STOP Ransomware is file-encrypting ransomware-type virus, that encrypts user files using AES (режим CFB) encryption algorithm. DJVU Ransomware is identified as variation of STOP Ransomware. Virus appends .djvu, .udjvu or .djvuu extension to encrypted files, what can embarrass some users, as this is popular file format for e-books and storing scanned documents. When encryption is finished DJVU Ransomware places _openme.txt text file with following content in the folders with affected files and on the desktop.