In particular, contents can go into the Windows startup folder, causing them to start at the next reboot. When creating an archive, it turns out, one can set up rules to unpack the contents into the system folder. This year also saw the discovery of an interesting WinRAR feature. Other scammers were sighted a couple of weeks later sending archives with the Qbot Trojan, which specializes in stealing data. For example, ZIP files teasingly titled Love_You0891 (the number varied) were used by attackers to distribute GandCrab ransomware on the eve of St. ZIP and RAR archivesĬybercriminals love to conceal malware in archives. In this post we explore this year’s top malware-hiding files. Malware distributors have their own “pet” formats. To provoke the recipient into opening a dangerous file, it is usually masked as something interesting, useful, or important: a work document, a great offer, a gift card bearing the logo of a well-known company, and so on. But every once in a while, there is a malicious file attached to one of the messages. It is mostly trite advertising - annoying, but generally harmless. Spammers send billions of messages every single day.
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