PyLocky ransomware is written in Python and ships with PyInstaller. It spread via emails. The emails usually have very convincing invoice attachments.
Download EOEO an AuotIt ransomware sample.
CryptoNar Ransomware or CryptoJoker 2018 Ransomware demand Bitcoins of worth $200. It append .cryptoNar extension to its infected files.
Shrug2 or ShrugTwo is .net ransomware that encrypts 76 types of files and demand $70 in BTC for decryption key.
Termite Ransomware encrypt user data with AES encryption algorithm and demand ransom in BTC. It append .aaaaaa extension to encrypted files