See also: https://en.m.wikipedia.org/wiki/Argumentum_ad_populum
During the conspiracy, the FSB officers facilitated Belan’s other criminal activities, by providing him with sensitive FSB law enforcement and intelligence information that would have helped him avoid detection by U.S. and other law enforcement agencies outside Russia, including information regarding FSB investigations of computer hacking and FSB techniques for identifying criminal hackers. Additionally, while working with his FSB conspirators to compromise Yahoo’s network and its users, Belan used his access to steal financial information such as gift card and credit card numbers from webmail accounts; to gain access to more than 30 million accounts whose contacts were then stolen to facilitate a spam campaign; and to earn commissions from fraudulently redirecting a subset of Yahoo’s search engine traffic.
Here's what the Treasury had to say about it in April [2]:
To bolster its malicious cyber operations, the FSB cultivates and co-opts criminal hackers, including the previously designated Evil Corp, enabling them to engage in disruptive ransomware attacks and phishing campaigns.
More about Evil Corp etc in [3].
[1] https://www.justice.gov/opa/pr/us-charges-russian-fsb-office...
[2] https://home.treasury.gov/news/press-releases/jy0127
[3] https://apnews.com/article/business-technology-general-news-...
Go on
There is much more if you care to go down that rabbit hole.
https://blog.malwarebytes.com/threat-analysis/2017/06/eterna...
Why call it diskcoder.c anyway? It’s Petya
It's the same as domestic operations here in the USA: GRU comes up with ways to run loosely controlled groups that are accomplishing roughly the same ends. It's about making the battle space more confusing and unpredictable, and it's been going on for quite some time, very successfully. The soldiers don't report back to central control: they're NOT controlled, they're just loosely directed.
This would be the same. The hackers doing this don't have to be direct agents here, they're sheltered by the Russian state and only need to have some indication of where and what to strike. It's one-way communication, and it's possible to get the desired feedback through things like Facebook and Google Analytics (by paying for it like any ordinary customer).