MediumSigmaHQ citron_ninja

DNS Query To Visual Studio Code Tunnels Domain

Detects DNS query requests to Visual Studio Code tunnel domains. Attackers can abuse that feature to establish a reverse shell or persistence on a machine.

Detection logic

Detection requirements

Platform: ESXi Linux macOS Network Devices Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source category: dns_query

Known benign triggers

Legitimate use of Visual Studio Code tunnel will also trigger this.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
badoption.eu/blog/2023/01/31/code_c2.html	Unclassified	8from 2 sources
cydefops.com/vscode-data-exfiltration	Unclassified	2
ipfyx.fr/post/visual-studio-code-tunnel/	Unclassified	7

Detection rules

DNS Query To Visual Studio Code Tunnels Domain

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules