Malware
Curator
aka Ever101 · SunnyDay
Profero describes this as a ransomware family using CryptoPP as library to enable file encryption with the Salsa20 algorithm and protecting the encryption keys with RSA2048.
Curator, also known as Ever101, SunnyDay, is a Windows malware family.
Background
According to Profero, this is a ransomware family that leverages the CryptoPP library to encrypt files with the Salsa20 algorithm while safeguarding the encryption keys using RSA2048.
Source: Malpedia (Fraunhofer FKIE).