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No key for new variant ransomware


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@Silent Unfortunately, we no longer have any method to decrypt STOP(DJVU) unless the encryption occurred some time ago, before the 29th of August 2019.

 

Please refer to this forum post for more information: https://support.emsisoft.com/topic/32045-about-the-stopdjvu-decrypter/

 

To summarize, an online ID is impossible to decrypt with current technology. An offline ID is decryptable if a victim with the same ID pays for the encryption key and reports it to us, so we can add it to our decrypter.

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Hello @Silent

If you have correctly determined that the online ID, then the files cannot be decrypted using the decryptor that was created for the offline ID.
But you can use an alternative method of recovering (not decrypting!) files. 

First you should know that...

This 'STOP Ransomware' enters the PC due to the fact that computer is poorly protected. People often use free antivirus programs with the 'Free' label in the name. None of these programs will protect PC from programs similar to 'STOP Ransomware', because basic protection is not capable of this feat.
If users used comprehensive protection of the 'Internet Security' class, then it would help protect PC from ransomware attacks.
There is no 100% protection against malware, but what the 'Free' antivirus gives is 1-2 percent protection. 

After this attack, PCs could have stayed other malware elements. This maybe is an info-stealer and something else. Therefore, it is urgent to conduct a full check and destroy malware.
Use an antivirus such as Emsisoft Anti-Malware to effectively remove the malware. 
You can get a free trial 30-days version of Emsisoft Anti-Malware here: https://www.emsisoft.com/en/home/antimalware/

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Only after neutralizing all malicious files ...

I recommend this following method only when there is no other way. You decide what action to take.

1) If you have encrypted archives, you can partially recover them. Only 1-2 files are damaged there. Remove the extension that the ransomware added to the archives, and extract the files in the usual way. Everything except 1-2 files will be fixed. If there is only 1 file in the archive, then it will most likely be unrecoverable.

2) There is an alternative (additional) way to recover some media files:
WAV, MP3, MP4, M4V, MOV, 3GP.

https://www.disktuna.com/media_repair-file-repair-for-stop-djvu-mp3-mp4-3gp

But before trying the alternative variant with media files, it is recommended that you make a copy of the encrypted files. Something will be restored better, something will be restored worse. 

An alternative method for other files has not yet been found.

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