If this were a legitimate archive from that era, it would typically contain:
KRNL has been widely reported as discontinued or patched following major anti-cheat updates (like Hyperion/Byfron). krnl_lastest (19-01-23).zip
The only historically recognized official site for KRNL was krnl.place. Downloads from other sites (including mediafire or random zip links) are highly unsafe. Typical Contents of Such a ZIP If this were a legitimate archive from that