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, making it an incredibly popular scripting language — which is likely why attackers are creating malware to target environments which leverage it. During a recent investigation, our team stumbled across […]

“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 scanners. The hexadecimal/decimal obfuscation is clear to see when viewing the file’s PHP code. For instance, this section of the PHP code is obfuscated using this method: if ($_GET[“x72145156x61155x65”] == […]

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 malicious behavior we’ve seen recently on compromised websites. Obfuscated PHP Backdoor Discovered by our Remediation team, […]

We recently found a simple malicious script leveraging Magento’s internal functions to create a new admin user with the admin role “Inchoo” ⁠— probably referring to a Croatian Magento consulting company. The script is simple but very effective and can easily be overlooked as another Magento file without closer inspection. It’s based on a sample […]