Malware
SEADADDY
aka SeaDuke · Seadask
Backdoor written in Python 2, deployed with PyInstaller.
SEADADDY, also known as SeaDuke, Seadask, is a Windows malware family operated by APT29.
Background
A backdoor coded in Python 2 and packaged for delivery with PyInstaller.
Source: Malpedia (Fraunhofer FKIE).