Understanding Google’s Blacklist – Cleaning Your Hacked Website and Removing From Blacklist

Today we found an interesting case where Google was blacklisting a client’s site but not sharing the reason why. The fact they were sharing very little info should not be new, but what we found as we dove a little deeper should be. The idea is to provide you webmasters with the required insight to understand what is going on, and how to troubleshoot things when your website is blacklisted.

Get Your Bearing

While investigating the website, we found that some Google shortened URLs were being loaded and redirecting to http://bls.pw/. Two of the goo.gl links were pointing to Wikipedia images, their icon to be specific, and one was redirecting to http://bls.pw/ shortener.

goo.gl/9yBTe - http://bits.wikimedia.org/favicon/wikipedia.ico
goo.gl/hNVXP - http://bits.wikimedia.org/favicon/wikipedia.ico?2x2
goo.gl/24vi1 - http://bls.pw/

A quick search for this last URL took us to /wp-content/themes/Site’sTheme/css/iefix.sct. As malware writers like to do, it was trying to trick us into believing it was good code. In this case, the Sizzle CSS Selector Engine code (Real code here) was the target:

Sucuri  Sizzle CSS Selector Engine Modified III

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Dealing with WordPress Malware

A few months back I contributed to a post with Smashing Magazine on the top 4 WordPress Infections, it was released yesterday, and it couldn’t have been at a better time. If any one attended WordCamp Las Vegas you might even find some similarities. Fortunately in the process of preparing for the event and working with the team, we were able to compile a bit more information expanding on the things we originally discussed in the last post. It’s perfect timing for a number of reasons, and will complement this post very nicely.

WordPress Malware
The idea of this post, like many in the past, is to outline and discuss this past weekend’s presentation. In the process, hopefully you take something away. Unfortunately, the presentation was capped off with a live attack and hack, and I won’t be able to include that in this post, but I promise it’s coming.

**Note: If you plan to be at WordCamp Philadelphia 2012 you might be in for some treats, just saying. And if you don’t have it on the calendar, you should.

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Fake jQuery Website Serving Redirection Malware

This just in, hot off the press, careful with the jQuery libraries you’re using on your websites.

We received word from @chris_olbekson via Twitter about some hacks being reported on the WordPress forums:

chris_olbekson

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Conditional Redirect Malware Decoded – Eval base64_decode Example

I have this beautiful website and now there’s all this garbled code across all of my PHP files. What’s it do, and how did it get there?

This is a quick post to show you some encoded crud that can attack your site, and do some pretty bad stuff.

Encoded Payload – Eval( base64_decode)

Generally speaking, we see this type of payload dropped into PHP, HTML, and JavaScript files. They are typically dropped into an environment through a known vulnerability in outdated software. This isn’t the only entry point, but definitely the one we see the most.

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