PHP Binary Downloader

When possible, an attacker will want to avoid using specific functions in their PHP code that they know are more likely to be flagged by a scanner. Some examples of suspicious functions commonly detected include system and file_put_contents.
In this m… Continue reading PHP Binary Downloader

PHP Backdoor Obfuscated One Liner

In the past, I have explained how small one line PHP backdoors use obfuscation and strings of code in HTTP requests to pass attacker’s commands to backdoors. Today, I’ll highlight another similar injection example and describe some of the … Continue reading PHP Backdoor Obfuscated One Liner

SEO Hacktool: Sitemap Generator

An XML sitemap is an important part of a website’s SEO and exists to help search engine crawlers index new URLs on your website. For example, if a site has a large number of pages that were recently updated and the owner wants Google to index th… Continue reading SEO Hacktool: Sitemap Generator

Reverse String WooCommerce WordPress Credit Card Swiper

As 2020 continues to be the worst year in almost anybody’s lifetime, allow me to take this opportunity to stoke the fires of your existential dread even further. As a sequel to my last blog post earlier this year about the credit card swiper tha… Continue reading Reverse String WooCommerce WordPress Credit Card Swiper

Skimmers in Images & GitHub Repos

MalwareBytes recently shared some information about web skimmers that store malicious code inside real .ico files.
During a routine investigation, we detected a similar issue. Instead of targeting .ico files, however, attackers chose to inject content… Continue reading Skimmers in Images & GitHub Repos

Fake WordPress Plugin SiteSpeed Serves Malicious Ads & Backdoors

Fake WordPress plugins appear to be trending as an effective way of establishing a foothold on compromised websites.
During a recent investigation, we discovered a fake component which was masquerading as a legitimate plugin. Named SiteSpeed, it conta… Continue reading Fake WordPress Plugin SiteSpeed Serves Malicious Ads & Backdoors

Spox Phishing Kit Harvests Chase Bank Credentials

Phishing kits are the back end components to a phishing attack and are often designed to make it easier to deploy a phishing page.
These kits are typically bundled in compressed files, such as .zip archives, and contain the entire file infrastructure … Continue reading Spox Phishing Kit Harvests Chase Bank Credentials

Pirated WordPress Plugins Bundled with Backdoors

One widespread belief among webmasters is that attackers typically only compromise websites in a couple of ways: by exploiting vulnerabilities or stealing login credentials.
Although these are certainly two of the more common attack vectors, another m… Continue reading Pirated WordPress Plugins Bundled with Backdoors

Vulnerabilities Digest: June 2020

Highlights for June 2020

Cross site scripting is still the most common vulnerability in WordPress Plugins. Bad actors are taking advantage of the lack of restrictions in critical functions and issues surrounding user input data sanitization.
Massive … Continue reading Vulnerabilities Digest: June 2020