Kaspersky technologies prevented an attack on a South Korean company by a malicious script for Internet Explorer. The attack used a previously unknown full chain that consisted of two zero-day exploits: a remote code execution exploit for. Internet Explorer 11 and Windows 10 build 18363 x64. We are calling this and related attacks Operation PowerFall. Currently, we are unable to establish a definitive link with any known threat actors, but due to similarities with previously discovered exploits, we believe that DarkHotel may be behind this attack.”]
Source: https://securelist.com/ie-and-windows-zero-day-operation-powerfall/97976/