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

Cryptowall 2.0 Decryption


  • This topic is locked This topic is locked
1 reply to this topic

#1 GSequoia

GSequoia

  • Members
  • 12 posts
  • OFFLINE
  •  
  • Local time:12:06 AM

Posted 21 October 2014 - 12:17 PM

I got caught with my pants down with a broken DFS/Backup policy and had to pay those bastards their ransom.  I received their decrypt utility along with the private and public key files.  The decryption works on some files but is causing corruption in JPEG files (or any file that uses JPEG internally; i.e. PDF, MPEG, Word documents) and larger XLS files.

 

I would like to try to decrypt them through alternate means since I have the key.  Using openssl rsautl -decrypt does not work because the files are large.

 

Any ideas?  We have a few crucial files that I'd love to be able to recovery.

 

Thanks



BC AdBot (Login to Remove)

 


#2 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,287 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:03:06 AM

Posted 21 October 2014 - 05:20 PM


A repository of all current knowledge regarding CryptoWall & CryptoWall 2.0 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 does and provide information for how to deal with it and possibly decrypt/recover your files. At this time there is no fix tool for CryptoWall.

CryptoWall 2.0 uses its own TOR gateways...see Updated CryptoWall 2.0 ransomware released that makes it harder to recover files.

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

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.

Thanks
The BC Staff
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users