Malware
Bifrost
aka elf.bifrose
Linux version of the bifrose malware that originally targeted Windows platform only.
Bifrost, also known as elf.bifrose, is a Linux malware family operated by BlackTech.
Background
A Linux port of the bifrose malware, which initially ran only on Windows. As a backdoor it can manage files, launch or terminate processes, and open a remote shell. Its communications are protected with a modified RC4 cipher.
Source: Malpedia (Fraunhofer FKIE).