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.arena Ransomware,file ending .arena | mikecoins@qq.com, dd@airmail.cc

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#1 merlin077


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Posted 06 November 2017 - 02:18 PM

Hey guys,


a client got infected with ransomware. I have isolated the file itself (or the file which downloads the actual ransomware, not too sure).


The encrypted files are named after the following scheme: delz1.exe.id-6889E5E1.[mikecoins@qq.com].arena

The ransomware dropped a file on the desktop named FILES ENCRYPTED.txt  with the following text:


all your data has been locked us
You want to return?
write email mikecoins@qq.com or dd@airmail.cc


I actually wrote to both email addresses, but no response so far...

The software had disabled shadow copys and left no further information (i.e. a desktop wallpaper or .htm file with instructions). It encrypted pretty much all data except for some .mdf and .ldf MSSQL database files (thank god!)


Is there any way to get the data back?


I uploaded the virus itself (filename _psi.exe) to virustotal with the following result: https://www.virustotal.com/de/file/539d663a0715894ae70812e095fbd5a5529efb0b5017a3ef18e5e64bc61c524e/analysis/


I tried some decrypter so far, but no luck :( Is there any way to get the data back?


Here is a upload of a some encrypted files: https://wetransfer.com/downloads/352622b7d98d4c8ed31c5b3a03d1b38620171106191532/d28caedcd434ab08bb3dcd9e2d05ac1920171106191532/9cc7bc


Here is the original virus: https://we.tl/sCFgY6YIzT



Thank you so far and kind regards,









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#2 quietman7


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Posted 06 November 2017 - 09:04 PM

Any files that are encrypted with Dharma (CrySiS) Ransomware will have an id-<8 random hexadecimal characters>.[email address] followed by an .dharma, .wallet, .zzzzz, .onion, .cesar (.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].cesar, id-BCBEF350.[chivas@aolonline.top].arena) and leave files (ransom notes) with names like 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 .cesar (.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.

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.

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