New ReaderUpdate malware variants target macOS users
New ReaderUpdate malware variants, now written in Crystal, Nim, Rust, and Go, targets macOS users, SentinelOne warns. SentinelOne researchers warn that multiple versions of the ReaderUpdate malware written in Crystal, Nim, Rust, and Go programming languages, are targeting macOS users. ReaderUpdate is a macOS malware loader that has been active since 2020, the malicious code […]
New ReaderUpdate malware variants, now written in Crystal, Nim, Rust, and Go, targets macOS users, SentinelOne warns.
SentinelOne researchers warn that multiple versions of the ReaderUpdate malware written in Crystal, Nim, Rust, and Go programming languages, are targeting macOS users.
ReaderUpdate is a macOS malware loader that has been active since 2020, the malicious code was first seen as a compiled Python binary and was spotted delivering Genieo adware.
it remained largely undetected until resurfacing in late 2024 with new variants written in Crystal, Nim, and Rust.
1/ As the holiday season approaches, we’ve identified a new suspicious binary written in Nim. It contacts a C2 server, gains persistence, and collects system information. While only one sample is currently detected by antivirus tools, many others remain undetected. Read more 
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