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.


Unknown File Extension

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

#1 dvdrttr


  • Members
  • 3 posts
  • Local time:05:48 AM

Posted 23 July 2015 - 09:54 AM

Since I can't find anything anywhere on this, hopefully I'm in the correct topic (I'm starting the assumption that this was caused with a virus).
A friend contacted me and said 'all' his files now have the extension .iklbunn.  For instance, he gave the this as an example:  Sallycopy.xls.iklbunn.  When he said 'all,' I wasn't certain if he meant just documents and spread sheets or literally all files (my guess it's just documents and spreadsheets).
I checked all the major search engines and any antivirus software manufacturer I could think of (among them, Norton, McAfee, Kaspersky, BitDefender, etc) and drew a blank with every search.
I'd appreciate some input.  Thanks.

Mod Edit: Moved to General Security ...File Locker ~~boopme

Edited by hamluis, 23 July 2015 - 01:25 PM.
Closed per request - Hamluis.

BC AdBot (Login to Remove)


#2 Sintharius


    Bleepin' Sniper

  • Members
  • 5,639 posts
  • Gender:Female
  • Location:The Netherlands
  • Local time:10:48 AM

Posted 23 July 2015 - 12:34 PM

Hi there,

It looks like your friend is infected with CTB-Locker crypto ransomware. Please see below for more information.

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 KEYHolderTorrentLocker (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.

To avoid confusion I have asked a Moderator to close this topic.

Good luck.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users