Cry9 Ransomware

Also Known As: Cry9 virus
Distribution: Low
Damage level: Severe

Cry9 ransomware removal instructions

What is Cry9?

Cry9 is an updated version of a ransomware-type virus called CryptON. Criminals proliferate this malware via RDP (remote desktop services) brute force attacks, which allow them to hijack computers and execute the malicious ransomware installer. Following infiltration, Cry9 encrypts various files using RSA and AES cryptographies. During encryption, it appends filenames with one of the extensions listed below. Following successful encryption, this rogue software changes the desktop wallpaper and creates an HTML file ("### DECRYPT MY FILES ###.html"), placing it in each folder containing encrypted files.

The HTML file contains a message stating that files are encrypted and that the victim must pay for a 'special decrypter' to restore them. To submit payment, they are encouraged to open a Tor website (link provided) and follow the instructions. As mentioned above, Cry9 uses AES and RSA encryption algorithms and, therefore, decryption without unique keys is impossible. Cyber criminals store these keys on a remote server and victims are forced to purchase a decryption tool with the keys embedded within. The cost is currently unconfirmed, however, cyber criminals usually demand the equivalent of between $500 and 1500 in Bitcoins. Research shows, however, that paying does not guarantee that your files will ever be decrypted. Cyber criminals often ignore victims, once payments are submitted and it is highly probable that you will be scammed. We strongly advise you to ignore all requests to pay or contact these people. Fortunately, Fabian Wosar has developed a decryption tool capable of restoring files free of charge. Therefore, there is no need to pay any ransom. If, however, your computer has been infected with undecryptable ransomware, the only way to resolve the problem is to restore files/system from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Cry9 decrypt instructions

There are many viruses that are derived from the same family as Cry9 (for example, Nemesis, X3M). All have identical behavior - they encrypt files and make ransom demands. In fact, all ransomware-type viruses are virtually identical. There are just two major differences: 1) type of encryption algorithm [symmetric/asymmetric] used, and; 2) cost of decryption. Even the distribution methods are identical - most cyber criminals proliferate ransomware by employing spam emails (malicious attachments), third party software download sources (freeware download websites, free file hosting websites, peer-to-peer networks, etc.), fake software update tools, and trojans. Therefore, never download files received from suspicious emails or download software from unofficial sources. Furthermore, keep your installed applications up-to-date and use a legitimate anti-virus/anti-spyware suite. Bear in mind, however, that criminals proliferate malware by employing fake updaters. Therefore, using third party tools to update installed software is very risky. The key to computer safety is caution.

Update 5 May, 2017 - Cyber criminals have updated this ransomware, which is now called Cry128. It uses the .onion._, .onion and .onion.to._ extensions, applying them to encrypted files. For ransom demand notes, Cry128 uses _DECRYPT_MY_FILES.txt and -DECRYPT-MY-FILES.txt.

Files encrypted by this ransomware appear as follows:

1.jpg.id_[victim’s unique ID]_gebdp3k7bolalnd4.onion._
1.jpg.id_[victim’s unique ID]_1506904074_fgb45ft3pqamyji7.onion
1.jpg.fgb45ft3pqamyji7.onion.to._

Fortunately, security researcher, Fabian Wosar, has developed a free decrypter for Cry128 ransomware. You can download it HERE.

cry128 ransomware decrypter

Text presented within Cry9 ransomware HTML file ("### DECRYPT MY FILES ###.html"):

ALL YOUR WORK AND PERSONAL FILES HAVE BEEN ENCRYPTED

To decrypt your files you need to buy the special software – «- decryptor»
To recover data, follow the instructions!

You can find out the details/ask questions in the chat:
hxxps://wqfhdgpdelcgww4g.onion.to (not need Tor)

If the resource is not available for a long time, install and use the Tor-browser:
1. Run your Internet-browser
2. Enter or copy the address hxxps://www.torproject.org/download/download-easy.html in the address bar of your browser and press key ENTER
3. On the site will be offered to download the Tor-browser, download and install it. Run.
4. Connect with the button "Connect" (if you use the English version)
5. After connection, the usual Tor-browser window will open
6. Enter or copy the address hxxp://wqfhdgpdelcgww4g.onion in the address bar of Tor-browser and press key ENTER
7. Wait for the site to load

Screenshot of Cry9 desktop wallpaper:

Cry9 wallpaper

Screenshot of files encrypted by Cry9 ransomware:

Files encrypted by Cry9

List of extensions used by Cry9 ransomware:

.-juccy[a]protonmail.ch; .id-; .id-_[nemesis_decryptor@aol.com].xj5v2; .id-_r9oj; .id-_x3m; .id-_[x3m-pro@protonmail.com]_[x3m@usa.com].x3m; .; .-sofia_lobster[a]protonmail.ch and ._[wqfhdgpdelcgww4g.onion.to].r2vy6”; “.id-_[wqfhdgpdelcgww4g.onion.to].mf8y3”

Cry9 ransomware decrypter by Emsisoft (download it HERE):

Cry9 decrypter download

Cry9 ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Cry9 virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Cry9 ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Cry9 ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Cry9 are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by Cry9, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Cry9 ransomware.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove Cry9 ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Cry9 virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Cry9 virus on your mobile device.
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