Dick O'Brien from Symantec’s Threat Hunter team discusses their research on "Blackfly - Espionage Group Targets Materials Technology." Researchers say the Blackfly espionage group (aka APT41), has been mounting attacks against Asian materials and composite organizations in attempts to steal intellectual property.
This group has been known as one of the longest known Chinese advanced persistent threat (APT) groups since at least 2010. The research shares that "early attacks were distinguished by the use of the PlugX/Fast (Backdoor.Korplug), Winnti/Pasteboy (Backdoor.Winnti), and Shadowpad (Backdoor.Shadowpad) malware families."
The research can be found here: 
Blackfly: Espionage Group Targets Materials Technology