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Files encrypted after Ukash virus


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3 replies to this topic

#1 RichieP

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Posted 18 January 2013 - 11:41 AM

Hi there

Sorry if I'm posting in the wrong place but this is the result of an infection.

My friend got the Metropolitan Police warning with the option to pay using Ukash to release the block on the computer. I tried the usual restart in Safe Mode but this was also disabled and it kept restarting as soon as it started to load in Safe Mode.

I eventually booted from a Hirens CD and deleted the suspect files from the Application Data folder after seeing some information on the web. I then ran Malwarebytes and it found and removed some trojans and everything now works fine.

However, when he tries to open any files such as spreadsheets, jpegs etc, he gets an error message "The file you are trying to open is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"

If I click Yes the spreadsheet or whatever contains loads of random text and is unreadable.

I've tried using TE94decrypt with various switches, Rannoh Decryptor and Xorist Decryptor but none of them can open the files.

Anyone got any suggestions?

Thanks
Richie

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#2 boopme

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Posted 19 January 2013 - 09:56 AM

I think we should get a deeper look. Please follow this Preparation Guide and post in a new topic.

Let me know if all went well.
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#3 derwentdale

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Posted 21 January 2013 - 06:48 AM

In my case the virus didn't block access to the machine, rather it encoded pretty well every file in my documents folder. I gather from Kaspersky.com that the encryption is difficult to crack. But there is a simple work-around in Windows 7 using the Restore option. Modified files get restored with each system restore, usually daily.

All of my files had been "Modified 17/01/2012", presumably the date when the virus struck. The solution is simple & painless. Right-click an appropriate directory e.g. 'My Documents', select 'Restore previous versions', choose the first restore point prior to encryption and get a cup of coffee while Windows 7 does the business. It is important NOT to restore a Library directory, as these have no sub-directories, but it will do no harm.

It is a good idea to also restore your OS from the Control Panel, prior to restoring your documents, just in case the virus is lurking around. It may be necessary to do this in Safe Mode if you can't boot normally. I gather that XP doesn't have the file/folder restore function, so tough, you need a back-up or you are stuck with trying to decrypt. Either way DO NOT PAY UP!

#4 boopme

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Posted 21 January 2013 - 11:31 AM

Now that your log is properly posted, you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a Malware Removal Team member, nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show it the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the Malware Removal Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the Malware Removal 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 make another reply until it has been responded to by a member of the Malware Removal 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 MRL Team member is already assisting you and not open the thread to respond.

The current wait time is 1 - 2 days and ALL logs are answered.

If HelpBot replies to your topic, PLEASE follow Step One so it will report your topic to the team members.

To avoid confusion, I am closing this topic.
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