Stop WordPress Malware from Coming Back

Deleting a malicious file does not stop a WordPress infection if something is still restoring it. When the same malware returns, the key question is: what is writing, copying, downloading, or activating it again?

Stop WordPress Malware from Coming Back is a practical guide to investigating recurring WordPress malware. Learn how to preserve evidence of a returning infection, trace it to its source, remove the mechanism that restores it, and verify that the cleanup holds.

• Trace a fake plugin to its hidden backup copy and automatically loaded MU-plugin restorer.
• Investigate an encoded hosting cron job that runs every minute and can restore malware.
• Check PHP processes and early PHP configuration, including .user.ini and auto_prepend_file.
• Look for injected theme code, sibling-site infections, deployment or backup tools, and retained account access.
• Record file paths, hashes, timestamps, schedules, and related activity before removing evidence.
• Remove the writer and its source before cleaning the visible malware, then retest the original trigger through the recurrence window.

The guide includes two detailed case investigations, additional real-world examples, five annotated figures, and practical PHP and command examples. It explains how a hidden source, MU-plugin loader, and scheduled task can work together—and why repeatedly deleting the returning file leaves the cause untouched.

For developers, freelancers, and site owners handling reinfected WordPress websites, this book provides a focused method for finding the restoration path and checking that it is gone.