New Variant of Buer Malware Loader Written in Rust to Evade Detection

By Kevin Townsend on May 04, 2021
A new variant of the Buer malware loader has been detected, written in Rust. The original version is written in C. Rust is efficient, easy-to-use, and an increasingly popular programming language – Microsoft uses it, and joined the Rust Foundation in February 2021.
Researchers at Proofpoint identified the new variant in early April 2021, and named it RustyBuer. Like Buer, it works as a downloader to distribute other malware to compromised systems. The most likely reason for the development of a Rust variant is to evade anti-malware detections that are based on features of the malware written in C.

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