From 2-spyware.com
![Usam ransomware virus](https://www.2-spyware.com/news/wp-content/uploads/virusai/usam-ransomware-virus_en.jpg)
Usam ransomware – a highly-malicious malware that locks the data on the Windows machine and blackmails victims to extort the money. The criminals behind this file-encrypting virus[1] are infamous hackers that have launched STOP / Djvu ransomware a couple of years back and managed to release 233 new versions of the same virus.