Detecting Hidden Backdoors in PHP OPcache

In this article, we will be looking at the strategies to detect and analyze malware hidden inside an OPcache file. If you haven’t read our previous article about hiding a binary webshell inside a PHP7 OPcache file, we suggest reading it before moving on.  ...

Binary Webshell Through OPcache in PHP 7

Update: A follow-up article was published on the detection and the reverse-engineering of those binary web shells. In this article, we will be looking at a new exploitation technique using the default OPcache engine from PHP 7.  Using this attack vector, we can bypass...
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