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Drive-By Downloads: Malware's Most Popular Distribution Method

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Drive-By Downloads: Malware's Most Popular Distribution Method

After years of burying malicious software in email and portable storage media, attackers now favor quick downloads via legitimate websites, researcher says

Nov 12, 2010 | 09:54 AM

By Tim Wilson

DarkReading

A drive-by download typically begins by injecting a Web page with malicious code, often through JavaScript, Daswani explained. The code generally invokes a client-side vulnerability to deliver shell code, such as the JavaScript-based Heap Spray attack, to take control of the user's machine. From there, the attacker can send a "downloader," which is often custom, zero-day code that isn't recognized by traditional antivirus systems.

Once the downloader is in place, the attacker can deliver his malware of choice, Daswani said. Drive-by downloads are particularly effective for delivering code that can steal end user credentials (such as Zeus), launch a fake antivirus scam (such as Koobface), steal server-side administrative credentials (such as Gumblar), steal corporate secrets (such as Project Aurora), or collect fraudulent click revenue (such as clickbot.A), he noted.

http://www.darkreadi...cleID=228200810

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