Worm infections spreading through computers, networks, pin drives are reaching in millions due to low profile security measures. In October 2008, different malicious computer programs like conficker, downadup and kido were discovered; these are the most common known malicious software attacking our computers. Antivirus firm F-secure estimated the amount of infected machines have reached the figure of 8-9 million. There has been several warning by experts about this figure that it can go far higher and they should install Microsoft MS08-067 patch and keep anti-virus software updated.
While in Interview with BBC, Graham Cluley, senior technology consultant told that the situation has never been this bad and outbreak on this scale had not been seen for quite some time. He also told that :
"Microsoft did a good job of updating people's home computers, but the virus continues to infect business who have ignored the patch update.
"A shortage of IT staff during the holiday break didn't help and rolling out a patch over a large number of computers isn't easy.
"What's more, if your users are using weak passwords - 12345, QWERTY, etc - then the virus can crack them in short order," he added.
"But as the virus can be spread with USB memory sticks, even having the Windows patch won't keep you safe. You need anti-virus software for that."
How worm spread in windows?
Microsoft has release the information about the working of worm spreading in the windows platform. First of all it searched for executable file called “services.exe” and gets embedded into it. “Services.exe” is windows file which performs important functions in windows. It then copy itself into window system folder “system32” with random file name but in extension of DLL file, it can be something like piftoc.dll etc, it normally named itself from 5 to 8 character, after naming it modifies the registry entries, listing important windows settings so that it could run infected ..DLL file as window default system file. When worm is up and running it creates HTTP server, it resets machine system restore point and starts to download files from different hacking sites and or start uploading crucial and personal information like name, password etc. Most malware uses predictable ways to download and upload files which are easy to locate and shut down. Whereas Conficker makes things way more complicated for finding and terminating its actions. According to antivirus firm F-secure this worn is programmed very complicated algorithm which in result generate hundreds of fake domain names such as abed.com,hturp.net etc. Out of which only one domain is used to download or upload data. Finding the site out of so many sites makes detection almost impossible procedure.
Alternatives
Interviewed by BBC, Kaspersky Lab's security analyst, Eddy Willems, said that a new strain of the worm was complicating matters.
"There was a new variant released less than two weeks ago and that's the one causing most of the problems," said Mr Willems
"The replication methods are quite good. It's using multiple mechanisms, including USB sticks, so if someone got an infection from one company and then takes his USB stick to another firm, it could infect that network too. It also downloads lots of content and creating new variants though this mechanism."
"Of course, the real problem is that people haven't patched their software," he mentioned.
According to Microsoft malware has infected millions of computers in almost of every parts of the world including in China, Brazil, Russia, and India having the highest number of victims.
Microsoft also says, they have detected millions of unique IP infected, they can be deinfected but it will bring issue of unauthrized access issue.
Recommendations: We have good chances for protecting our computers by making sure that we update crucial security updates at any cost, and we use antivirus programs and keep its signature file updated for maximum protection.
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