According to a recent finding, cybersecurity researchers at Bitdefender have identified a concerning development in the growing pool of threats, as a new backdoor named Trojan.MAC.RustDoor is targeting macOS users. This particular threat bears connections to the nefarious ransomware family known as BlackCat/ALPHV, which has traditionally focused on Windows systems.
The Trojan.MAC.RustDoor operates by disguising itself as an update for the widely-used Visual Studio code editor, a tactic commonly employed by cybercriminals to deceive unsuspecting users. What sets this backdoor apart is its use of the Rust programming language, making it a unique and sophisticated threat in the macOS workings. Bitdefender’s advisory reveals that various iterations of this backdoor have been active for at least three months.
The malware’s operating method involves collecting data from users’ Desktop and Documents folders, including personal notes, which are then compressed into a ZIP archive. Subsequently, this sensitive information is transmitted to a command-and-control (C2) server, giving the attackers unauthorised access to the compromised systems.
Bitdefender researcher Andrei Lapusneau, in the advisory, emphasises that while there is not enough information to definitively attribute this campaign to a specific threat actor, certain artefacts and indicators of compromise (IoCs) suggest a possible link to the BlackBasta and ALPHV/BlackCat ransomware operators. Notably, three out of the four identified command-and-control servers
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