APT 28, also known by other nicknames such as Tsar Team, Operation Pawn Storm, and Sednit, has been a busy gang targeting government agencies and military operations with a host of Adobe Flash, Microsoft and Java-based zero-days at their disposal. This week alone, two of these zero-day attacks attributed to this team disappeared when they were patched by Microsoft and Oracle in Office and Java respectively. The group is thought to be tied to Russia, but this is highly unusual behavior, even for a state-sponsored cyberespionage team.
Source: https://threatpost.com/office-java-patches-erase-latest-apt-28-zero-days/113825/