Using assert() to Execute Malware in PHP 7 Environments
Krasimir Konov Initially released December 2015, PHP 7 introduced a multitude of performance and security improvements. Approximately 43.7% of websites across the web currently use PHP 7.x,…
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Website Malware Infections
865 posts
COVID-19 Chloroquine Pharmaspam
Luke Leal A recent SiteCheck scan of an organization’s website showed an interesting pharmacy spam injection targeting COVID-19-related pages of websites. The HTML that was flagged by…
CDN-Filestore Credit Card Stealer for Magento
During a website remediation, we recently discovered a new version of a Magento credit card stealer which sends all compromised data to the malicious domain…
Smoker Backdoor: Evasion Techniques in Webshell Backdoors
“Smoker Backdoor” is a PHP webshell backdoor that uses hexadecimal and decimal obfuscation in conjunction with the PHP function goto to evade detection from malware…
String Concatenation: Obfuscation Techniques
While string concatenation has many valuable applications in development — such as making code more efficient or functions more effective — it is also a…
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…
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…
Vulnerabilities Digest: July 2020
John Castro Relevant Plugins and Vulnerabilities: Plugin Vulnerability Patched Version Installs Asset CleanUp: Page Speed Authenticated XSS 1.4.6.7 80000 Quiz And Survey Master Authenticated Stored XSS 7.0.0…
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…
Reverse String WooCommerce WordPress Credit Card Swiper
Ben Martin 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…
Skimmers in Images & GitHub Repos
Denis Sinegubko 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.…