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.


decrypt CTB locker encrypted files

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

#1 macsek666


  • Members
  • 5 posts
  • Local time:05:21 PM

Posted 02 February 2015 - 10:30 AM

I was infected with the CTB locker. My IT cleaned my computer from it but my files on the computer are still encripted, or at least it looks like that.

I opened the http://w7yue5dc5amppggs.onion/ page with Tor Browser as I was instructed in the message received with the CTB locker and here got the option to decrypt 1 encryted file before I pay 2,5 Bitcoins to convince me that decrypt is working. So I have uploaded 1 file with the extension "ingoauj' (all my infected files have this extension) but I received the message that this file is not encryted. 


Is this possible? It says that is not encrypted but I cannot open it.


Could someone help me?


BC AdBot (Login to Remove)


#2 quietman7


    Bleepin' Janitor

  • Global Moderator
  • 52,059 posts
  • Gender:Male
  • Location:Virginia, USA
  • Local time:11:21 AM

Posted 02 February 2015 - 03:50 PM

The newest variants of CTB Locker typically encrypt all data files and rename them as a file with a 6-7 length extension with random characters. The newer variants also do not always leave a ransom note if the malware fails to change the background, like it generally does. Compounding matters, the newer CTB-Locker infection has been seen in combination with KEYHolder, Torrent Locker (fake Cryptolocker) or Cryptowall ransomware. Unfortunately, there is still no known method of decrypting your files without paying the ransom and with dual infections, that means paying both ransoms.

A repository of all current knowledge regarding this infection is provided by Grinler (aka Lawrence Abrams), in this tutorial: CTB Locker and Critroni Ransomware Information Guide and FAQ

There is also an ongoing discussion in this topic: CTB Locker or DecryptAllFiles.txt Encrypting Ransomware Support & Discussion. 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.

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