macOS users targeted with new Tarmac malware

By ZDNet

11 October 2019

Security researchers have discovered a new piece of Mac malware; however, some of its purpose and full features will remain a mystery for a little longer.

Named Tarmac (OSX/Tarmac), this new malware was distributed to macOS users via online malvertising (malicious ads) campaigns.

These malicious ads ran rogue code inside a Mac user's browser to redirect the would-be victim to sites showing popups peddling software updates -- usually for Adobe's Flash Player.

Victims who fell for this trick and downloaded the Flash Player update would end up installing a malware duo on their systems -- first the OSX/Shlayer malware, and then OSX/Tarmac, launched by the first.

Distributed Since January 2019

This malvertising campaign distributing the Shlayer+Tarmac combo started in January this year, according to Taha Karim, a security researcher at Confiant.

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