Potential Tunneling via Tailscaled

Last updated a day ago on 2026-07-29

Created a day ago on 2026-07-29

About

Identifies the use of Tailscaled to potentially tunnel network traffic. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination, or to bypass network restrictions and/or hide traffic from network monitoring.

Tags

Domain: EndpointOS: WindowsOS: LinuxOS: macOSUse Case: Threat DetectionTactic: Command and ControlData Source: Elastic EndgameData Source: Elastic DefendData Source: SysmonData Source: SentinelOneData Source: Microsoft Defender XDRData Source: Windows Security Event LogsData Source: CrowdstrikeLanguage: eql

Severity

medium

Risk Score

MITRE ATT&CK™

Command and Control (TA0011)(external, opens in a new tab or window)

↳ Proxy (T1090)(external, opens in a new tab or window)

↳ Remote Access Tools (T1219)(external, opens in a new tab or window)

↳ Protocol Tunneling (T1572)(external, opens in a new tab or window)

License

Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type

Event Correlation Rule

Integration Pack

Prebuilt Security Detection Rules

Index Patterns

endgame-*logs-crowdstrike.fdr*logs-endpoint.events.process-*logs-m365_defender.event-*logs-sentinel_one_cloud_funnel.*logs-system.security*logs-windows.sysmon_operational-*winlogbeat-*auditbeat-*

Related Integrations

endpoint(external, opens in a new tab or window)

windows(external, opens in a new tab or window)

sentinel_one_cloud_funnel(external, opens in a new tab or window)

m365_defender(external, opens in a new tab or window)

system(external, opens in a new tab or window)

crowdstrike(external, opens in a new tab or window)

Query

✄𐘗text code block:
✄𐘗process where event.type == "start" and
process.name like~ ("tailscaled", "tailscaled.exe") and
process.args like~ ("*--socks5-server*", "*--outbound-http-proxy-listen*")

Install detection rules in Elastic Security

Detect Potential Tunneling via Tailscaled in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).