[wp-hackers] attack on wp-admin/install.php

[Mika Epstein]

Block it in your htacess first, actually. That's way easier.

Based on what info you gave us, we can't diagnosis anything. Check your SERVER logs. Did a file get edited or go missing? The problem is not that the file was being hit by millions of people, the problem is why did WP not know it was installed? Check your logs to see if anything happened to the DB. Was it unreadable? Did you add/remove a plugin recently? Did you upgrade?

Your mentioned changes to login and admin shouldn't cause anything like this, it's purely WP no longer thinking it was installed. So what have you done to diagnosis THAT? :)

> On Oct 9, 2013, at 2:19 AM, Konrad Karpieszuk <kkarpieszuk at gmail.com> wrote:
> 
> first of all i want to know *why*. :) i;ve got tens of wordpress sites and
> i will have more. i dont want to delete install.php every time (and after
> every wordpress upgrade). also maybe we have totally new way to hack
> wordpress sites (as you can see it is somehow working, because intruded
> broke my site)
> 
> 
> --
> (en) regards / (pl) pozdrawiam
> Konrad Karpieszuk
> http://tradematik.pl wtyczka do WordPressa do tworzenia sklepów dla
> klientów z Polski
> 
> 
> 
> On Wed, Oct 9, 2013 at 9:54 AM, Abdussamad Abdurrazzaq <
> abdussamad at abdussamad.com> wrote:
> 
>> If you are this worried you can always delete install.php.
>> 
>> 
>>> On 10/09/2013 12:35 PM, Konrad Karpieszuk wrote:
>>> 
>>> ok, one more  info which i thought isn't relative to this problem, but
>>> maybe.
>>> 
>>> three months ago somebody start this famous ddos attack to wp-login.php at
>>> those websites. tens of times per second somebody tried to login into
>>> dashboard using random passwords. at beginning i resolved this in
>>> .htaccess
>>> by adding rules that nobody except from my ip address can acces to
>>> wp-login.php. but beacouse i have cowriter without permamnent IP address,
>>> this was not good solution
>>> 
>>> so few days ago i changed in files:
>>> wp-login.php
>>> wp-admin/index.php
>>> 
>>> first line from:
>>> 
>>> <?php
>>> 
>>> to
>>> 
>>> <?php if ($_COOKIE["superauth"] != "yep") exit("dostep zabroniony"); //
>>> 
>>> 
>>> it check if we got some 'secret' cookie and if cookie is absent it
>>> immadietly execute die().
>>> 
>>> It looks like good solution: wordpress core isnt started at all, server is
>>> happy.
>>> Can it be somehow related to this attack on wp-admin/install.php? i dont
>>> belive that this kind of change has something common with install script,
>>> but maybe i dont know wordpress core very good. Or maybe this attacker
>>> when
>>> saw that wp-login.php and wp-admin/index.php are secured started new way
>>> to
>>> attack? )or he or she started this long time ago but htaccess prevented
>>> from this)? all ip's from log are outside of Poland, but my regular
>>> visitors are almost only from Poland
>>> 
>>> 
>>> --
>>> (en) regards / (pl) pozdrawiam
>>> Konrad Karpieszuk
>>> http://tradematik.pl wtyczka do WordPressa do tworzenia sklepów dla
>>> klientów z Polski
>>> 
>>> 
>>> 
>>> On Wed, Oct 9, 2013 at 8:55 AM, Bryan Petty <bryan at ibaku.net> wrote:
>>> 
>>> On Wed, Oct 9, 2013 at 12:39 AM, Konrad Karpieszuk
>>>> <kkarpieszuk at gmail.com> wrote:
>>>> 
>>>>> two things:
>>>>> 
>>>>> 1. my website is not so popular that in one second 20 person try to
>>>> connect
>>>> 
>>>>> 
>>>>> 2. as you can see in log, /wp-admin/install.php is added not always to
>>>> main
>>>> 
>>>>> domain but sometimes to single post urls (ie
>>>>> 
>>>>> /2013/10/wdrozenie-**zakupionego-szablonu-**
>>>>> wordpress/wp-admin/install.php
>>>>> ) This is not url which somebody type in address bar without reason
>>>> 
>>>> It's actually fairly likely that in the event that your DB has dropped
>>>> as Mika was suggesting, that one of your plugins or server
>>>> configuration was causing a redirect loop back to install.php itself
>>>> as well.
>>>> 
>>>> Most hack attempts don't intentionally claim a user agent as
>>>> "Feedfetcher-Google" (which was also seeing that install.php redirect
>>>> loop).
>>>> 
>>>> --
>>>> Regards,
>>>> Bryan Petty
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