Malware
ACBackdoor
A Linux backdoor that was apparently ported to Windows.
ACBackdoor is a Linux malware family.
Background
ACBackdoor is a Linux backdoor that was seemingly ported over to Windows; this entry covers the Linux variant. The Linux build appears to be the original, with the Windows port arriving afterward and lacking some of its features. On Linux the backdoor provides persistence along with certain process-manipulation capabilities, while both editions reportedly support command-line access, program execution, and self-updating.
Source: Malpedia (Fraunhofer FKIE).