The GRU's Disruptive Playbook
mandiant.com
mandiant.com
So they specifically target Windows machines only? Or is that just the biggest attack vector and therefore easiest to do repeatedly?
I had to look up "wiper".
TL;DR the GRU first find a vulnerability, and break in; then they consolidate their bridgehead; then they create havoc, either by destroying static data, or by sending bogus information using bogus personas.
This doesn't sound like something I didn't already know.