Throughout the autumn of 2018 we analyzed a long-standing (and still active at that time) cyber-espionage campaign that was primarily targeting foreign diplomatic entities based in Iran. The attackers were using an improved version of Remexi in what the victimology suggests might be a domestic cyber-espionage operation. This malware has previously been associated with an APT actor that Symantec calls Chafer.

https://securelist.com/chafer-used-remexi-malware/89538/