Please. Any article connected with Crowdstrike instantly loses all credibility. As for FireEye... word has it that they've never met a hacker that wasn't Russian. Symantic though... welll, they had something to say about Dimitri Whatshisface (I'm tired of looking up the spelling) back when he did a big scary article for Vanity Fair...
https://www.symantec.com/connect/blogs/truth-behind-shady-rat
And for good measure...
https://eugene.kaspersky.com/2011/08/18/shady-rat-shoddy-rat/
Thanks a lot for the comments, atomicnixon.