Cccmn Ransomware

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

cccmn ransomware removal instructions

What is cccmn?

cccmn is a ransomware-type virus that belongs to CrySiS malware family. Following successful infiltration, cccmn encrypts most of stored data. It also appends filenames with ".cccmn" extension, as well as victim's ID and developers' email address. For instance, "sample.jpg" would be renamed to something like "[].cccmn". Once encrypted, data instantly becomes unusable. However, note that encryption is not the only cccmn's feature - it is also designed to display a pop-up window and place a text file ("FILES ENCRYPTED.txt") on victim's desktop.

The created text file contains a short message stating that data is encrypted and that victims must contact cyber criminals if they want to restore it. Pop-up, on the other hand, provides way more information. It is stated that in order to decrypt data users must buy a decryption tool. Information about the type of encryption is not provided and, thus, it is currently unknown whether cccmn uses symmetric or asymmetric cryptography. In any case, however, decryption requires a unique key generated individually for each victim. The problem is that the keys are stored in a remote server controlled by cyber criminals. For this reason, victims are forced to pay for the decryption tool with the key embedded within. The price isn't specified - it supposedly depends on how fast does victim contacts cyber criminals. We should mention that it typically fluctuates between $500 and $1500, and cyber criminals typically ask to pay in some sort of cryptocurrency (Bitcoins, Monero, DASH, or similar). Cyber criminals are also willing to decrypt one selected file (up to 1 MB, non-archived) for free. They do this in order to gain victim's trust and show that decryption is actually possible. Nevertheless, these persons should never be trusted. Research results show that cyber criminals often ignore victims, once payments are submitted. For this reason, paying usually gives no positive result and users simply get scammed. We highly recommend to ignore all encouragements to submit payments and even contact these persons. Unfortunately, there are no tools capable of cracking cccmn's encryption and restoring data for free. The only possible solution is to restore everything from a backup.

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

cccmn decrypt instructions

Internet is full of ransomware-type viruses that share similarities with cccmn. The list of examples includes (but it is not limited to) AUDIT, Supportfiless24, Ox4444, and YuALook. Despite the fact that these viruses are developed by different cyber criminals, their behavior is completely identical - all encrypt data and make ransom demands. The only major differences are size of ransom and type of encryption algorithm used. Unfortunately, viruses like cccmn typically employ cryptographies like RSA, AES, and similar that generate unique decryption keys. For this reason, manual decryption (without developers interfering) is most likely to be impossible. The only possible scenarios are ransomware being still in development and/or having certain bugs/flaws. These viruses present a strong case for maintaining regular data backups. However, it is important to store backups in a remote server (e.g., Cloud) or either unplugged storage device. If not, ransomware will encrypt backups together with regular data.

How did ransomware infect my computer?

It is currently unknown how exactly do cyber criminals spread cccmn. However, in most cases ransomware-type viruses are proliferated using trojans, email spam campaigns, fake software updaters, and unofficial software download sources. Trojans are designed to cause so-called "chain infections" - they simply open "backdoor" for other malware to infiltrate the system. Email spam campaigns proliferate malicious attachments that, once opened, download and install malware. Fake updaters infect computers by either exploiting old software's bugs/flaws or simply download and install malware rather than promised updates. Unofficial software download sources (torrents, eMule, freeware download websites, free file hosting sites, etc.) present malicious executables as legitimate software. This tricks users into downloading and installing malware by themselves.

How to protect yourself from ransomware infections?

Everyone should know that lack of knowledge and reckless behavior are the main reasons for computer infections. The key to it's safety is caution and, thus, paying attention when browsing the Internet, as well as downloading/installing/updating software is a must. Always think twice before opening email attachments. If the file/link has been received from someone suspicious and/or it looks irrelevant - do not open. Moreover, be sure to download apps only from official sources, using direct download links. Third party downloaders/installers often include rogue software, which is why such tools shouldn't be used. Same rule applies to software updates. It is important to keep installed programs up-to-date. However, this should be achieved through implemented functions or tools provided by the official developer only. Having a reputable anti-virus/anti-spyware suite installed and running is also paramount, because such tools are more than likely to detect and eliminate malware before anything bad happens. If your computer is already infected with cccmn, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Screenshot of cccmn's text file:

cccmn text file

Screenshot of files encrypted by cccmn (".cccmn" extension):

Files encrypted by cccmn

cccmn ransomware removal:

Instant automatic removal of cccmn virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of cccmn virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

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 cccmn 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 cccmn 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 cccmn 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 cccmn 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 cccmn, 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 cccmn ransomware.

Note that Windows 10 Fall Creators Update includes "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default this feature automatically protects files stored in Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here�s more information on how to get this update and add additional protection layer from ransomware infections.

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 cccmn ransomware: