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Help! Nemucod .crypted


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#1 SteveInNL

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Posted 01 December 2016 - 04:43 PM

Thanks for reading...

 

So I have a small network with a server and some clients.  All clients share a mapped drive on the server which now has a bunch of .crypted files on it ( mostly excel and pdf's.)  I've tried the decrypt_nemucod.exe but get the same result everytime and yes, i believe i have followed the instructions properly with drag and drop a before and after file onto the executable:

 

I've also found a png in some of the affected directories which I'm unable to post:

----

What Happened to your files?

All of your files were protected by a strong encryption with RSA-2048 using CryptoWall 3.0

More info....

....

 

I believe i found and cleaned the affected client computer but would LOVE some help to restore some of the encrypted files.  I have a backup from last week but that will mean losing 3 or 4 days work so that's my last option.  Any help or pointers would be appreciated.  also, I've run adwcleaner and Spyhunter, MS Secutiry Essentials and MS SafetyScanner and a few others so I "believe" all my client pc's are cleaned...thanks for any help!

 



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#2 SteveInNL

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Posted 01 December 2016 - 04:46 PM

I also had a popup a.txt file on the infected pc which went something like this:

 

ATTENTION!

 

All your personal files (documents, databases, photos, music, etc)

have been encrypted with a strong RSA-2048 algorithm.

 

You need to pay 0.43021215 Bitcoins to restore your files.

 

1.  Create Bitcoin wallet:

     "dont click this  "htps://blockchain.info.wallet/new"

 

...etc


Edited by SteveInNL, 01 December 2016 - 04:47 PM.


#3 quietman7

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Posted 01 December 2016 - 04:57 PM

Any files that are encrypted with Nemucod Ransomware will have the .crypted extension appended to the end of the encrypted data filename and leave files (ransom notes) named DECRYPT.TXT.

The .png note you site looks like one seen with CryptoWall...it could be a leftover from a previous infection. You can submit samples of encrypted files and ransom notes to ID Ransomware for assistance with identification and confirmation. This is a service that helps identify what ransomware may have encrypted your files and then attempts to direct you to an appropriate support topic where you can seek further assistance. Uploading both encrypted files and ransom notes together provides a more positive match and helps to avoid false detections.

Fabian Wosar released a generic decryptor solution for this type of infection.
  • Decryptor Released for the Nemucod Trojan's .CRYPTED Ransomware

    In order to find your decryption key, you need to drag an encrypted file and unencrypted version of the same file onto the decrypt_nemucod.exe icon at the same time. To do this, you would select both the encrypted and unencrypted version of a file and then drag them both onto the decryptor.

  • Emsisoft Decrypter for Nemucod

    To use the decrypter you will require an encrypted file of at least 144 bytes in size as well as its unencrypted version. To start the decrypter select both the encrypted and unencrypted file and drag and drop them onto the decrypter executable.

drag-files.gif

Trend Micro also has released a Ransomware File Decryptor for victims of Nemucod infections.

There is an ongoing discussion in this topic where you can post comments, ask questions and seek further assistance. Other victims have been directed there to share information, experiences and suggestions.Rather than have everyone with individual topics, it would be best (and more manageable for staff) if you posted any more questions, comments or requests for assistance in the above support topic discussion...it includes experiences by experts, a variety of IT consultants, end users and company reps who have been affected by ransomware infections. To avoid unnecessary confusion, this topic is closed.

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