SiliVaccine: Inside North Korea’s Anti-Virus
In Summary : The strange email sent by ‘Kang Yong Hak’, supposedly a Japanese engineer, contained a link to a Dropbox-hosted zip file...
https://updatesinfosec.blogspot.com/2018/05/silivaccine-inside-north-koreas-anti.html

In Summary :
The strange email sent by ‘Kang Yong Hak’, supposedly a Japanese engineer, contained a link to a Dropbox-hosted zip file that held a copy of the SiliVaccine software, a Korean language readme file instructing how to use the software and a suspicious looking file posing as a patch for SiliVaccine[...]
kindly refer the following link as follow up :
https://ift.tt/2jizl1k