Megalodon malware recently spreading via phishing email campaigns. An Microsoft Excel files is sent which on successful execution download and run a RAT/ key-logger.
Cossy or Grafimatriux Ransomware is a Russian ransomware that encrypts user files with RSA-2048 and demands a ransom in BTC worth 50 rubles.
Black Worm Ransomware encrypt user data with BTC and demand ranwom in BTC. Encrypted files have .bworm extension appended to them.
tRat is a modular delphi remote access trojan from the threat actor TA505. TA505 was previously responsible for Dridex and Locky campaigns.
FORMA Ransomware is a HiddenTear derivative apparently target toward Polish population. It encrypts files using AES and demands ransom in BTC.