From kitploit.com
A proof of concept crypto virus to spread user awareness about attacks and implications of ransomwares. Phirautee is written purely using PowerShell and does not require any third-party libraries. This tool steals the information, holds an organisation’s data to hostage for payments or permanently encrypts/deletes the organisation data.
Phirautee is a Living off the Land (LotL) ransomware which means it utilises legit powershell commands and operations to work against the operating system.