After Russia’s unprovoked invasion of Ukraine, several cybercriminals condemned Russia’s actions and vowed not to attack Ukrainian organizations. At the same time, users on Russian criminal forums publicly supported Russia. It is likely these supporters are responsible for the website attacks in some way. It is no secret that Russian Intelligence leverages state sponsored actors to carryout cyber operations. The support from criminals who were previously only motivated by financial gain may have presented Russia with more options to conduct these attacks, or simply encourage independent hackers to conduct attacks. It is possible Russia is utilizing known threat actors to carry out DDoS attacks in Ukraine; it is more likely these individuals are carrying out these attacks on their own in support of Russia out of a sense of patriotism. Either way, Vladimir Putin has paved the way for a full scale cyber war in Ukraine.

https://www.bleepingcomputer.com/news/security/ukraine-targeted-by-ddos-attacks-from-compromised-wordpress-sites/