Bloccato is dangerous virus, that belongs to the family of ransomware crypto-viruses. It uses AES-256 asymmetric encryption algorithm to encrypt users personal files on infected computer. Virus adds .bloccato extension to all encrypted files and creates LEGGI QUESTO FILE.txt text file that contains instructions to pay the ransom and obtain private decryption key. Ransom is 5 BitCoins or $2200+.
CryptXXX is ransomware crypto-virus. It encrypts user personal data with AES CBC 256-bit algorithm and asks for RSA-4096 key. Actually, CryptXXX also steals bitcoins stored on the computer if there are any. Virus modifies names and extension of all encrypted files to .crypt, changes desktop wallpaper using de_crypt_readme.bmp (image with black background and white text), creates text file with instructions to pay the ransom (de_crypt_readme.txt), and html file with the same instructions (de_crypt_readme.html). Ransom is about 1.2 BitCoins or $400. CryptXXX attacks data on local drives and attached storage devices.
CTB-Locker is very wide-spread and dangerous ransomware virus. It uses RSA-2048 encryption to encrypt various types of files stored on users computers (documents, images, photos, music, videos). Then CTB-Locker demands the ransom of $120 – $300 and shows message on your desktop: “Your personal files are encrypted by CTB-Locker”. Ransomware also creates text file with instructions DecryptAllFiles.txt in every affected folder. The virus itself is rather simple to remove, however we recommend you to use removal tool.
Locky is ransomware virus that encrypts you files using the RSA-2048 and AES-1024 algorithms and demands 0.5 BTC (bitcoins) (equivalent to $207) for receiving “Locky Decrypter” to allow user decrypt his documents and images. This is very dangerous blackmailing virus and there are currently only few ways to decrypt your files.