New answers tagged file-format
1
These file are created using PatchAPI and MSDelta API:
Link to MSDN article on subject
5
This is only a partial answer but the data at offset 0x100 looks very much like that produced by Microsoft's C++ MFC serialization.
Specifically, the FFFF is a 'new class tag' followed by -
0001 a schema version
0011 length of class name
'CSampleBackupFile' class name (using naming convention consistent with MFC's)
Decent information on MFC Serialization ...
Top 50 recent answers are included