EmPyre
EmPyre is an open source post-exploitation agent written in Python that is available in Github.
There are a couple of tutorials online on how to use it, and it was first found used in the wild in late 2018 by malwarebytes as a tool that was used by DathMiner malware. Empyre allows a remote user to gain control over infected machine, and gain persistence.
Source: Information Security Newspaper
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