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NEMISIS ransomware - probably aka CRY36


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3 replies to this topic

#1 Deltark7

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Posted 23 June 2017 - 09:14 AM

Hi guys, I'm helping a victim of a ransomware attack.
All his data has been encrypted. Access was gained through an open 3389/RDP port.
Password has been found by brute force.
Everything, including backups, have been encrypted.
The extention of the files is::     FILENAME.id-1234567890_[mk.stryker@aol.com].i05fp   ID has been replaced by 1234567890 for privacy reasons.

Encrypted files are 36 bits larger then the original ones!

I tried to upload the ransom note here, but was unsuccessfull.
 

Cracking the key of this 'bastard' would be great, but first of all, I like to know if this ransomware is already known to other people.
Together we might achieve more, also tracking the bastards down. Because they leave interesting trails!!

 

If you're a victim or want to help, pls reply to this post.
 



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#2 LeandroMachado

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Posted 23 June 2017 - 09:16 AM

A client got a variant, same stuff, final extensio .130ay

 

 

Good luck there


Edited by LeandroMachado, 23 June 2017 - 09:21 AM.


#3 Deltark7

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Posted 23 June 2017 - 02:31 PM

If you've got access to the infected PC, can you do the following:

Pls check in the windows log files, the logs for the originating IP addresses used for the RDP-connection.
In the logs: Computer Management /  Logs Applications & Services / Microsoft / Windows/ TerminalServices-RemoteConnectionManager / Operational   
Here you'll find all connecting IP's.

 

File location for export: %SystemRoot%\System32\Winevt\Logs\Microsoft-Windows-TerminalServices-RemoteConnectionManager%4Operational.evtx     

Can you could send me the file for further analysis?
Pls indicate also which IP's you know are legitimate ones.

 

Secondly, did you start the chat with the hackers?

What was the ransom amount requested?

 

Thank you for your support.



#4 quietman7

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Posted 23 June 2017 - 02:43 PM


Any files that are encrypted with Cry9, Cry36, the newest variants of CryptON (Nemesis) will have a random 5 character hexadecimal extension appended to the end of the encrypted data filename (i.e. .id-1163283255_[liukang@mortalkombat.su].08c85, .id-1163283255_[mk.baraka@aol.com].830s7) and leave files (ransom notes) named ### DECRYPT MY FILES ###.txt.

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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