Cobalt Strike 4.6.1 is now available. This is an out of band update to fix a few issues that were discovered in the 4.6 release that were reported to be impacting users and for which there was no workaround. This does not affect the 4.7 release, which is still on track to ship this summer.

Website Cloning

Two issues related to website cloning were addressed. An issue was introduced with the 4.6 release that caused all website cloning to fail, and we had a separate backlog issue that caused an error when cloning https websites. Both of these issues have been fixed.

Error When Using rportfwd_local

An issue was reported whereby when using rportfwd_local, any connection that entered the forwarded port caused the Cobalt Strike client to disconnect and reconnect with the teamserver. This issue has been fixed.

Workaround: glibc Dependency Issue

Some users have reported an issue when running on certain (mainly older) Linux distributions that causes the teamserver to fail to start due to a glibc dependency. We are currently looking into ways to update our build process to minimise the impact of this in the 4.7 release. While there is no fix available at the moment, we have documented a workaround. If you are affected by this issue, please refer to the steps in the Cobalt Strike documentation.

We apologise for any problems that these issues may have caused. If you notice any other issues with Cobalt Strike, please refer to the online support page, or report them to our support email address. Licensed users can download version 4.6.1 from the website. To purchase Cobalt Strike or learn more, please contact us.