Intel FIT build 6.0.40.1212 labelled IBX, in a RAR archive of about 572 KB. IBX refers to Ibex Peak, the Intel 5-series chipset platform served by ME 6 firmware. The Flash Image Tool opens SPI images, shows descriptor and Management Engine settings, and rebuilds a clean ME region for programming. It suits repair of first-generation Core laptops with ME corruption. Check the dump's ME version matches this branch and store a backup of the original chip before writing the rebuilt image.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @mfittool. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.