Robuta

https://securityaffairs.com/1129/cyber-crime/stuxnet-duqu-and-the-sons-of-the-tilded-platform.html
We all have heard of Stuxnet viruses, malware that has undoubtedly marked a new era in the field. It is considered by experts the first real cyber weapon...
platform securitystuxnetduqusons
https://www.trendmicro.com/vinfo/us/threat-encyclopedia/malware/troj_duqu.aa
This Trojan arrives as a component bundled with malware/grayware packages.It requires its main component to successfully perform its intended routine.
threat encyclopediatrend microtrojduquaa
https://www.information-age.com/unknown-duqu-code-was-customised-c-27034/
A previously mysterious portion of the Duqu trojan was written in a customised version of the popluar programming language C
information ageunknownduqucodecustomised