Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Virus In System File "cnmvs7.dll"


  • This topic is locked This topic is locked
7 replies to this topic

#1 chitrang

chitrang

  • Members
  • 8 posts
  • OFFLINE
  •  
  • Local time:08:26 PM

Posted 03 April 2008 - 10:18 PM

Hi frendz

I am using Avast antivirus. Whenever I restart my laptop and try to open a folder it comes out
with a warning about this virus called cnmvs7.dll. The path shows in System32 folder. When
I try to delete this file it shows access denied. I tried everything. I tried to run antiviurs in
safe mode also but didnt work at all. I dont know what to do. I really need your help plz.
Any suggestions????

BC AdBot (Login to Remove)

 


m

#2 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 50,579 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:07:26 AM

Posted 04 April 2008 - 10:03 AM

Go to jotti's virusscan or virustotal.com. In the "File to upload & scan" box, click the "browse" button and locate the following file:
C:\WINDOWS\System32\cnmvs7.dll <- this file
Click "Open", then click the "Submit" button.
-- Post back with the results of the file analysis in your next reply.
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif

#3 chitrang

chitrang
  • Topic Starter

  • Members
  • 8 posts
  • OFFLINE
  •  
  • Local time:08:26 PM

Posted 05 April 2008 - 09:42 PM

Thanks a lot for your reply.
I tried to open jotti's virusscan but its opending at all. It show no page to display and
for the virustotal.com when I try to upload the file it shows following error
"0 bytes size received / Se ha recibido un archivo vacio".

#4 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 50,579 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:07:26 AM

Posted 06 April 2008 - 07:14 AM

Please download OTMoveIt2 by OldTimer and save to your Desktop.
  • Double-click on OTMoveIt2.exe to launch the program.
  • Copy the file(s)/folder(s) paths listed below - highlight everything in the quote box and press CTRL+C or right-click and choose Copy.

[kill explorer]
C:\Windows\system32\cnmvs7.dll
[start explorer]

  • Return to OTMoveIt2, right-click in the open text box labeled "Paste List of Files/Folders to be Moved" (under the yellow bar) and choose Paste.
  • Click the red MoveIt! button.
  • The list will be processed and the results will be displayed in the right-hand pane.
  • Highlight everything in the Results window (under the green bar), press CTRL+C or right-click, choose Copy, right-click again and Paste it in your next reply.
  • Click Exit when done.
  • A log of the results is automatically created and saved to C:\_OTMoveIt\MovedFiles \mmddyyyy_hhmmss.log <- the date/time the tool was run.
-- Note: If a file or folder cannot be moved immediately you may be asked to reboot your computer in order to finish the move process. If asked to reboot, choose Yes. If not, reboot anyway.

Caution: Be careful of what you copy and paste with this tool. OTMoveIt is a powerful program, designed to move highly persistent files and folders. Not following the directions as instructed or using incorrectly could lead to disastrous problems with your operating system.


.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif

#5 chitrang

chitrang
  • Topic Starter

  • Members
  • 8 posts
  • OFFLINE
  •  
  • Local time:08:26 PM

Posted 06 April 2008 - 07:20 PM

Explorer killed successfully
LoadLibrary failed for C:\Windows\system32\cnmvs7.dll
C:\Windows\system32\cnmvs7.dll NOT unregistered.
File move failed. C:\Windows\system32\cnmvs7.dll scheduled to be moved on reboot.
Explorer started successfully

OTMoveIt2 by OldTimer - Version 1.0.4.0 log created on 04072008_080656

Its gone. No more virus. Thanks a lot. Really appreciate your help.
Thank you very very much.

#6 chitrang

chitrang
  • Topic Starter

  • Members
  • 8 posts
  • OFFLINE
  •  
  • Local time:08:26 PM

Posted 06 April 2008 - 08:09 PM

Sorry, I think I was too fast to reply. When I was asked to reboot I did so. But after that I restarted once
again to double check the same virus alert came. That means the file is still been affected.

#7 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 50,579 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:07:26 AM

Posted 07 April 2008 - 08:08 AM

Another piece of malware is probably protecting the file so it cannot be permanently deleted. This issue will require further investigation and probably the use of more powerful tools than we recommend in this forum. Before that can be done you will need you to create and post a hijackthis log.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log" and complete all the steps. There are instructions for downloading and running Deckard's System Scanner (DSS) which will create a hijackthis log for you, or automatically download and install the most current version of HijackThis if it's not already installed on your computer.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif

#8 Orange Blossom

Orange Blossom

    OBleepin Investigator


  • Moderator
  • 36,699 posts
  • OFFLINE
  •  
  • Gender:Not Telling
  • Location:Bloomington, IN
  • Local time:07:26 AM

Posted 08 April 2008 - 12:03 AM

Hello chitrang,

Now that you have your log posted here: http://www.bleepingcomputer.com/forums/t/140620/virus-in-system-file-cnmvs7dll/, DO NOT make any further changes to your computer: deleting files, editing the registry, using special fix tools, installing or uninstalling software etc. as this will make it more difficult for the HJT team to help you.

Please be patient as the HJT team is very busy. DO NOT bump your log as the team may think that someone is already helping you. If you have not had a response in five days, add a response to the five days no response topic and paste in the link to your thread.

To avoid confusion, I am closing this topic. Good luck with your log.

Orange Blossom :thumbsup:
Help us help you. If HelpBot replies, you MUST follow step 1 in its reply so we know you need help.

Orange Blossom

An ounce of prevention is worth a pound of cure

SpywareBlaster, WinPatrol Plus, ESET Smart Security, Malwarebytes' Anti-Malware, NoScript Firefox ext., Norton noscript




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users