FinFisher (aka FinSpy or Wingbird) is a spyware toolset for Windows, macOS, and Linux developed by Anglo-German firm Gamma International and supplied exclusively to law enforcement and intelligence agencies. The tool was previously deployed through tampered installers of legitimate applications such as TeamViewer, VLC, and WinRAR that were backdoored with an obfuscated downloader. But subsequent updates in 2014 enabled infections via Master Boot Record (MBR) bootkits that’s engineered to slip past security tools.”]
Source: https://thehackernews.com/2021/09/new-finspy-malware-variant-infects.html