Versatile and infectious: Win64/Expiro is a cross‑platform file infector
Recently, our anti-virus laboratory discovered an interesting new modification of a file virus known as Expiro which targets 64-bit files for infection. File-infecting viruses are well known and have been studied comprehensively over the years, but malicious code of this type almost invariably aimed to modify 32-bit files. One such family of file viruses, called