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Maybe Encrypted Files

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#1 9overflow


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Posted 23 January 2015 - 06:26 PM

Hello to everyone, i'd like show you a file, i thank it's encrypted..
One of my customer has found many pdf files (and doc too) renamed with another format (.diyucog), there were no viruses in his computer and do not know what this extension...
unfortunately all files are small..

i have uploaded one of these files, can you help me to know if are encrypted or what?




Thank you and have a nice day

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#2 quietman7


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Posted 23 January 2015 - 10:30 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. A repository of all current knowledge regarding CTB Locker and Critroni Ransomware is provided in this tutorial: CTB Locker and Critroni Ransomware Information Guide and FAQ

More information in these articles:Compounding matters, the newer CTB-Locker infection has been seen in combination with KEYHolder or Torrent Locker 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.

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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