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Btcware Ransomware Support Topic (.crypton Gryphon Help.txt)


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#496 DStamm

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Posted 02 November 2017 - 09:52 AM

I found the executable, would that be of value?



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#497 Demonslay335

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Posted 02 November 2017 - 10:24 AM

Not really, I already have dozens of samples.

 

The current variant is spread via RDP and malicious emails to my knowledge.


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.


#498 DStamm

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Posted 02 November 2017 - 10:34 AM

Had to have been an email then, as we have explicitly denied external rdp, unless one of the client's computers has a RAT. As always, you guys are the best.



#499 ngolanh

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Posted 04 November 2017 - 11:59 AM

Dear All !
 

I have a new win2k8 server infected with Ransomware with payday file type.
file encrypted with file name : DMKH0107.xls.[chukabra@tuta.io]-id-1E90.payday
After the encoding is done, leave the content as below:
file name: !! RETURN FILES !!.txt
"all your files have been encrypted 
want return files?  
write on email: chukabra@tuta.io"
 
 
pls help me : sharemail.vb@gmail.com


#500 quietman7

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Posted 04 November 2017 - 07:57 PM

As I noted in your other topic....payday is based on the latest AES-256 version of the BTCWare Ransomware family which uses a different RSA-1024 key and is not decryptable unless you have the private AES key from the criminals. If possible, your best option is to restore from backups or wait for a possible solution at a later time.
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#501 sotojavi

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Posted 04 November 2017 - 08:24 PM


Hi @Demonslay, just to remember I´m one of the people hit by  .BTCWARE, no email on extension. It seems that the attacks had been mutating to other versions and complexity encryptions, and I need to know if you´re still working on my version, or you consider it´s not possible to decrypt. 
I´m not an IT expert, and wondered if there are 3rd party tools that can be used to try to decrypt, one you consider with a chance to succeded.
Thank you very much.

I am in the same boat. I did try the decrypter created by bitdefender. Actually they have a 2 step process. The first process was to identify the version. When I ran that it was identified as btcware v1 and said it found the personal ID within the ransom note. When I ran the second part that is supposed to decrypt the file I got an 'initialization failed' message. When I looked at the log file it said it could not find the personal ID. I remember that Demonslay did mention that what we have is not really btcware v1. He called it version .5. I'm still holding on to the machine that got hacked into along with all server files that were encrypted in hopes of some day recovering them...


#502 sotojavi

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Posted 04 November 2017 - 08:35 PM

I did exactly the same, found the Bitdefender tool and have the same result. I’m in touch with people from their support, they’re checking the “initialization failed” error, I think they don’t know why. I’m also still hoping to find the decrypter, it’s very strange that most of similar versions were already decrypted,

#503 burek

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Posted 07 November 2017 - 07:32 AM

ransomware payday lock :( how unlock?

https://www.sendspace.com/filegroup/Y%2BjwtqkD1qv%2BEWUamAOC2w


Edited by burek, 07 November 2017 - 07:33 AM.


#504 quietman7

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Posted 07 November 2017 - 08:03 AM

According to Demonslay335...the .payday variant is not decryptable.


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#505 kos05

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Posted 25 November 2017 - 05:37 AM

Hello!
Today and on our server, through RDP, the virus has got. He encrypted all the files, including the programs and added to them the extension "[support24@cock.li] -id-3F18.payday"
Is there currently a program capable of decrypting files?



#506 Emmanuel_ADC-Soft

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Posted 25 November 2017 - 06:15 AM

@kos05,

no program can decrypt the .payday variant for the moment but we are working on it.

Can you share some encrypted files (.doc, zip, pdf), the !#_RESTORE_FILES_#!.inf ransom note file and the trojan if you find it.

Thx, kind regards,

Emmanuel



#507 quietman7

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Posted 25 November 2017 - 08:25 AM

...Is there currently a program capable of decrypting files?

.payday is based on the latest AES-256 version of the BTCWare Ransomware family which uses a different RSA-1024 key and is not decryptable unless you have the private AES key from the criminals after paying the ransom. There is no way to bruteforce the key for this variant.

If possible, your best option is to restore from backups, try file recovery software or wait for a possible solution at a later time.
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#508 kos05

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Posted 25 November 2017 - 08:57 AM

 
I contacted extortionists. Here's what they said: "Hello. send us 2 files to 1 mb we decrypt them for free. Next, you will receive payment instructions in bitcoin. After payment, we issue a decryption program that will restore all your data. " I understand that this should not be done, but the information on the server is much more.


#509 kutlus

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Posted 25 November 2017 - 09:05 AM

Is there any solution for .nuclear decryption. black.world@tuta.io

ı dont have key i can only provide some decrypted and original files to try to do something

what can we do

#510 quietman7

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Posted 25 November 2017 - 09:26 AM

Is there any solution for .nuclear decryption. black.world@tuta.io...

Demonslay335 has advised the .nuclear (and .gryphon) variants have a serious bug that irreversibly destroys some files. If an encrypted file has nothing but 0x00 bytes at the beginning, then the file is lost forever and even the criminals cannot recover it...see Post #449.
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