Researchers have discovered a new backdoor targeting macOS that appears to have ties to an infamous ransomware family that historically targets Windows systems.

Researchers at Bitdefender say the so-called Trojan.MAC.RustDoor is likely linked to BlackCat/ALPHV. The newly discovered backdoor is written in Rust coding language and impersonates an update for Visual Studio code editor.

Bitdefender in its advisory said there have been multiple variants of the new backdoor, and that it has been in action for at least three months.