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How CryptoWall ransomware works

We’ve recently seen an uptick in clients getting hit by the CryptoWall ransomware, with the common thread of the client receiving an email message about a resume and clicking an attachment.  While you may think you are simply retrieving a .jpg image file, by leveraging creative code behind the scenes, the file is actually a Windows executable file that delivers the ransomware to your system, compromising your files.

For more information, the following is a good read on the mechanics of how that simple act of clicking the wrong attachment file can bring havoc to your computer – it may seem a little “techy” in spots, but demonstrates well how ransonware works under the hood:

https://www.trustwave.com/Resources/SpiderLabs-Blog/Cryptowall-and-phishing-delivered-through-JavaScript-Attachments/