Can you confirm that when you disable ISAPI_Rewrite these strange pages/folders disappear? Please note that ISAPI_Rewrite only rewrites response headers and can't generate anything, so it's highly unlikely to be the cause of the issue.
BTW, your config is the mixture of ISAPI_Rewrite 2 and 3 syntax. If it's v2, please fix it like this:
[ISAPI_Rewrite]
RewriteCond %HTTPS off
RewriteCond Host: (?!www.domain.com).+
RewriteRule /(.*) http\://www.domain.com/$1 [I,RP]
RewriteRule /httpd(?:\.ini|\.parse\.errors).* / [I,O]
RewriteRule /(.+)-([^-]*)-([^-]*)-([^-]*)\.html$ /detail.asp\?brand=$1&model=$2&id=$3&lg=$4 [L]