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Remove CryptoBlock Ransomware and Restore Your Files

Attention! This article will help you remove CryptoBlock ransomware in full. Follow the ransomware removal instructions given at the end of the article.

New ransomware that is still in development has appeared on the Internet with multiple samples. The name of this virus is CryptoBlock – so it says in its ransom note. A few malware researchers discovered samples of its active payload file. The ransom message appears after your files are dealt with and deemed inaccessible, but for now they will not get encrypted.

Threat Summary

NameCryptoBlock
TypeRansomware
Short DescriptionThe ransomware is still in development, but it seems that it would get finished soon. It has a list with which processes to stop and which files to encrypt.
SymptomsThe ransomware will encrypt your data. Then it will display a ransom note with instructions for payment.
Distribution MethodPayload file that can be spread via e-mails and sites
Detection Tool See If Your System Has Been Affected by CryptoBlock

Download

Malware Removal Tool

User ExperienceJoin Our Forum to Discuss CryptoBlock.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

CryptoBlock Ransomware – Infection Spread

In the future, CryptoBlock ransomware might spread its infection in many ways. The most popular of these ways and go-to-choice would probably be with the help of a payload file. If you download such a file and execute it, a malicious script will be triggered and infect your computer. You can see the analysis of an executable file containing a sample of the payload on the VirusTotal website down here:

CryptoBlock ransomware might spread its payload file around social media networks and services for file sharing. The malicious payload script inside could be spread with different files. Lots of freeware and bundled programs could be presented as useful but actually be used to hide the entry point of the ransomware in the near future. Refrain from opening files from suspicious sources such as emails or links, especially after you download them. Beforehand, you should do a scan with a security tool and check the files’ size and signatures for anything that seems out of place. Read the preventing ransomware tips in the forum topic with a similar name.

CryptoBlock Ransomware – Technical Information

The CryptoBlock ransomware is also a cryptovirus, but currently an inactive one. Your files will not get encrypted as the encryption does not work fully. Different malware researchers have discovered more than five samples of it in the wild. One of them even noted that the virus has a .wav with recorded text to be played, similar to that of Cerber ransomware.

CryptoBlock ransomware could create entries in the Windows Registry to achieve persistence. Such registry entries are designed to make a virus start automatically with each boot of the Windows Operating System.

After your files are encrypted, the ransomware is made to drop a ransom note. That note contains the demands of the cybercriminals for unlocking your files.

You can see the contents of the ransom note down here:

The main text of the ransom note reads the following:

CryptoBlock
Your personal files are encrypted!
Your personal files encryption produced on this computer: photos, videos, documents, etc. Encryption was produced using a unique public key RSA-2048 generated for this computer.
To decrypt files you need to obtain the private key.
The single copy of the private key, which will allow to decrypt the files, located on a secret server on the Internet; the server will destroy the key after a time specified in this window. After that, nobody and never will be able to restore files…
To obtain the private key for this computer, which will automatically decrypt files, you need to pay 0.3 bitcoin (~210 USD).
You can easily delete this software, but know that without it, you will never be able to get your original files back.
Disable your antivirus to prevent the removal of this software.
For more information on how to buy and send bitcoins, click “How to pay”
Do not delete this list, it will be used for decryption. And do not move your files.
Each time the timer expires, the total cost will raise.
After the purchase is made, wait 1-3 hour for our confirmation of the bitcoins.
After that click on “Decrypt Files” to Decrypt your files.

The rest of the text from the note that doesn’t have a red background, reads the following:

First send the bitcoin to this adress and then
click on the blue button
Send exactly 0.3 BTC to this address:
Note: You should send the bitcoins to this adress
Click here if you send the bitcoins
Note: You can purchase bitcoins from this sites for yourself
https://localbitcoins.com
https://www.coinbase.com
https://cex.io (UK)
https://paxful.com

There is also an additional message in one of the found samples. It looks like the following:

As you can see, the cyber crooks would demand around 200 US dollars as payment for unlocking your files. You should NOT ever think of paying that sum of money. This will only financially support the cybercriminals without knowing if you are going to get your files back. Nobody can give you a guarantee that you will restore your files upon payment.

The CryptoBlock ransomware doesn’t seem to encrypt files for now, or at least their names just get scrambled as the virus is still in development. The encryption algorithm might really be set to be RSA-2048. But you can see that the criminals are eagerly working on their project:

Here is a partial list of extensions that the ransomware will seek to encrypt:

→.mny, .mrw, .myd, .ndd, .nef, .nop, .nrw, .nwb, .nxl, .nyf, .odb, .odf, .odg, .odm, .orf, .otg, .oth, .otp, .ots, .ott, .pdd, .pem, .plc, .pot, .py, .qba, .qbr, .qbw, .qbx, .qby, .raf, .rat, .raw, .rdb, .rwl, .rwz, .sda, .sdf, .srf, .srw, .std, .sti, .u.stw, .stx, .sxd, .sxg, .sxi, .sxm, .tex, .wpd, .xis, .wallet.dat

The CryptoBlock cryptovirus could erase the Shadow Volume Copies from the Windows operating system by using the following command line:

→vssadmin.exe delete shadows /all /Quiet

Read on further to find out what restoration methods you could try out to recover files in the chance they become encrypted by this ransomware.

Remove CryptoBlock Ransomware and Restore Your Files

If your computer got infected with the CryptoBlock ransomware virus, you should have some experience in removing malware. You should get rid of this ransomware as fast as possible before it can have the chance to spread further and infect more computers. You should remove the ransomware and follow the step-by-step instructions guide given below. To see ways that you can try to recover your data, see the step titled 2. Restore files encrypted by CryptoBlock.

Manually delete CryptoBlock from your computer

Note! Substantial notification about the CryptoBlock threat: Manual removal of CryptoBlock requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove CryptoBlock files and objects
2.Find malicious files created by CryptoBlock on your PC

Automatically remove CryptoBlock by downloading an advanced anti-malware program

1. Remove CryptoBlock with SpyHunter Anti-Malware Tool and back up your data
2. Restore files encrypted by CryptoBlock
Optional: Using Alternative Anti-Malware Tools

Berta Bilbao

Berta is the Editor-in-Chief of SensorsTechForum. She is a dedicated malware researcher, dreaming for a more secure cyber space.

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