If you get an email claiming to be from Microsoft about a Windows 10 update, don’t open it. It contains ransomware malware.
Security researchers from Trustwave’s SpiderLabs have discovered a new malicious campaign that spoofs Windows 10 update emails from Microsoft to infect user’s systems with the Cyborg ransomware.
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Recently, fake Microsoft Windows 10 Update emails were spammed with the following subject lines:
Install Latest Microsoft Windows Update now!
Critical Microsoft Windows Update!
NOTE: Microsoft pushes Windows updates through its OS (operating system) and never through emails.
What to do when you receive Windows 10 Update emails
When you receive this spam email, just don’t open & don’t download it. The email itself contains just one line of text which reads: “Please install the latest critical update from Microsoft attached to this email.” While the fake update attachment has a “.jpg” file extension, it is actually not a picture but instead is an executable file.
This executable file is a malicious .NET downloader that will deliver another malware to the infected system.
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So don’t open any email that claims to be from Microsoft.