Fake Parameters Conceal a Backdoor
Denis Sinegubko We found this backdoor in the middle of the logrss.php file that defined the JDocumentRendererRSS class. …function jregisterClass() { // merge arrays $info = array_merge($_REQUEST,$_COOKIE); //…
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Website Malware Infections
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How to Prevent Cross-Site Contamination for Beginners
Josh Hammer What is Cross-Site Contamination? Cross-site contamination happens when a hacked site infects other sites on a shared server. Think of it as your kid in…
Spam Injector Disguised as License Key in WordPress Website
Moe O Here at Sucuri, we clean WordPress websites every day. There are various types of common malware, but when we stumble upon a different scenario, our…
Spam Injector Disguised as a License Key
A client reported some weird spam URLs injected on their WordPress website and after an investigation, it turned out that the hacker was hiding the…
My Website Was Hacked on Christmas Eve
Val Vesa Christmas is a wonderful time to spend with family and friends. A lot of kids look forward to opening their presents under the Christmas tree,…
Array String Obfuscation
Luke Leal We continue to see an increase in the number of these PHP injections that use multiple obfuscation methods to evade detection, but lately one method…
Side Effects of the Site_url Hack
We\’ve been cleaning many sites infected by the so-called site_url hack–the result of the WP GDPR Compliance plugin vulnerability. The sites are broken because their…
A Scam-Free Cyber Monday for Online Businesses
Juliana Lewis Every year we see an increase in website attacks during the holidays. While business owners see their sales go up due to promotional Black Friday…
Fake Wp.org/jquery.js
There is a long-lasting malware campaign (dating back to at least 2016) that injects fake jQuery scripts: <script type=”text/javascript” src=”hxxps://www.XX[X]wp[.]org/jquery.js”></script> Where XX[X] are 2 or…
Backdoor Uses Paste Site to Host Payload
Bruno Zanelato Finding backdoors is one of the biggest challenges of a website security analyst, as backdoors are designed to be hidden in case the malware is found…
Multi-Vector WordPress Infection from Examhome
This September, we’ve been seeing a massive infection wave that injects malicious JavaScript code into .js, .php files and the WordPress database.> The script looks…