VERY IMPORTANT

Tick is a cyberespionage group primarily targeting organizations in Japan and the Republic of Korea. The group is known to conduct attack campaigns with various custom malware such as Minzen, Datper, Nioupale (aka Daserf), and HomamDownloader. Unit 42 last wrote about the Tick group in July 2017. Recently, Palo Alto Networks Unit 42 discovered the Tick group targeted a specific type of secure USB drive created by a South Korean defense company. The USB drive and its management system have various features to follow security guidelines in South Korea.