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	CefAma
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	1.0.3
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

id: 8db2b374-0337-49bd-94c9-cfbf8e5d83ad
requiredDataConnectors:
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: SourceIP
  entityType: IP
- fieldMappings:
  - identifier: HostName
    columnName: DeviceName
  - identifier: OSVersion
    columnName: InfobloxB1SrcOSVersion
  - identifier: FullName
    columnName: SourceUserName
  entityType: Host
- fieldMappings:
  - identifier: Name
    columnName: InfobloxB1FeedName
  - identifier: Category
    columnName: InfobloxB1FeedName
  entityType: Malware
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  
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: 7d
    enabled: true
    matchingMethod: AllEntities
    reopenClosedIncident: true
triggerThreshold: 0
kind: Scheduled
severity: Medium
queryPeriod: 1h
customDetails:
  InfobloxB1FeedName: InfobloxB1FeedName
  SourceMACAddress: SourceMACAddress
  InfobloxB1PolicyName: InfobloxB1PolicyName
  InfobloxB1Network: InfobloxB1Network
  InfobloxB1Action: InfobloxB1PolicyAction
tactics:
- Impact
queryFrequency: 1h
status: Available
relevantTechniques:
- T1498
- T1565
triggerOperator: gt
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-DataExfiltrationAttack.yaml
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).'
name: Infoblox - Data Exfiltration Attack
version: 1.0.3

ARM