Unmask Parasites - Check your web pages for hidden links, iframes, malicious scripts, unauthorized redirects and other signs of security problems.
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Tattoo Ideas For … Spammers

21 Jul 11   Filed in General with 1 Comment

Do you know how many people use Google Images to see a new tattoo of some celebrity or to search for tattoo ideas? What about using image search for hairstyle lookups? Or to find new wallpapers for your computer desktop? I’d say millions do it. That’s why these niches are particularly interesting for “black hats”.
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Tweet Week: March 8-14, 2010

14 Mar 10   Filed in Tweet Week with Comments Off on Tweet Week: March 8-14, 2010

Selected short messages and links you might have missed if you don’t follow me on Twitter.

Security discussions, hidden links in WordPress, new vulnerabilities, StopBadware wants bad URLs, etc. … »»

Web of Koobface

27 Feb 10   Filed in Website exploits with 5 Comments

This research is provoked by the following blogpost of Joshua Long where he lists domain names used by Koobface. Generally, I focus on website hacks and don’t research malware distributed via email spam and social networks (Koobface is an anagram of Facebook). However that list showed me how legitimate hacked sites were integrated into Koobface scheme and I decided to try to investigate how the whole thing worked.

Joshua’s list was a good starting point. I saw multiple rogue blogspot blogs that followed the same pattern and multiple compromised sites where those blogs redirected to. For some reason, most of the functionality of the malicious pages on the hacked sites is implemented as a client-side JavaScript, so I could easily retrieve and analyze those scripts. They provided me with very interesting details about the internals of the attack: sites it expected as referrers and usage of infected PCs. As a result I came up to the following scheme:
Koobface attack flow and other details »»