Malware Remediation & Core System Recovery

The Challenge

Following a malware infection, the website was flagged and taken offline as a safety measure. Upon investigation, the site was suffering from a “Fatal Error,” making it impossible to load the frontend or backend.

The Critical Issue: The essential WordPress core file, wp-blog-header.php, had been deleted or corrupted by the malware.
The Impact: Without this file, the WordPress environment cannot initiate, resulting in a total application failure and a “White Screen of Death.”

The Solution

I followed a high-security restoration protocol to bring the site back safely:

Forensic Diagnosis: I analyzed the server’s error_log which pinpointed the exact dependency failure: failed to open stream: No such file or directory.
Clean Core Restoration: Instead of just “patching” the site, I sourced a clean, unmodified package from the official WordPress repository to ensure no residual malicious code was present.
Surgical File Replacement: I manually restored the missing wp-blog-header.php via SFTP and performed a structural audit of other critical root files (index.php, wp-load.php) to ensure system integrity.
Security Verification: After restoration, I verified the site’s stability across multiple browsers to confirm that the template loading process was fully operational.

Tech Stack & Tools

Security Tools: Malware Scanners, Server Error Logs.
Backend: PHP Environment Repair & Core File Integrity.
Infrastructure: SFTP (Secure File Transfer Protocol).
Environment: WordPress Core Architecture.

Key Features Developed

Root Cause Analysis: Fast identification of the missing core dependency.
Clean File Sourcing: Using official repositories to prevent re-infection.
System Integrity Audit: Checking all critical system files for signs of tampering.
Post-Infection Testing: Ensuring all content and styles load correctly after the core fix.