Beware of e-mails that promise a fast and free “update to Windows 10”. Talos – the security team of the IT company Cisco – has come across a new scam of fraudsters, to cheer up unwary users so-called Ransomware. These are Trojans, which encrypt personal files of a computer, and only release them against a ransom payment. This is commonly referred to as extortion or extortion trojans.
The pest comes by e-mail attachment. The address is "update@microsoft.com". This works really, because the visible domain actually corresponds to the specifications of Microsoft. With tricks, however, such entries in the address field can be manipulated. As an example, only e-mail forms (on the Web) that could miss the wrong messages to be sent can be missed. As Talos found out, the e-mail comes from fraudsters from Thailand.
In the subject promises the e-mail a "Windows 10 Free Update". In the course of the large Windows 10 start, in which not everyone interested immediately found the free update, users can quickly be led to careless actions. Although the fraudsters have made a lot of effort with the address and the subject, the text clearly shows the intention to deceive the user. In addition to character errors (see screenshots on the Cisco blog), the user is referred to the appendix, in which a zip file lurks. This contains an exe file that plays the Trojan, which is difficult to remove.
Lesetipp: Windows 10 or Windows 7?
To not fall, remember: Microsoft distributes Windows 10 over Windows Update. An alternative would be ISO files via the Microsoft website or other reputable sources. A distribution with a dubious tool, which is also sent by e-mail, is very unlikely. If at all, then Microsoft refers to Windows Update by e-mail.
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