From gbhackers.com
Turla cyberespionage groups developed an advanced piece of Malware named as LightNeuron that specifically target the Microsoft exchange server and spying on sensitive emails.
Turla, also known as Snake is one of the most potent APT hacker’s group and the This APT group well-known for using sophisticated customized tools to attack high profile targets.
Tular is also responsible for some of the high-profile breaches including United States Central Command in 2008, Swiss military company RUAG in 2014, French Armed Forces in 2018 and the APT has actively attacked more than a decade.