Hot on the heels of a recent hack in which 10,000 sites were compromised, researchers have disclosed a new large-scale attack.
Researchers at McAfee estimated that the attack has been active for roughly one week, and in that time frame has managed to place itself on roughly 200,000 web pages.
Rather than attempt to exploit browser vulnerabilities, the attack attempts to trick a user into manually launching its malicious payload.
"This contrasts [Thursday’s] attack in that the vast majority of those were active server pages (.ASP)," explained McAfee researcher Craig Schmugar on a company blog posting.
"The ASP attacks are different than the phpBB ones in that the payload and method are quite different. Various exploits are used in the ASP attacks, where the phpBB ones rely on social engineering."
The infected pages bring up what appears to be a pornographic web site. Upon loading the page, a 'fake codec' social engineering attack is attempted. The user is told that in order to view the movie on the page, a special video codec must be installed.
The user then downloads a trojan program which installs a malware package on the users system then delivers a fraudulent error message telling the user that the supposed codec could not be installed.
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