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Adding - Data Exfil using Dev Tunnels #4579

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Adding - Data Exfil using Dev Tunnels #4579

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29 changes: 29 additions & 0 deletions rules/windows/network_connection/net_connection_win_devtunnel_data_exfil.yml
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title: Communication To Microsoft DevTunnel Domains/Forwarded Ports
id: 9501f8e6-8e3d-48fc-a8a6-1089dd5d7ef4
status: test
description: Detects an executable accessing DevTunnel Domains/Forwarded Ports, which could be a sign of forbidden data exfiltration by malicious actors
references:
- https://cydefops.com/vscode-data-exfiltration
- https://cydefops.com/devtunnels-unleashed
author: Kamran Saifullah
date: 2023/11/20
modified: 2023/11/20
tags:
- attack.exfiltration
- attack.t1567.001
logsource:
category: network_connection
product: windows
detection:
selection:
Initiated: 'true'
DestinationHostname|endswith:
- '.devtunnels.ms'
- '.euw.devtunnels.ms'
- '.usw2.devtunnels.ms'
- '.tunnels.api.visualstudio.com'
- '.rel.tunnels.api.visualstudio.com'
condition: selection
falsepositives:
- Legitimate use of ngrok domains
level: high