Mp3 is the TeslaCrypt 3.0 build that appended .mp3 to encrypted files, active in early 2016. Its notes come in text, image and HTML copies named with a help-and-recover pattern such as _H_e_l_p_RECOVER_INSTRUCTIONS+ plus three letters, later Recovery+ plus five letters. It hit home users widely and dropped the program window of earlier versions in favour of an HTML note. The TeslaCrypt operators shut the operation down in May 2016.
Sources: In-house research
Decryptor: Decryptor availability has not been recorded.
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