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HighSigmaHQFlorian Roth (Nextron Systems)

Communication To Ngrok Tunneling Service Initiated

Detects an executable initiating a network connection to "ngrok" tunneling domains. Attackers were seen using this "ngrok" in order to store their second stage payloads and malware. While communication with such…

Description

Detects an executable initiating a network connection to "ngrok" tunneling domains. Attackers were seen using this "ngrok" in order to store their second stage payloads and malware. While communication with such domains can be legitimate, often times is a sign of either data exfiltration by malicious actors or additional download.

Detection logic

Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 5 ATT&CK techniques it maps to.

Log source product
windows
Log source category
network_connection

Known benign triggers

  • Legitimate use of the ngrok service.

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