I was hacked - apache -webhosting

I checked my folders in my Inetpub  and noticed that all folders have the fresh date 18 August 2: and so.

I am finding this file: .htaccess with this inside:

RewriteEngine On
RewriteBase /
RewriteRule ^(.*)? http://musikkorps.com/mainfile.php

the file is in apache, am searching for more

this file is everywhere in my inetpub folders. i am removing it but how can I prevent it for the next time?

QUESTION: since it is endless amount of this file spread in my inetpub directory, what is the crucial location, i.e. where should I go first to remove it so as the websites will function again?

Ok, the answer is to remove it from the www root.

ANOTHER QUESTION:
is there a php script available I can use to dele htaccess files from todays date in one step?

To prevent this particular attack happening again, the easy fix is to add " AllowOverride None" to your apache config, this will prevent apache from using .htaccess files. If you do not use .htaccess files anywhere and want to delete them, you could just use a bash script to remove any (though it would be better to have all directories as read only for the apache user):

# find and remove all .htaccess files under /var/www
find /var/www/ -name '.htaccess' -exec rm {} \;

To make your directories read only, you could chmod ugo-w {directory} (add -r to make it recursive and change all directories). Some apps will need a few directories to be writeable, eg for cache, uploads etc, so be careful when changing directory permissions.

Have a look at http://httpd.apache.org/docs/current/misc/security_tips.html for some other good security tips.

unfurtonately I use Joomla with SEF-URL for almost all my clients, so .httaccess is inevitable.

I have windows OS, so what is a shell command for removing .httaccess from inetpub?

Have you checked Joomla and any of the makers of the plugins for patches to address security issues?

On windows you could make a batch file that runs

cd \your\web\root <- replace with inetpub or your webroot path
del /S .htaccess

This will recursively delete all .htaccess files (I have not tested this as I dont have a windows computer to play with, so try it first where it wont destroy things!). You could then add this as a scheduled task to run every day/hour etc

csalaski: -> it happened also on freshly installed joomla

is there a way how to forbid overwritting .httaccess in general config of apache?
(I have windows).

I do not want to do it od windows folder level manualy since I have a lot of files.