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Alert: New “RustDoor” Backdoor Targets Apple macOS Devices

New RustDoor backdoor has been targeting Apple macOS users since November 2023. It acts as a Microsoft Visual Studio update, affecting both Intel and Arm architectures. Distributed as FAT binaries containing Mach-O files, its initial access method remains unknown. They detected several variants, indicating active development since November 2, 2023. RustDoor can execute various commands to collect and upload files. The malware is likely linked to prominent ransomware families like Black Basta and BlackCat owing to overlaps in C2 infrastructure.



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