Kaspersky Securelist
APT Trends report, Q1 2017 (DPRK-related paragraph 1) · 2017-04-27
Our analysis linked the attack with the BlueNoroff/Lazarus group, which has been responsible for multiple other bank attacks, including the famous Bangladesh bank heist. This waterhole attack revealed, for the first time, one of the strategies used by BlueNoroff for gaining a foothold in its target organizations. Although the attack didn’t use any zero days, the Flash Player and Silverlight exploit appeared to be enough to compromise a large number of banks, which were running on outdated software.