What is CryptoDefense Virus?
The CryptoDefense Virus, or simply CryptoDefense, is a highly dangerous computer infection which encrypts computer data so that it cannot be accessed without a secret key or password, which enables the computer user to decrypt the files. When the so-called CryptoDefense Virus encrypts data, the user is provided with a ransom warning, according to which, he/she has to pay $500 in Bitcoins, which is a type of electronic currency. The ransomware program has already infected over 20,000 computers and managed to collect more than $34,000. Payments are made through the Torn network; therefore, the criminals behind CryptoDefense have not been detected yet.
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How does the CryptoDefense Virus work?
The CryptoDefense Virus is infiltrated to the system through the attachments of spam emails and may also be distributed through P2P networks. If you want to prevent computer infections and data loss, do not open email letters that are sent from an unknown sender or that have catchy subject lines.
When you find that your data is encrypted by the CryptoDefense ransomware infection, do not pay the money but remove the infection, unless you have backed up your data earlier and can use it on another PC. If not, keep on reading to find out how to remove CryptoDefense from your PC and decrypt your data.
The CryptoDefense Virus encrypts a variety of files, including .doc files, .ppt files, .jpg files, and .pds files. The vicious infection is capable of afflicting Windows XP, Windows Vista, Windows 7, and Windows 8. Unlike ransomware infections that lock the screen, the CryptoDefense Virus creates files that contain information on how to decrypt the data, and the information is given in How_Decrypt.txt, How_Decrypt.html and How_Decrypt.url. In order to decrypt the files without paying the ransom, jump to the instruction provided below.
The CryptoDefense Virus has been found to use RSA-2048 encryption, which is presented to the victims in the ransom warnings. Unlike the infamous CryptoLocker Trojan, the CryptoDefense Virus leaves a copy of the key which is necessary to decrypt the files, which means that you can regain access to your data without paying the ransom.
The private decryption key can be located in the %TEMP%, %Program Data%, or AppData\Roaming\Microsoft\Crypto\RSA. It can also be stored in a .txt file or a .cert, .crt or .ptx file. When you find the key, it is enough to double-click on in order to decrypt your data.
How to remove the CryptoDefense Virus?
When it comes to the removal of the ransomware, we recommend that you use SpyHunter because it can eliminate the infection and safeguard the system against other computer threats. By removing the CryptoDefense Virus from the PC, you minimized the risk of getting the data encrypted once again after you decrypt it.
Having removed the CryptoDefense Virus, follow our guide to decrypt your files.
How to decrypt your files
- Open the Start menu.
- Click Control Panel.
- Select User Accounts and Family Safety.
- Click User Accounts.
- Select Manage your file encryptioncertificates on the left side of the window.
- Click Next.
- Select the Use this certificate option.
- When the RSA key is detected, click on the key.
- Click Next.
- Select Back up the certificate and key later.
- Click Next.
- Select All logical drives and click Next.
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