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

Ramnit Questions


  • Please log in to reply
3 replies to this topic

#1 cehjan56

cehjan56

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:04:16 AM

Posted 15 November 2011 - 01:42 PM

Hi Everybody.

Firstly imagine someone with the least possible computer skills you can think of.

Now divide by 100.

At least you know where I'm starting from.

I too have been hit with win32/ramnit.ae

My computer has micrsoft essentials, which detects the virus, but seems unable to clear it.

Can anyone tell me, in words of one syllable, what I should do?

The only files on the computer that I would not wish to lose are pictures, and possibly a few word documents.

Many thanks

Charles

Edited by hamluis, 15 November 2011 - 03:45 PM.
Split from different topic, PM sent new OP.


BC AdBot (Login to Remove)

 


#2 hamluis

hamluis

    Moderator


  • Moderator
  • 56,558 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Killeen, TX
  • Local time:10:16 PM

Posted 15 November 2011 - 02:24 PM

As you can see...this is not a malware forum and the comments made to the initial OP...are the same commnents I would make anew to you.

The one thing that I would amend...is to suggest that you actually initiate a post in the appropriate malware forum...and ask your questions about your malware experience...and confirm that you truly are infected...before doing anything.

Toward that end, I will move this to the BC Am I Infected forum.

Louis

#3 cehjan56

cehjan56
  • Topic Starter

  • Members
  • 2 posts
  • OFFLINE
  •  
  • Local time:04:16 AM

Posted 15 November 2011 - 09:55 PM

Louis,

No problems re moving the question - 'though when I got an email telling me there was a response, and then I clicked the link, neither my original post nor a response was present I thought that my personal computer jinx had struck again.

So to describe my problem from new.

Dell desktop computer running XP home. Virus protection microsoft essentials.

1. Working away, text box appears in bottom RH corner - computer under attack - 2 then 4 then rapidly increasing number of infected files.

2. Stop what I'm doing and click the clean computer options. Problem is win32/ramnit.ae

I forget the details, but as fast as my machine is trying to clear the problem more 'hits' seem to be occurring.

3. Stop what I am doing, run full scan, 200 odd infected files (all win32/ramnit.ae). Hit 'clean'. Re-start computer. No1 above starts happening straight away.

4. Go through the loop again with the same results.

5. Try to restart in safe mode (this is new territory for me!) eventually find an option 'start in last known good configuration' No 1 above starts happening straight away.

6. Give up and have a beer.

I think my only options are to get my resident 24 year old son to have a look (I have tried this option but without success); or to pay someone. The latter option looks to be less hassle!

Thanks for any assistance.

Charles.

#4 boopme

boopme

    To Insanity and Beyond


  • Global Moderator
  • 73,566 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:NJ USA
  • Local time:11:16 PM

Posted 15 November 2011 - 11:30 PM

As stated in that topic this is incurable. Eventually it will infect ALL exe files.

I'll repost if you missed it and some reinstall help.

I'm afraid I have very bad news.

Win32/Ramnit (and related variants) is a dangerous file infector with IRCBot functionality which infects .exe, and .HTML/HTM files, and opens a back door that compromises your computer. Using this backdoor, a remote attacker can access and instruct the infected computer to download and execute more malicious files. The infected .HTML or .HTM files may be detected as The infected .HTML or .HTM files may be detected as Virus:VBS/Ramnit.A or VBS/Generic. Win32/Ramnit.A!dll is a related file infector often seen with this infection. It too has IRCBot functionality which infects .exe, .dll and .HTML/HTM files and opens a back door that compromises your computer. This component is injected into the default web browser by Worm:Win32/Ramnit.A which is dropped by a Ramnit infected executable file.

-- Note: As with most malware infections, the threat name may be different depending on the anti-virus or anti-malware program which detected it. Each security vendor uses their own naming conventions to identify various types of malware.With this particular infection the safest solution and only sure way to remove it effectively is to reformat and reinstall the OS.

Why? The malware injects code in legitimate files similar to the Virut virus and in many cases the infected files (which could number in the thousands) cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files often become corrupted and the system may become unstable or irreparable. The longer Ramnit.A remains on a computer, the more files it infects and corrupts so the degree of damage can vary.

Ramnit is commonly spread via a flash drive (usb, pen, thumb, jump) infection where it copies Worm:Win32/Ramnit.A with a random file name. The infection is often contracted 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.

In my opinion, Ramnit is not effectively disinfectable, so 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. Security vendors that claim to be able to remove file infectors cannot guarantee that all traces of it will be removed as they may not find all the remnants. If something goes awry during the malware removal process there is always a risk the computer may become unstable or unbootable and you could loose access to all your data.

Further, your machine has likely been compromised by the backdoor Trojan and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume the computer is secure even if your anti-virus reports that the malware appears to have been removed.

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. Please read:

Whenever a system has been compromised by a backdoor payload, it is impossible to know if or how much the backdoor has been used to affect your system...There are only a few ways to return a compromised system to a confident security configuration. These include:
• Reimaging the system
• Restoring the entire system using a full system backup from before the backdoor infection
• Reformatting and reinstalling the system

Backdoors and What They Mean to You

This is what security expert miekiemoes has to say: Virut and other File infectors - Throwing in the Towel?

If I guide someone with Virut (or any other File Infector) present and their Antivirus cannot properly disinfect it, then I recommend a format and reinstall...dealing with such infections is a waste of time and that's why I prefer the fastest and safest solution - which is a format and reinstall...After all, I think it would be irresponsible to let the malware "stew" (download/spread/run more malware) for another couple of days/weeks if you already know it's a lost case.


This is what Jesper M. Johansson at Microsoft TechNet has to say: Help: I Got Hacked. Now What Do I Do?.

The only way to clean a compromised system is to flatten and rebuild. That’s right. If you have a system that has been completely compromised, the only thing you can do is to flatten the system (reformat the system disk) and rebuild it from scratch (reinstall Windows and your applications).



From our quietman7
Caution: If you are considering backing up data and reformatting, keep in mind, with a Virut infection, there is always a chance of backed up data reinfecting your system. If the data is that important to you, then you can try to salvage some of it but there is no guarantee so be forewarned that you may have to start over again afterwards if reinfected by attempting to recover your data. Only back up your important documents, personal data files, photos to a CD or DVD drive, not a flash drive or external hard drive as they may become compromised in the process. The safest practice is not to backup any executable files (*.exe), screensavers (*.scr), autorun (.ini) or script files (.php, .asp, .htm, .html, .xml ) files because they may be infected by malware. Avoid backing up compressed files (.zip, .cab, .rar) that have executables inside them as some types of malware can penetrate compressed files and infect the .exe files within them. Other types of malware may even disguise itself by hiding a file extension or adding to the existing extension as shown here (click Figure 1 to enlarge) so be sure you look closely at the full file name. If you cannot see the file extension, you may need to reconfigure Windows to show file name extensions. Then make sure you scan the backed up data with your anti-virus prior to to copying it back to your hard drive.

If your CD/DVD drive is unusable, another word of caution if you are considering backing up to an external usb hard drive as your only alternative. External drives are more susceptible to infection and can become compromised in the process of backing up data. I'm not saying you should not try using such devices but I want to make you aware of all your options and associated risks so you can make an informed decision if its worth that risk.Again, do not back up any files with the following file extensions: exe, .scr, .ini, .htm, .html, .php, .asp, .xml, .zip, .rar, .cab as they may be infected.

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 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. See 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..

If you need additional assistance with reformatting or partitioning, you can start a new topic in the Operating Systems Subforums forum.
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




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users