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Weird file type extension on files due to virus .TATSYFC


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#1 Shazamy

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Posted 10 February 2015 - 11:38 AM

Hi Everyone, I was working on my friends laptop that had a virus. I'm not sure what it was but we ended up backing up the info in the user folder (Pictures, Docs, etc...) and reinstalling Windows 7.

The computer is working fine but, seemingly, all the files I back up now have an added ".tatsyfc" at the end of them, making the computer thing that ",tatsyfc" is a file type. Even after deleting the ,tatsyfc and typing the correct file type (PDF, DOCX, JPEG, etc..) the files won't work, citing corruption. 

I've removed many viruses before but haven't encountered this yet.

 

Any information that could help me resolve this would be greatly appreciated, thanks in advance :D



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#2 quietman7

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Posted 10 February 2015 - 04:08 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.

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