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Unknown File Extension


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#1 dvdrttr

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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.


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#2 Sintharius

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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.




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