Data verified Apr 2026
ADYour product here. Reach security decision-makers.Launch a campaignExternalC2 Description
A library for integrating communication channels with the Cobalt Strike External C2 server. This library provides an implementation of the Cobalt Strike External C2 spec, including a basic web channel and a websocket channel. The codebase is designed to allow additional channels to be added easily. Features Implemented: C2 Channels - Direct Socket Connection, Web API Channel (Dotnet Core), WebSockets Channel (Dotnet Core). The code is heavily commented, and it is recommended to read the comments first. Getting started: The solution should be built with Visual Studio 2017. More info will be added soon. Developing, Building, Deploying, Contributing sections are to be updated. License: ExternalC2 is open-sourced software licensed under the MIT license.
ExternalC2 FAQ
Common questions about ExternalC2 including features, pricing, alternatives, and user reviews.
ExternalC2 is A library for integrating communication channels with the Cobalt Strike External C2 server. It is a Security Operations solution designed to help security teams with Red Team.
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