Russia's Interior Ministry has confirmed that it has suffered a cyber attack.
Russian police computers have been hit while Russian telecom giant Megafon has also reported being affected by the attack.
Megafon's internal network has been affected, disrupting services by its support team, reports RT.com.
A similar attack took place on the computer network of Telefonica, the Spanish telecommunications company.
At least 74 countries around the world have been affected by an international ransomware cyberattack.
Costin Raiu, director of Global Research and Analysis Team at cyber security company Kapersky Labs, said: "Currently, we have recorded more than 45,000 attacks of the WannaCry ransomware in 74 countries around the world, mostly in Russia. It's important to note that our visibility may be limited and incomplete and the range of targets and victims is likely much, much higher."
NHS England declared a major incident after a cyber attack hit 40 trusts across the country on Friday (12 May) afternoon.
Prime Minister Theresa May said in a statement shortly after 7pm: "We are aware that a number of NHS organisations have reported that they have suffered from a ransomware attack. This is not targeted at the NHS, it's an international attack and a number of countries and organisations have been affected."