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Help!! Am I infected??


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#1 Leanie

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Posted 02 November 2009 - 10:43 AM

A few days ago my internet stopped working.. I have dsl and have called numerous times for tech help from my provider. One peron said I may have a virus, so I scanned my pc and found this: 10/30/2009 10:06:10 AM Detected: Virus.Win32.Virut.ce Malwarebytes' Anti-Malware C:\System Volume Information\_restore{C5941BA0-7954-431B-BB37-2E1ABEED1085}\RP85\A0020866.exe

I have Kaspersky 9 and it said it disinfected it. I can connect to the internet sometimes. I have winxp. How do I know if I got rid of the virus completely and if so why isn't my modem working like it use to?

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#2 quietman7

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Posted 02 November 2009 - 12:32 PM

I'm afraid I have very bad news.

Virut is 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.

With this particular infection, the safest solution and only sure way to remove it effectively is to reformat and reinstall the OS.

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). The Virux variant 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, .htm, .html, .xml ). 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 often contracted and spread by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and a major source of system infection.

...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

However, the CA Security Advisor Research Blog 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.

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:Since virut is not effectively disinfectable, your best option is to perform a full reformat as there is no guarantee this infection can be completely removed. In most instances it may have caused so much damage to your system files that it cannot be completely cleaned or repaired. In many cases the infected files cannot be deleted and anti-malware scanners cannot disinfect them properly. Many experts in the security community believe that once infected with this type of malware, the best course of action is to 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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#3 Leanie

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Posted 02 November 2009 - 03:07 PM

Do I really need to do that? Unlike alot of the other topics I've read about this virus, KIS only found it in one folder. After rebooting I ran KIS again but in safe mode and it didn't find anything now, plus my pc is running faster now and I just plugged a different router in and it works, the other one won't work. I would think KIS would find the virus and tell me it can't disinfect it.

#4 quietman7

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Posted 02 November 2009 - 03:20 PM

KIS detected the threat as _restore{C5941BA0-7954-431B-BB37-2E1ABEED1085}\RP85\A0020866.exe. That file is in the System Volume Information Folder (SVI) which is a part of System Restore. The *** after RP represents a sequential number automatically assigned by the operating system. The ***** after A00 represents a sequential number where the original file was backed up and renamed except for its extension. To learn more about this, refer to:System Restore is the feature that protects your computer by creating backups (snapshots saved as restore points) of vital system configurations and files. These restore points can be used to "roll back" your computer to a clean working state in the event of a problem. This makes it possible to undo harmful changes to your system configurations including registry modifications made by software or malware by reverting the operating systems configuration to an earlier date. The SVI folder is protected by permissions that only allow the system to have access and is hidden by default on the root of every drive, partition or volume including most external drives, and some USB flash drives. For more detailed information, read System Restore Overview and How it works and How antivirus software and System Restore work together.

System Restore is enabled by default and will back up the good as well as malicious files, so when malware is present on the system it gets included in restore points as an A00***** file. If you get a detection on a file in the SVI folder that means it was one your system in other locations.

If you insist on trying to fix this infection instead of following our advice to reformat and reinstall your operating system, there are some tools and various rescue disks available from major anti-virus vendors which you can try. From what I have read, seen, and tried its virtually impossible to completely remove and just a waste of time. You can try booting from every rescue disk you can find but they will likely leave you computer in an unbootable state in as a result of futile attempts to repair system files and drivers. 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.

Since the computer is bootable, you can try disinfection through a combination of the following tools:
  • Dr.Web CureIt.
  • Norman Malware Cleaner.
  • VIPRE Rescue Program - the size of the downloaded application is large. This is a utility designed to scan and clean a computer which is so badly infected that most programs cannot run. Virus definitions are included and the program is self-running once executed. Be sure to print out and follow the instructions provided on the same page for running under Windows or with the Command Line option from Safe Mode with Command Prompt.
  • AVG Win32/Virut Remover. The AVG tool was last updated in August 2008 and is not very effective for the reasons I indicated above.
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.
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#5 Leanie

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Posted 03 November 2009 - 11:56 AM

I will probably reformat and reinstall windows when I get the chance this weekend... after running KIS I noticed it popped up and said C:\WINDOWS:AstInfo was hidden but didn't give me any options on what to do. I'm assuming this may be a virus? Also, I have never had to reformated this pc, this may be a stupid question but how do I go about doing that.. I have a Gateway.

#6 quietman7

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Posted 03 November 2009 - 05:22 PM

If you're not sure how to reformat or need help with reformatting, please review:These links include step-by-step instructions with screenshots:Vista users can refer to these instructions:Don't forget you will have to go to Microsoft Update and apply all Windows security patches after reformatting.

Note: If you're using an IBM, Sony, HP, Compaq, Toshiba or Dell machine, you may not have an original XP CD Disk. By policy Microsoft no longer allows OEM manufactures to include the original Windows XP CD-ROM on computers sold with Windows preinstalled. Instead, most computers manufactured and sold by OEM vendors come with a vendor-specific Recovery Disk or Recovery Partition for performing a clean "factory restore" that will reformat your hard drive, remove all data and restore the computer to the state it was in when you first purchased it. Also be sure to read Technology Advisory Recovery Media. If the recovery partition has become infected, you will need to contact the manufacturer, explain what happened and ask them to send full recovery disks to use instead..

For a Gateway computer, see:
Restore System to Factory Default
Using Gateway System Recovery
Gateway Tech Support should be able to walk you through, step by step.
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#7 Leanie

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Posted 03 November 2009 - 07:10 PM

Thank you very much!

#8 quietman7

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Posted 03 November 2009 - 11:02 PM

You're welcome.

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. Porn sites can lead to the Trojan.Mebroot MBR rootkit and other dangerous malware. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications.Beware of Rogue Security software as they are one of the most common sources of malware infection. They infect machines by using social engineering and scams to trick a user into spending money to buy a an application which claims to remove malware. For more specific information on how these types of rogue programs and infections install themselves, read: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

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