Well, I found lots of files and folders in temp dir, and among them I found this folder:
{76B6ED0B-E849-4F37-BE58-562E08DA5A21}
which contained another folder and file:
{135EB671-FB94-456C-B528-AB30B6C648FD}
corecomp.ini
And in this last folder there were files:
_IsRes.dll
default.pal
isrt.dll
isrtp32.dll
license.txt
patchDetails.txt
patchw32.dll
setup.inx
StringTable-0009-English.ips

setup.inx - is it the script?

And another question... I have unpacked setup. Probably I'll be able to decompile script and correct it. How can I compile all this stuff back together?