The malware uses thousands of partner websites to spread malvertising code.
The malvertising-focused trojan known as Shlayer has burbled to the top of the malware heap when it comes to targeting Mac users. It made up 29 percent of all attacks on macOS devices in Kaspersky’s telemetry for 2019, making it the No. 1 Mac malware threat for the year. To spread, it has been swindling visitors to websites with millions of visitors, especially YouTube and Wikipedia, into clicking on malicious links.
Shlayer is a trojan downloader, which spreads via fake applications that hide its malicious code, according to Kaspersky. Its main purpose is to fetch and install various adware variants. These second-stage samples bombard users with ads, and also intercept browser searches in order to modify the search results to promote yet more ads.
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