What you are looking for is not in the mod.
Open orcs.kfc with rar/zip program, find the file logic_hero.lua and go to line 287
The strings with the runes for every class when leveling up look like this:
rune_war={"6,4,2","5,5,2","6,3,3","7,4,1"}
rune_pal={"3,6,3","2,7,3","3,5,4","4,6,2"}
rune_mag={"2,4,6","1,5,6","2,3,7","3,4,5"}
there are 4 columns of numbers for every class, they are for levels 1-4 then the string just repeats itself. The first number in every string is for might runes, then mind runes, the third number is for magic runes.