Solved

Cryptovirus file retrieval

Posted on 2013-11-07
2
527 Views
Last Modified: 2013-11-07
Hi guys,

I've just received a client's PC after they had a cryptovirus removed by another IT service company.

I don't know the name of the cryptovirus, but I'm sure I can find out.

The files are all encrypted but all remain in their original location.

Do you have suggestions of how to troubleshoot this without having to pay the 'ransomer', on the off chance that they may release the encryption codes (I wouldn't like to test this)?

Someone suggest data recover through a data recovery agent, but that doesn't sound right - that data's there and the file sizes look about right, they're just encrypted.

Look forward to hearing your thoughts on a way forward.
0
Comment
Question by:Servant-Leggie
2 Comments
 
LVL 15

Accepted Solution

by:
Skyler Kincaid earned 500 total points
ID: 39632631
We have had a few computers come in like this and your only option is restoring from backups. The virus uses 2048bit encryption with a unique key that is generated from some punks server.

Paying the ransomer may allow you to restore the files but typically even that option is limited by a deadline.

We have all our clients setup with SOS backup. We have been formatting the machines, restoring the files, installing the Cryptoblocker tool, installing a better antivirus and sending it back out. Here is the link to the prevention tool but we haven't done any testing with it:

http://www.foolishit.com/vb6-projects/cryptoprevent/
0
 

Author Comment

by:Servant-Leggie
ID: 39632703
Thanks, xKincaidx, your solution was pretty much what I was thinking, only I didn't know it was 2048bit encryption (although I did know that it was apparently 'uncrackable' and is apparently the use of impressive and legitimate encryption algorithms for illegitimate purposes).
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I'm a big fan of Windows' offline folder caching and have used it on my laptops for over a decade.  One thing I don't like about it, however, is how difficult Microsoft has made it for the cache to be moved out of the Windows folder.  Here's how to …
OfficeMate Freezes on login or does not load after login credentials are input.
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…
The viewer will learn how to successfully download and install the SARDU utility on Windows 8, without downloading adware.

680 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question