.arena ransomware

Files on Servers have been renamed with the extension .arena. I can rename the files with Bulk rename utility, however the file remains unreadable. The applications will try to open the file (excel, pdf, paint, etc.) but it says it is corrupt. I have tried Trend Micro, Avast and Rakhn Decryption apps. Any help is greatly appreciated. This has occurred on various OS in our network. We have taken down the originally effected server.

Any files that are encrypted with Dharma Ransomware (CrySiS) will have an id-<8 random hexadecimal characters>.[email address] followed by an .dharma, .wallet, .zzzzz, .onion, .cezar or .arena extension appended to the end of the encrypted data filename (i.e. .id-A04EBFC2.[bitcoin143@india.com].dharma, .id-480EB957.[legionfromheaven@india.com].wallet, .id-5FF23AFB.[Asmodeum_daemonium@aol.com].onion, .id-EB214036.[amagnus@india.com].zzzzz, .id-01234567.[gladius_rectus@aol.com].cezar, id-BCBEF350.[chivas@aolonline.top].arena) and leave files (ransom notes) named README.txt, README.jpg, Hello my vichtim.txt, Your personal data are encrypted!.txt, FILES ENCRYPTED.txt, info.hta.

Unfortunately, there is no known way to decrypt files encrypted by .zzzzz or the newer .cezar and .arena variants of Dharma without paying the ransom. If possible, your best option is to restore from backups or wait for a possible solution at a later time.

There is an ongoing discussion in this topic where victims can post comments, ask questions and seek further assistance. Other victims have been directed there to share information, experiences and suggestions.

• Dharma ransomware (filename.[<email>].dharma/.wallet/.zzzzz) Support Topic

Rather than have everyone with individual topics, it would be best (and more manageable for staff) if you posted any more questions, comments or requests for assistance in the above support topic discussion...it includes experiences by experts, a variety of IT consultants, end users and company reps who have been affected by ransomware infections. To avoid unnecessary confusion, this topic is closed.

Thanks
The BC Staff