Cisco Umbrella - Connection to non-corporate private network

Description

'IP addresses of broadband links that usually indicates users attempting to access their home network, for example for a remote session to a home computer.'

Query · kql

let lbtime = 10m;
Cisco_Umbrella
| where TimeGenerated > ago(lbtime)
| where EventType == 'proxylogs'
| where DvcAction =~ 'Allowed'
| where UrlCategory has_any ('Dynamic and Residential', 'Personal VPN')
| project TimeGenerated, SrcIpAddr, Identities
Raw source Cisco Umbrella - Connection to non-corporate private network · KQL
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Published by Azure/Azure-Sentinel ↗, licensed under MIT ↗. Reproduced here unmodified. 
id: c9b6d281-b96b-4763-b728-9a04b9fe1246
name: Cisco Umbrella - Connection to non-corporate private network
description: |
  'IP addresses of broadband links that usually indicates users attempting to access their home network, for example for a remote session to a home computer.'
severity: Medium
requiredDataConnectors:
  - connectorId: CiscoUmbrellaDataConnector
    dataTypes:
      - Cisco_Umbrella_proxy_CL
queryFrequency: 10m
queryPeriod: 10m
triggerOperator: gt
triggerThreshold: 0
tactics:
  - CommandAndControl
  - Exfiltration
query: |
  let lbtime = 10m;
  Cisco_Umbrella
  | where TimeGenerated > ago(lbtime)
  | where EventType == 'proxylogs'
  | where DvcAction =~ 'Allowed'
  | where UrlCategory has_any ('Dynamic and Residential', 'Personal VPN')
  | project TimeGenerated, SrcIpAddr, Identities
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: Identities
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: SrcIpAddr
version: 1.1.1
kind: Scheduled

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