplateName": "8db2b374-0337-49bd-94c9-cfbf8e5d83ad",
        "customDetails": {
          "InfobloxB1Action": "InfobloxB1PolicyAction",
          "InfobloxB1FeedName": "InfobloxB1FeedName",
          "InfobloxB1Network": "InfobloxB1Network",
          "InfobloxB1PolicyName": "InfobloxB1PolicyName",
          "SourceMACAddress": "SourceMACAddress"
        },
        "description": "'Data exfiltration attack detected by Infoblox Threat Insight. Customize query count, scheduling, responses and more. This rule depends on a parser based on a Kusto Function to work as expected called [**InfobloxCDC**](https://aka.ms/sentinel-InfobloxCloudDataConnector-parser).'\n",
        "displayName": "Infoblox - Data Exfiltration Attack",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SourceIP",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "identifier": "HostName"
              },
              {
                "columnName": "InfobloxB1SrcOSVersion",
                "identifier": "OSVersion"
              },
              {
                "columnName": "SourceUserName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "Malware",
            "fieldMappings": [
              {
                "columnName": "InfobloxB1FeedName",
                "identifier": "Name"
              },
              {
                "columnName": "InfobloxB1FeedName",
                "identifier": "Category"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P7D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": true
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-DataExfiltrationAttack.yaml",
        "query": "let threshold = 1;\nInfobloxCDC\n| where DeviceEventClassID has_cs \"RPZ\"\n| where InfobloxB1FeedName == \"Threat Insight - Data Exfiltration\"\n| summarize count() by SourceIP\n| where count_ > threshold\n| join kind=innerunique (InfobloxCDC\n  | where DeviceEventClassID has_cs \"RPZ\"\n  | where InfobloxB1FeedName == \"Threat Insight - Data Exfiltration\"\n  ) on SourceIP\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1498",
          "T1565"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}