Loader
Croxloader
According to Trend Micro, this is a custom loader for win.cobalt_strike, used by Earth Longzhi (a subgroup of APT41).
Croxloader is a Windows loader.
Background
Per Trend Micro, this is a bespoke loader for win.cobalt_strike, employed by Earth Longzhi, a subgroup of APT41.
Source: Malpedia (Fraunhofer FKIE).