How to remove MoonCrypter virus and restore encrypted files

MoonCrypter ransomware virus

The item is dedicated to ransomware called MoonCrypter which penetrates users' computers in diverse countries of the world, and encrypts their data. Here you can find important information on MoonCrypter's essence, and how to uninstall MoonCrypter from your laptop. In addition, we will explain how to restore the encrypted data and is it possible.

MoonCrypter ransomware already penetrated many computers in various countries through most effective manner: scam messages with viral attachments. Sometimes web-criminals use zero-day vulnerabilities to take control over the computer, but big program vendors quickly fix them. When infection is done, the virus examines the hard drive, defines the number of folders for encryption and their general price. Currently, any new virus can cypher image, video, audio and text files in all known extensions. MoonCrypter cyphers all files, but those that look like business documents go first. MoonCrypter encrypts only files with information, and doesn't touch the programs, so that the man can use his PC to make the payment. Encryption is made with the help of well-known AES and RSA algorithms, and its intricacy is so high that decipherment of information with no key is impossible. Such complexity is the reason for impressive success of ransomware in recent years: common user, even having a pretty good experience in suchlike things, won't ever get back the files, and will have no way out except paying to scammers. The only method to decrypt files is to crack the scammer's site and withdraw the encryption keys. Some skilled hackers can get the keys via defects in viruse's program code. The encrypted files acquire .cmoon extension.

The computer knowledge is highly important in our world, since it helps customer to protect the machine from harmful software. For ransomware this is most important, because, in contradistinction to common viruses, after uninstalling ransomware from the system, the effects of its actions will stay. To defend yourself, you need to remember a three simple principles:

    • Closely inspect your emails, particularly those messages that have attached files. If you don't know the user who send an e-mail and it is about winning some prize, a lost parcel or anything like that, this might be ransomware. Also you should be attentive with business correspondence, especially if you don't know the sender and not sure what's inside. appeals, lawsuits, summaries, Invoices for services and goods and suchlike specific information cannot come without warning, and you, as a minimum, should know the person who sent it. In all other cases it is a fraud.
    • Don't disregard the red flags that your PC shows. File encrypting is a complex process that requires a lot of PC resources. If you observe a strange decrease in workstation performance or see a unknown string in the Process Manager, you can switch off the workstation, start it in safe mode, and scan for threats. This, in case of infection, will guard some of your files.
    • Take notice to the pop-ups. If the computer is infected by ransomware, it will try to delete all copies of the files, to make the recovery less possible. Anyway, removal of copies requires admin rights and your acceptance. If you'll think for a moment before confirming the changes, it might save your files and your money.

Virus uninstalling isn't answer to the whole issue - it's only a first move from many before the full data restoration. To recover the data you should read the tips in the special chapter of this article. In case of ransomware we don't publish the by-hand deletion instruction, because its complication and the probability of faults will be too high for common customer. High class viruses can't be deleted even through AV-tool, and have other efficient mechanics of defense. The very effective ransomware defensive technique is the uninstalling of information on the chance of file restoration or malware deletion attempt. To avoid this, abide to the tips below.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner


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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

After removing MoonCrypter from the workstation, it only remains to get back the polluted information. Actually, this is not literally decipherment, since the encrypting methods owned by scammers are extremely complicated. Generally, to get back the files, you should seek help on targeted communities or from celebrated virus fighters and antivirus software manufacturers. If you picked the independent file recovery - take a look at our article, which describes all the easiest methods.

To restore information, follow the article about files decryption.

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