Researchers say ransomware could be on the horizon if success continues
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The fear is that despite only dropping malware now, the proliferation of these campaigns could be a boon to initial access brokers, offering an effective route to infect end users with ransomware. It's the first major fake-browser-update campaign to emerge since SocGholish and typically leads to the NetSupport RAT being installed on the victim's machine.
Proofpoint characterized ClearFake as a campaign that drops infostealer malware and is able to tailor lures not just by the user's browser, but by their language too, widening its pool of targets.Each campaign differs slightly in the way in which it delivers the lure and malware payload at the end, but they tend to follow a three-stage structure and all tailor their lures based on the user's machine and browser.
Proofpoint said the attack earns success because it understands the cybersecurity training most people receive, and uses that to craft a campaign that leans on end users' inherent trust of legitimate domains and brands. Despite using a social engineering element, researchers noted that phishing isn't often used in any of the four campaigns – attackers aren't sending direct emails with links to the compromised sites, they're being shared by people over email during the course of their normal online activity.
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