The Assembly Manifest can be stored in Portable Executable (PE) file as (.Exe or.dll) with Microsoft intermediate language (MSIL) code.

An assembly manifest contains all the metadata needed to specify the assembly's version requirements and security identity, and all metadata needed to define the scope of the assembly and resolve references to resources and classes. The assembly manifest can be stored in either a PE file (an .exe or .dll) with Microsoft
intermediate language (MSIL) code or in a standalone PE file that contains only assembly manifest
information.