Microsoft: 2.2 million US PCs are in a botnet

By on October 14, 2010, 4:23 PM
Microsoft has released its ninth Security Intelligence Report, providing a detailed look at botnets over the first half of 2010. Botnets controlled almost 2.2 million computers in the US during the second quarter of 2010 -- nearly identical to the first quarter. While that's more than any other region in total infections, South Korea had the highest percentage of bot-controlled systems at 14.6 out of every 1,000 PCs, which compares to 5.2 per 1,000 in the US. Spain was the second most infected, with 12.4 systems out of every 1,000 under control of a botnet. Mexico trailed closely with 11.4 per 1,000, but the remaining countries drop to similar or lower levels than the US. In all, Microsoft's antimalware software detected and removed bots from 6.5 million computers worldwide -- two times more than the year-ago period.


Rimecud was the most prevalent botnet according to Microsoft. "Rimecud is a 'kit' family: different people working independently use a malware creation kit to create their own Rimecud botnets. Rimecud is the primary malware family behind the so-called Mariposa botnet, which infected millions of computers around the world in 2009 and 2010," the report said. "Rimecud is a backdoor worm that spreads via fixed and removable drives, and by sending malicious hyperlinks to a victim's contacts via several popular instant messaging programs. Rimecud can be commanded to take a number of typical botnet actions, including spreading itself via removable drives, downloading and executing additional malware, and stealing passwords." A 23-year-old Slovenian citizen was arrested in July for being suspected of writing the malware.




User Comments: 12

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TomSEA TomSEA, TechSpot Chancellor, said:

Man, those are some jaw-dropping figures. Interesting that most bots come out of Russia and Eastern Europe, yet they rank at the lowest of infected PC's.

Staff
Rick Rick, TechSpot Staff, said:

That's actually not nearly as many as I expected...

Richy2k9 said:

hello ...

yet that's scary ....

cheers!

gobbybobby said:

Y so many in the US?

A 23-year-old Slovenian citizen was arrested in July for being suspected of writing the malware

1 person 2,000,000+ Computers, thats a claim to fame.

DeepThought007 said:

That's why I run a Linux box.

I scan once in a while. Never had an infection.

Who is this 23-year-old Slovenian citizen?

midimench said:

You run Linux based on your fear of infection on a Windows system? That's your only reason?

Guest said:

running a linux box for fear of virus is like driving a yugo in fear of gas running out........

Guest said:

90% of all statistics are made up on the spot

Guest said:

You are probably correct in your suspicions - I suspect many go unreported due to various factors involved in the sampling techniques used and the statistical models employed to analyze the data.

en0nym0us en0nym0us said:

Maybe Microsoft should start working on a secure OS.

Guest said:

MAC systems are virus-proof OS. why can't Microsoft be?

They are doing this intentionaly in order to make business for the Anti-Virus companies. Thats it.

Lokalaskurar Lokalaskurar said:

MAC systems are virus-proof OS. why can't Microsoft be?

They are doing this intentionaly in order to make business for the Anti-Virus companies. Thats it.

Well really, if you wanted to target people's money, would you go for 20% of them, or ~70% of them? No harm meant, but Malware-writers are more into targeting a bigger sort-of defended bunch of people than a smaller non-defended array, and thus they all adapt their code for Windows.

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