Malware
Scieron
The Chinese threat actor has used a custom backdoor dubbed "Scieron" over years in several campaigns according to SentinelLABS.
Scieron is a Windows malware family.
Background
SentinelLABS reports that a Chinese threat actor relied on this purpose-built backdoor, named "Scieron," across multiple campaigns spanning several years.
Source: Malpedia (Fraunhofer FKIE).