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Identify ransomware without ransom note, only with encrypted file


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#1 Arazch

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Posted 21 September 2017 - 07:11 AM

Hi,
 
is it possible identify ransomware without ransom note, only with encrypted file? 
 
ID-Ransomware is reporting... "Unable to determine ransomware"
 
A year ago ransomware attacked computer of my colleague and encrypted all word, excell and pdf files (names and extensions remaining unchanged). Before we could identify it, antivirus deleted all ransom notes. She had only remember that something like this window popped up:
 
 
In every folder with encrypted data left this dummy file... 
 
4252016XYLITOL.KEY666
 
We hope that on www.nomoreransom.org could be decryptor but we need to indetify ransomware.
 
We will appreciate any hlep
 
Thanks
 
Marek, from Slovakia
 


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#2 Demonslay335

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Posted 21 September 2017 - 12:45 PM

You would have been able to recover a ransom note from quarantine if an antivirus removed them.

 

ID Ransomware would have identified it if it is a ransomware that uses a filemarker. It must not be one if it went un-identified, so it will be difficult without a ransom note or the executable.


logo-25.pngID Ransomware - Identify What Ransomware Encrypted Your Files [Support Topic]

ransomnotecleaner-25.png RansomNoteCleaner - Remove Ransom Notes Left Behind [Support Topic]

cryptosearch-25.pngCryptoSearch - Find Files Encrypted by Ransomware [Support Topic]

If I have helped you and you wish to support my ransomware fighting, you may support me here.


#3 Arazch

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Posted 21 September 2017 - 01:02 PM

Thanks... unfortunately, no ransom note in quarantine, all was deleted.

 

So there is no other way to identify? 



#4 quietman7

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Posted 21 September 2017 - 02:39 PM

If you can find the malicious executable that you suspect was involved in causing the infection, it can be submitted here with a link to this topic. There is a "Link to topic where this file was requested" box under the Browse button...it's best to compress large files before sharing. Doing that will be helpful with analyzing and investigating by our crypto malware experts.
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#5 Arazch

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Posted 21 September 2017 - 02:57 PM

Problem is it was a year ago and I was not there when it happened. Infected computer was cleaned, so all we have are encrypted files (word, excel, pdf), that bizzare "...KEY666" file and tears in eyes of my colleague, because these files were very important for her and nobody here in Slovakia could help. 
 
What about randomly using some of decryptors from www.nomoreransom.org and trying decrypt some files? I know, it is desperate attempt... but better than nothing.





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