In December 2018, FireEye identified APT39 as an Iranian cyber espionage group responsible for widespread theft of personal information. We have tracked activity linked to this group since November 2014 in order to protect organizations from APT39 activity to date. APT39’s focus on the widespread theft of personal information sets it apart from other Iranian groups FireEye tracks, which have been linked to influence operationsdisruptive attacks, and other threats.

https://www.fireeye.com/blog/threat-research/2019/01/apt39-iranian-cyber-espionage-group-focused-on-personal-information.html