Backdoor Targeting MacOS Users Discovered

Bitdefender warns about the existence of a backdoor affecting Mac computers that could be related to a ransomware group acting on Windows devices.

This is Trojan.MAC.RustDoor, a hitherto undocumented malware family that as its name suggests is written in the Rust programming language.

This, as well as the use of common domains, brings it close to the ALPHV/BlackCat ransomware. Security experts have detected that three of the four command-and-control servers in the campaign against macOS, active since the fall, were previously associated with attacks against Windows system clients.

By exploiting this backdoor, cybercriminals have the opportunity to steal files, archive them and upload them to the command and control center.