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Encryption

PinnacleCart Server-Side Skimmer & Backdoor

May 15, 2020Luke Leal

WordPress Malware Collects Sensitive WooCommerce Data

During a recent investigation, our team found malicious code that reveals how attackers are performing reconnaissance to identify if sites are actively using WooCommerce in a compromised hosting environment. These compromised websites are victims of the ongoing wave of exploits against vulnerable WordPress plugins. Why…

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April 6, 2020Cesar Anjos

Analyzing & Decrypting L4NC34’s Simple Ransomware

We’re constantly seeing news about computers being infected by ransomware, but very little do we hear about it affecting websites. That being said, the impact can be serious if the…

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Hacked Website Threat Report 2019

January 28, 2020Rianna MacLeod

Hacked Website Threat Report – 2019

The threat landscape for website owners is constantly shifting on a regular basis — and it’s becoming increasingly more complex. As attackers continue to develop tools and find new vulnerabilities…

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Down the Malware Rabbit Hole Part 2

November 18, 2019Cesar Anjos

Down the Malware Rabbit Hole: Part II

In our last post in this series, we took a look at a code snippet that had been encoded in a very specific way — and hidden 91 layers deep….

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Mixed Content Chrome

November 14, 2019Peter Kankowski

Mixed Content Warnings in Google Chrome

Migrating your website to HTTPS may seem like a simple task. Get the TLS/SSL certificate, install it on your web server, and you’re done. The real pain for large projects,…

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August 5, 2019Krasimir Konov

Malicious Plugin Used to Encrypt WordPress Posts

During a recent cleanup, we found an interesting malicious WordPress plugin, “WP Security”, that was being used to encrypt blog post content. The website owner complained of a newly installed…

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Labs Note

July 27, 2019Luke Leal

“Loader for Secured Files” and arrayed b374k shell encoding

This file (33×77.php) was detected in the document root of a website during a website cleanup for a client. It demonstrates how hackers sometimes use comments or other text within…

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PHP Backdoor Evaluates XOR Encrypted Requests

May 29, 2019Luke Leal

PHP Backdoor Evaluates XOR Encrypted Requests

In the past, we’ve mentioned how the PHP XOR bitwise operator (represented by the caret ^)  can be used to encrypt a malware’s source code. This operator makes it more…

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Labs Note

April 25, 2019Pedro Peixoto

Free Premium themes? There’s always a catch

OK, so we’ve all been there. We want something Premium, such as a paid version of an app or piece of software, but it would be great not having to…

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Safer Internet Day: Security vs. Convenience

February 5, 2019Alycia Mitchell

Safer Internet Day: Security vs. Convenience

It isn’t easy to be secure all the time — this is especially true if you are new to cybersecurity. A well-formed security plan takes deliberate effort at the very…

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Spam Injector Disguised as a License Key in a WordPress Website

January 29, 2019Moe O

Spam Injector Disguised as License Key in WordPress Website

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 research team likes to dig…

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