The notorious ransomware gang ends a two-year hiatus by carrying out opportunistic ransomware attacks.

Denys Iarmak, a Ukrainian national, was involved with the Russia-linked hacking group between November 2016 and November 2018.

Ransomware strains such as Maze, Ryuk and BlackCat have increasingly been part of FIN7's playbook in recent years, Mandiant says.

Two of his alleged associates were sentenced to 10 and seven years in prison in separate cases.

Hackers are also turning to trusted services like Dropbox and Google Drive to host and distribute malware.

It's the full amount of time that prosecutors requested.

Prosecutors are seeking seven years in prison for one member of the hacking crew.

Prosecutors described Hladyr as a "technical guru" integral to FIN7's operations.

The Ukrainian national faces up to 25 years in prison in the U.S. It's estimated that FIN7 stole about $1 billion overall.

Details revealed in recent U.S. charges bear striking similarities to prior hacking tactics.