The U.S. and the European Union formally blamed Russia on Tuesday for an attack on a satellite network in February that crippled satellite networks in Ukraine and its neighbors, disrupting communications and a wind farm. On February 24, an hour before Russia attacked Ukraine, thousands of satellite terminals of satellite communications company Viasat in Europe and Ukraine were attacked. The attackers used a VPN to access the company’s KA-SAT satellite network and searched its internal network. A specific network is found to be managed and operated, and at the same time a corrupt command is sent to the user’s modem to overwrite the flash memory. The malicious program used by the attackers was named AcidRain, and security researchers found 55 percent code similarity to dstr, a wiper module from Russia’s VPNFilter.
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