Researchers from Trustwave’s SpiderLabs discovered the spam emails, which come with an 'Install Latest Microsoft Windows Update now!' or 'Critical Microsoft Windows Update!’ subject line. Microsoft, of course, doesn’t send out Windows updates through email.

The messages contain just one sentence, and the first word begins with two capital letters, making it appear even less legitimate. Recipients are asked to click an attachment to download the ‘update.’ While the file has a .jpg extension, it’s actually an executable .NET downloader that delivers malware to the infected system.

Victims will then find a ransom note named "Cyborg_DECRYPT.txt" on their desktop, which demands $500 to decrypt the files.

Statistics: Posted by burger2227 — Thu Nov 21, 2019 8:33 am