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files encrypted and renamed

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#1 stevevdb


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Posted 22 November 2015 - 07:43 AM


I have a small problem: on november 19 a lot of files became encrypted and renamed with the following text: id123456789_emaIl1_key@asteroidmail.com_email2_key@moonlinet.com


The filename stays the same but the last section referring to the e-mail addresses is added and the type of file is changed to exe format.


So far unable to find the pc which is causing the problem, I used 4 AV's so far: Mcafee, Symatec, Kaspersky and Antimalwarebytes. 

At this very moment I was only able to find something about this on a german and danish website but no solution.


Does anyone have a clue what this is?


The files are encrypted and changed to an EXE.


What I did:

Scan the registry for any changes on a certain date: nothing;

Scanning the files which computer/user changed a large amount of data on the network drive: nothing;

Checking all the pcs: nothing to be found, it appears this one only has a go on network drives;

November 20: no files were encrypted that day, I scanned the entire network share for changes that day 3 times!


So I am at the end of my search, help...


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#2 quietman7


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Posted 22 November 2015 - 10:09 AM

Your issue appears to be related to these discussion topics:It is believed that this infection is part of a ransomware kit that different affiliates utilize with their own payment email addresses which explains all the "@" ransomwares which have been reported.

Kaspersky Lab has a utility called RakhniDecryptor that is able to brute force the decryption key for some types of these <filename>.<original_extension>.<"@" variants.

For instructions for using RakhniDecryptor, please refer to this BC news article...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 one of the above support topic discussions. Doing that will also ensure you receive proper assistance from our crypto malware experts since they may not see this thread. To avoid unnecessary confusion...this topic is closed.

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