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Ever evolving, the Conficker worm has gained the ability to download updates and malware from a select handful of randomly generated domains, the ability to spread over networks by hacking weak passwords, peer to peer communications between infected computers and transmission via USB. After 10 million+ infections, the worm will be updated again April 1.  (Source: Cool Circuit)
The worm that won't go away will get an upgrade on April 1

The Conficker worm has been wreaking havoc on internet users ever since it climbed out of its slimy hole in the internet's dark nether-regions back in 2008.  Now the worm is about to get even more dangerous when it receives its latest refresh in a series of periodic updates on April 1.  Security officials are bracing for the impact that the upgrade might have.

Either diabolical or brilliant, it's the Conficker worm's unique design that allowed it infect over 8 million business computers last year and scores of other individual users.  The worm, like many viruses, is regularly evolving thanks to periodic downloads.  However, the techniques it uses to do so are rather unique -- it cleverly creates thousands of false domains daily to throw off investigators. On the update day, it selects 500 correct domains out of the 50,000 candidates to download malware and updates from.

Pierre-Marc Bureau, a researcher at Eset says that this has helped the virus evolve from an initial novice-seeming threat targeting a flaw in Windows services into a large scale menace.  States Mr. Bureau, "From a high-level perspective, the 'A' variant gave the impression [of being] a 'test run'.  It had code that probably was not meant to be spread globally. For example, it was checking for the presence of an Ukrainian keyboard or Ukrainian IP before infecting a system."

The first run also contained a false lead -- it tried to download and execute a file called loadav.exe.  This led security research to believe it was just one of a pack of malware programs trying to peddle fake antivirus software.  It turned out to be a red herring -- the file was never uploaded and the next generation did away with the feature.

In the second version, the worm continued to spread through Windows Services on unpatched machines.  However, the update also granted it the power to spread over network shares by trying to log in autonomously into network machines with weak passwords.  It also gained the ability to load itself onto USB sticks connected to infected machines, gaining another means of transmission.  The scanning speed for machines to infect was greatly optimized -- in short the worm had become a real big problem.

Finally, the worm got its third update, becoming the Downadup virus as it’s now known.  The latest version added peer-to-peer communication between infected systems.  It also added new domain-generation algorithms to help it disguise where it was receiving its updates from.

At this point the worm is already a full scale threat, and there's no telling what might happen with the next update.  Describes Mr. Bureau, "During the last week, 3.88 percent of our users have been attacked by Conficker, either because they accessed an infected device or by a network attack.  The percentage is very high and shows that a high number of computers are presently infected and that the worm is still spreading."

Estimates of the number infected machines vary greatly, but most experts agree that over 10 million computers, largely in the business sector were compromised last year.  The number is large enough that Microsoft, which already has offered a bounty for the worm's writers, and AOL are teaming up to trying to weed out the domains it uses.  However, they face an uphill battle due to the vast number of domains the worm generates.  And law enforcement and security experts are no closer to having any clue what individual or individuals are writing the Conficker code.

Meanwhile the Conficker continues to spread and get smarter.  Its actions leave little doubt in the security community -- it's creating an army of infected machines, one that could do serious damage if unleashed.

Adriel Desautels, CTO of Netragard states, "I don't think that the threat comes from the worm itself, it comes from the people that are in control of the mass of Conficker-infected systems.  Those people have an immensely powerful weapon at their disposal, and that weapon threatens all of us."

April 1 will see the attacks taken to the next level -- and it’s anyone's guess what capabilities it might gain.



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By goku on 3/28/2009 9:03:19 AM , Rating: 0
I scan remotely due to the overhead of an Antivirus program has when running on said machine. I have the Antivirus on the file server because that's all it is, a file server, hosting files which may or may not be infected, and it doesn't have too much traffic on it. It scans the files probably once a week, during a time when there is no activity. When I feel like it, I've had it scan, over the network my other machines and each time I turn up nothing, reconfirming the fact I either don't need an Anti Virus or that they're just not that effective.

When I DID have a virus, the Antivirus didn't pick it up (I've tried various programs, and each misses what the other detects). Since I detected the virus but the program did not I had to remove it myself. Having an Antivirus is great on a low load, non primary system, being able to scan large numbers of files before they've executed and have infected a machine (like when you download a program off the internet).

But having it scan each and every file you open all the time really slows down a machine and when it isn't able to detect all viruses, allowing the machine to get infected anyways, what's the point of the performance penalty anyway? If the patches by Microsoft and the Antivirus utilities out there are incapable of preventing infection, then I'd have to say it's pretty pointless.

Oh and about the vaccination, one thing you should know is that vaccinations only work in specific strains, if you get one that isn't in the vaccination, then it's completely useless.

Like I said, Antivirus and Microsoft's security updates are like vaccinations, unless you're "lucky enough" to get "infected" by the very thing the Antivirus and patches and vaccinations are targeted towards, they work great, but it's the ones that they don't know about, and aren't targeting simply due to ignorance of is where you get hit, getting you nowhere and forcing you to disinfect a machine all by yourself..

I don't get infections that often anyhow so it isn't an issue for me, but when I do get one, there isn't any help for it anyways. Ask yourself this, would you go through all the work and misery to prevent infection if you knew you were going to get infected whether you liked it or not? The antivirus and the service packs have caveats to them that simply aren't worth it, ESPECIALLY when you consider the fact that they're not 100% or even 99% effective!


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