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All .exe files are infected - virus.win32.virut.ce


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#1 skylyre

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Posted 07 September 2009 - 03:33 PM

Hi, I'm new to the forum and I don't want to screw up my comp anymore than it is! So here's what's going on:

I currently run windows vista on an HP pavilion dv2000 laptop. I use AVG free for protection.

Today my bf went to seriall.com and dl something that was supposed to be a halo keygen or something (I know, he's an idiot moron)
He says that after he clicked the link to dl, the icon for it was on the desktop. He clicked to run it and then 3 porn icons appeared on the desktop. Then anti-virus windows popped up, I guess they looked like windows defender? Anyway, he just closed out of them and that's when I got up and saw what was going on.

Not much has been happening since then except that I can't seem to open control panel unless I'm in safe mode. The recycle bin has disappeared (I don't know if it was deleted). When I start up windows I get a msg that says Rundll32 is being prevented form running or something.

Right now I am running the Kaspersky free online scanner of my whole comp (not in safe mode), which is taking a long time. (At 11% after an hour and a half). I looked at the report though and I can see that tons of .exe files are all infected with virus.win32.virut.ce and C:\$recycle.bin has trojan downloaders in it.

So I'm not the most computer savvy and I'm not sure if I'm taking the right course of action here? What should I do, it definitely looks like I'm infected with something! I'm afraid to try and run or download anything without professional assistance.. :thumbsup:

skylyre
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#2 Blade

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Posted 08 September 2009 - 07:38 AM

Hello skylyre and :thumbsup: to BleepingComputer. I wish it were under better circumstances.

Your system is infected with a nasty variant of Virut, a polymorphic file infector with IRCBot functionality which infects .exe, .scr files, downloads more malicious files to your system, and opens a back door that compromises your computer. According to this Norman White Paper Assessment of W32/Virut, some variants can infect the HOSTS file and block access to security related web sites. Virux is an even more complex file infector which can embed an iframe into the body of web-related files and infect script files (.php, .asp, and .html). When Virut creates infected files, it also creates non-functional files that are corrupted beyond repair. In many cases the infected files cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files become corrupted and the system may become irreparable.

The virus has a number of bugs in its code, and as a result it may misinfect a proportion of executable files....some W32/Virut.h infections are corrupted beyond repair.

McAfee Risk Assessment and Overview of W32/Virut

There are bugs in the viral code. When the virus produces infected files, it also creates non-functional files that also contain the virus...Due to the damaged caused to files by virut it's possible to find repaired but corrupted files. They became corrupted by the incorrect writing of the viral code during the process of infection. undetected, corrupted files (possibly still containing part of the viral code) can also be found. this is caused by incorrectly written and non-function viral code present in these files.

AVG Overview of W32/VirutThis kind of infection is contracted and spread by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and an increasing source of system infection. However, the CA Security Advisor Research Blog says they have found MySpace user pages carrying the malicious Virut URL. Either way you can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired. When that happens there is nothing you can do besides reformatting and reinstalling the OS.

...warez and crack web pages are being used by cybercriminals as download sites for malware related to VIRUT and VIRUX. Searches for serial numbers, cracks, and even antivirus products like Trend Micro yield malcodes that come in the form of executables or self-extracting files...quick links in these sites also lead to malicious files. Ads and banners are also infection vectors...

Keygen and Crack Sites Distribute VIRUX and FakeAV

If your computer was used for online banking, has credit card information or other sensitive data on it, you should disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. You should change each password using a clean computer and not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router, you need to reset it with a strong logon/password so the malware cannot gain control before connect again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:There is no guarantee this infection can be completely removed. In some instances it may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Please read:Let me know if you have any questions.

~Blade

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#3 skylyre

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Posted 08 September 2009 - 10:13 PM

Thank You, Blade!

I was a mess yesterday when I saw all the files it was infecting and I ended up searching bleepingcomputer for similar cases to mine. When I saw what the Virut was all about, I restored my laptop to the factory settings. I think it was the compromised personal info that helped me make that decision right away.

Everything seems OK now that I've restored it. Just gotta spend some time rebuilding the laptop to my liking again...

Thank you Blade for responding with the detailed info, and also to the bleepingcomputer crew, this site is so helpful!

cheers,
skylyre
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#4 quietman7

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Posted 09 September 2009 - 11:18 AM

You're welcome on behalf of the Bleeping Computer community.

Tips to protect yourself against malware and reduce the potential for re-infection:Keep Windows and Internet Explorer current with all critical updates from Microsoft which will patch many of the security holes through which attackers can gain access to your computer. If you're not sure how to do this, see Microsoft Update helps keep your computer current.

Avoid gaming sites, porn sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs (i.e. Limewire, eMule, uTorrent). They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Malicious worms, backdoor Trojans IRCBots, and rootkits spread across P2P file sharing networks, gaming, porn and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans, and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications.Keeping Autorun enabled on USB (pen, thumb, jump) and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:Many security experts recommend you disable Autorun asap as a method of prevention. Microsoft recommends doing the same.

...Disabling Autorun functionality can help protect customers from attack vectors that involve the execution of arbitrary code by Autorun when inserting a CD-ROM device, USB device, network shares, or other media containing a file system with an Autorun.inf file...

Microsoft Security Advisory (967940): Update for Windows Autorun

• Finally, if you need to replace your anti-virus, firewall or need a reliable anti-malware scanner please refer to:
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