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Encrypted Files - How do I know what virus I have?


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#1 IanEncrypted

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Posted 25 February 2015 - 07:11 PM

I have my data files encrypted on a laptop by a virus and would like to know how to determine what virus I am dealing with.  Where do I start?

 



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#2 IanEncrypted

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Posted 25 February 2015 - 07:17 PM

The encrypted files are in directories, that all seem to have files "HELP_DECRYPT.*"  These files are using Google Chrome icons too.  There are ransom demands to be paid in bitcoins



#3 Aura

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Posted 25 February 2015 - 07:55 PM

Hi Ian :)

Are you able to copy and paste the content of "HELP_DECRYPT" in here so we can take a look at it? Once we know which Cryptoware you are infected with, we'll be able to redirect you in the proper support thread.

Edited by Aura., 25 February 2015 - 07:55 PM.

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#4 quietman7

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Posted 25 February 2015 - 08:15 PM


CryptoWall 3.0 leaves files named:
HELP_DECRYPT.TXT
HELP_DECRYPT.HTML
HELP_DECRYPT.URL
HELP_DECRYPT.PNG

A repository of all current knowledge regarding CryptoWall, CryptoWall 2.0 & CryptoWall 3.0 is provided by Grinler (aka Lawrence Abrams), in this tutorial: CryptoWall and DECRYPT_INSTRUCTION Ransomware Information Guide and FAQ

Reading that Guide will help you understand what CryptoWall & CryptoWall 2.0 does and provide information for how to deal with it and possibly decrypt/recover your files. Cryptowall typically deletes all Shadow Volume Copies with vssadmin.exe so that you cannot restore your files via System Restore or using a program like Shadow Explorer...but it never hurts to try. At this time there is no fix tool and no way to retrieve the private key that can be used to decrypt your files without paying the ransom.

There is also a lengthy ongoing discussion in this topic: CryptoWall - new variant of CryptoDefense Support & Discussion Topic.

Rather than have everyone start individual topics, it would be best (and more manageable for staff) if you posted any questions, comments or requests for assistance in that topic discussion.

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