Website Security News
Attackers are always trying to come up with new ways to evade detection from the wide range of security controls available for web applications. This also extends to malware like PHP shells, which are typically left on compromised websites as a backdoor to maintain unauthorized…
Read More about Obfuscation Techniques in MARIJUANA Shell “Bypass”
In a previous post, I discussed how attackers can trick website owners into installing malware onto a website — granting the attacker the same unauthorized access as if they had…
Read More about “Free” Symchanger Malware Tricks Users Into Installing Backdoor
Sometimes, website owners no longer want to own a domain name and they allow it to expire without attempting to renew it. This happens all the time and is totally…
Often when a website is injected with SEO spam, the owner is completely unaware of the issue until they begin to receive warnings from search engines or blacklists. This is…
Read More about Hidden SEO Spam Link Injections on WordPress Sites
According to W3Tech’s data, PrestaShop is among the most popular CMS choices for existing ecommerce websites, so it should come as no surprise that malware has been created to specifically…
Read More about PrestaShop SuperAdmin Injector and Login Stealer
We have already shared examples of many kinds of malware that rely on an external gateway to receive or return data, such as different malware payloads. During a recent investigation,…
During a routine investigation, we found yet another web skimmer that pretends to be related to Sucuri. One of our Remediation Analysts, Liam Smith, found the following code injected into…
Read More about Another Credit Card Stealer That Pretends to Be Sucuri
We sometimes find malware code injections that contain strange code comments, which are normally used by programmers to annotate a section of code — for example, a short description of…
We’ve seen a wider variety of PHP web shells being used by attackers this year — including a number of shells that have been significantly updated in an attempt to…
Read More about ALFA TEaM Shell ~ v4.1-Tesla: A Feature Update Analysis
During malware analysis, we regularly find variations of this injected script on various compromised websites: . The variable “_0x446d” assigns hex encoded strings in different positions in the array. If…
Read More about Legacy Mauthtoken Malware Continues to Redirect Mobile Users
This summer, MalwareBytes researcher Jérôme Segura wrote an article about how criminals use image files (.ico) to hide JavaScript credit card stealers on compromised e-commerce sites. In a tweet, Affable…
Read More about CSS-JS Steganography in Fake Flash Player Update Malware
