Malware
Arid Gopher
This malware is a Go written variant of Micropsia and according to DeepInstinct it is still in development.
Arid Gopher is a Windows malware family operated by AridViper.
Background
This malware is a Go-based variant of Micropsia which, per DeepInstinct, was still under active development.
Source: Malpedia (Fraunhofer FKIE).