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Zeus Botnet Victims |
McAfee reported that the
financially-oriented malware was by far the largest botnet on the web,
claiming some 57 percent of botnet infections the company logged thus
far in 2013. According to McAfee, Zeus and its variants account for some
57.9 percent of all botnet infections. No other botnet on the list
logged more than a nine percent share.
Following its first major outbreaks in 2009, the Zeus malware has long been a thorn in the side of the cybersecurity community.
Renowned for its ability to operate
without alerting users, Zeus infections reside locally on the victim's
PC and inject code directly into browser before a page is displayed.
This allows Zeus variants to add data input fields or redirect
transmissions from an otherwise legitimate website.
According to McAfee researcher Neeraj
Thakar, the polymorphic nature of Zeus, which allows the malware to
constantly change its own code, makes detecting the malware's signature
all but impossible in the wild.
"Bot masters have become so advanced and
organised that they can churn out thousands of undetectable and unique
malware binaries each day,"
"That coupled with the ability to rapidly
change the control-server hosting infrastructure allows them to stay
active longer without being taken down."
The spread of Zeus continues despite efforts by security vendors to remove the various botnets built on the platform. Microsoft recently sued two men in the UK over their involvement in Zeus botnets.
Still, McAfee estimates that as many as
37 percent of the 8.5 million malware payloads it has analysed this year
are linked to known botnets, largely variants on Zeus.
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