A variant of the Buer malware, which is being distributed in emails disguised as DHL support shipping notices, comes with a fresh code rewrite in the popular Rust language and looks like it may be in the process of prepping for rental to other cybercrooks.
Using the increasingly popular, efficient and easy-to-use Rust programming language will help the malware to slip past detection, Proofpoint researchers said in a post on Monday morning. The rigged emails are coming in two flavors. One is written in the more typical C programming language. The other’s written in Rust: a tactical shift that will help it tiptoe past detection in order to get more clicks.