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Since the new website cookie usage regulations in the EU have come into place, many websites have added a warning on their website about how they use cookies on it and as well, ask for your consent.

This has caused many website owners to look for an easy way to implement this and we recently found one website which was using JavaScript from cookiescript[.]info to display this cookie consent request on their website. When visiting the website for the first time via Chrome, you would get a JavaScript alert saying: “Your computer is infected. You have to check it with antivirus.”

You can try to click Cancel or OK but in both cases you are going to get redirected to a website trying to convince you to buy antivirus software which could be malware. It looks like the website cookiescript.info is the one distributing this malware to unsuspecting users.

The malware we caught, attempted to load JavaScript from here:

That link just redirects to this URL:

Here is some of the code inside this JavaScript:

As you can see, it’s loading some additional JavaScript; this time it's “hxxp://cdn[.]cookiescript[.]info/libs/detect_ga.js”, and is the one responsible for detecting the user agent, attaching the cookie to your browser. Here is some of the code: