Malware
HanGhost
According to ANY.RUN, this is a multi-staged loader that uses in-memory loaded .NET assembly code to download a PNG, from which the payload to be delivered is extracted.
HanGhost is a Windows malware family.
Background
ANY.RUN describes this as a multi-stage loader that runs .NET assembly code in memory to fetch a PNG file, then extracts the final payload out of that image.
Source: Malpedia (Fraunhofer FKIE).