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Win32/Virut MOVED


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#1 d7e7r7

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Posted 02 August 2009 - 05:03 PM

Hi guys,
I'm new here, this is my first post but I know more than your average Tom, Dick or Harry about PC's but right now I am stumped so have taken to asking the professionals (AKA you guys). I am (was) runnning Windows Vista and know that I have a virus. First i couldn't update my Kaspersky Internet Security then I realised I couldn't access any security related sites. I came accross this forum and tried to run ComboFix but it said this file has been corrupted you have the Virut virus, please download a clean version and try again. Through research I have ascertained this virus infects any and all .exe files you try to run or that are running. I am writing this on the same PC but on my other hardrive which has Windows XP on. Right now Dr. Wev Cureit is busy running. I tried rmvirut.eve and it cleaned quite alot but there were more files that it couldn't clean than it did clean. Now when I try to boot from my Vista hard drive it says an unauthorized change has been made... and I can't do anything, I can however go into Safe Mode.
sorry for the long explanation but hopefully someone here can help me?
Thanx,
David

Edited by garmanma, 02 August 2009 - 10:19 PM.


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#2 Budapest

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Posted 03 August 2009 - 04:51 PM

If you have Virut, generally you will need to reinstall Windows to get over the problem.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#3 d7e7r7

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Posted 03 August 2009 - 04:58 PM

If you have Virut, generally you will need to reinstall Windows to get over the problem.

maybe generally... but alls good... got it fixed just a few moments ago, so relived, gonna let KAV run on deep scan tonight and see what it brings up...
how do i delete this post or isn't it necessary?

#4 Budapest

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Posted 03 August 2009 - 05:09 PM

You were lucky then :thumbsup:

No need to delete the post.
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#5 boopme

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Posted 03 August 2009 - 07:00 PM

Hello, I guess lucky really depends on what you use the PC for and I wish you well.

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. Other variants of virut can even penetrate and infect .exe files within compressed files (.zip, .cab, rar). 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 and in some instances can disable Windows File Protection. 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 longer virut remains on a computer, the more critical system files will become infected and corrupt so the degree of infection can vary.

The virus disables Windows File Protection by injecting code into the "winlogon.exe" process that patches system code in memory.

CA Virus detail of W32/Virut

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:
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#6 d7e7r7

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Posted 05 August 2009 - 03:01 PM

I have the problem now that explorer.exe does not run at start up and i have to run it via the task manager. also when i try open a .txt file i get a message saying that C:\Users\David\Desktop\blablablatxt is not a valid Win32 application. if i right click and choose open with notepad then it opens fine.

any help would be greatly appreciated...

#7 Budapest

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Posted 05 August 2009 - 04:58 PM

If I was you I would format and reinstall Windows.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#8 boopme

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Posted 05 August 2009 - 06:42 PM

If you insist on trying to fix this infection instead of following our advice to reformat and reinstall your operating system, there are various rescue disks available from major anti-virus vendors which you can try. Keep in mind, even the vendors like Kaspersky say there is no quarantee that some files will not get corrupted during the disinfection process. In the end most folks end up reformatting out of frustration after spending hours attempting to repair and remove infected files. IMO the safest and easiest thing to do is just reformat and reinstall Windows.

Bleeping Computer DOES NOT assume any responsibility for your attempt to repair this infection using any of the following tools. You do this at your own risk and against our advice.

These are links to Anti-virus vendors that offer free LiveCD or Rescue CD utilities that are used to boot from for repair of unbootable and damaged systems, rescue data, scan the system for virus infections. Burn it as an image to a disk to get a bootable CD. All (except Avira) are in the ISO Image file format. Avira uses an EXE that has built-in CD burning capability.If you are not sure how to burn an image, please read How to write a CD/DVD image or ISO. If you need a FREE utility to burn the ISO image, download and use ImgBurn.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#9 d7e7r7

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Posted 06 August 2009 - 01:11 AM

If you insist on trying to fix this infection instead of following our advice to reformat and reinstall your operating system, there are various rescue disks available from major anti-virus vendors which you can try. Keep in mind, even the vendors like Kaspersky say there is no quarantee that some files will not get corrupted during the disinfection process. In the end most folks end up reformatting out of frustration after spending hours attempting to repair and remove infected files. IMO the safest and easiest thing to do is just reformat and reinstall Windows.

Bleeping Computer DOES NOT assume any responsibility for your attempt to repair this infection using any of the following tools. You do this at your own risk and against our advice.

These are links to Anti-virus vendors that offer free LiveCD or Rescue CD utilities that are used to boot from for repair of unbootable and damaged systems, rescue data, scan the system for virus infections. Burn it as an image to a disk to get a bootable CD. All (except Avira) are in the ISO Image file format. Avira uses an EXE that has built-in CD burning capability.

If you are not sure how to burn an image, please read How to write a CD/DVD image or ISO. If you need a FREE utility to burn the ISO image, download and use ImgBurn.


Thanks I will try one of those LiveCD's. Will it help even if I run various antivirus programs when booted of another hardrive on my PC (not the one that was infected). I would love to format and do a clean install but it's not economically viable for me as I would have to buy a backup drive for all my photographs. I feel my pc is virus free, I may be wrong so will run the LiveCd's anyway buy was loking more for a program that will fix any registry changes the virus would have made that are preventing my explorer.exe from running.

#10 Budapest

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Posted 06 August 2009 - 01:16 AM

I'm not trying to annoy you, but if those photos are important you need to have a backup of them anyway. Hard drives die all the time - I've seen it many times.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#11 d7e7r7

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Posted 06 August 2009 - 01:18 AM

I'm not trying to annoy you, but if those photos are important you need to have a backup of them anyway. Hard drives die all the time - I've seen it many times.


No you're not at all, I'm the one that came here for help. The problem is just that it's expensive to go and buy a backup hard drive with the economy the way it is right now and me being a student and all...

#12 Budapest

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Posted 06 August 2009 - 01:25 AM

You should try one of those Live CDs that boopme recommended in post #8.

Also, there are some websites that offer free online file storage. I think Windows Live now offers 25GB of free photo storage.
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#13 Stang777

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Posted 06 August 2009 - 01:58 AM

You could just get a USB flash drive. Walmart.com shows a SanDisk 8GB Cruzer flash drive for about 20 bucks. They also have 4 GB Cruzer flash drives for 12 bucks. I have 2 SanDisk 2 GB Cruzer Micro flash drives and I love them

http://www.walmart.com/catalog/product.do?...uct_id=11828080

Edited by Stang777, 06 August 2009 - 02:15 AM.


#14 d7e7r7

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Posted 06 August 2009 - 05:43 AM

You should try one of those Live CDs that boopme recommended in post #8.

Also, there are some websites that offer free online file storage. I think Windows Live now offers 25GB of free photo storage.


This would work but here in South Africa we have a cap which limits you to 1 gig of data transfer a month, so this is out...


You could just get a USB flash drive. Walmart.com shows a SanDisk 8GB Cruzer flash drive for about 20 bucks. They also have 4 GB Cruzer flash drives for 12 bucks. I have 2 SanDisk 2 GB Cruzer Micro flash drives and I love them

http://www.walmart.com/catalog/product.do?...uct_id=11828080


this could work but with 96.4 gigs of photos i'd need to buy 12 8 gig flash drives and here they are R177.80 ($22.22) * 12 = R2133.6 ($266.64).

To outline my basic problem. When I get to the login screen and enter my password there is just a blank white screen so I Ctrl Alt Delete and start the Kaspersky service and explorer.exe via the task manager, then my desktop icons and everything loads fine...

#15 Budapest

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Posted 06 August 2009 - 04:06 PM

Right click on the C drive in Explorer and go Properties > Tools > Check Now (under Error Checking). Check both boxes then click "Start Now". A message will pop up saying that Error Checking will run after you restart the computer. Restart the computer and Error Checking will run automatically after the restart. After it’s finished it will restart into Windows automatically.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




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