🛡️Install Linux Malware Detect (LMD) – maldet

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Purpose:
Linux Malware Detect (LMD), or maldet, is a malware scanner for Linux, designed to detect and clean infected files on shared hosting environments.

📥 Step 1: Download and Install

Open SSH and log in as root, then run the following:

rm -fv maldetect-current.tar.gz
wget http://www.rfxn.com/downloads/maldetect-current.tar.gz
tar -zxf maldetect-current.tar.gz
cd maldetect-*
./install.sh

This will install maldet to /usr/local/maldetect.

⚙️ Step 2: Configuration

Edit the configuration file:

nano /usr/local/maldetect/conf.maldet

Suggested options to review/update:

email_alert=1
email_addr="[email protected]"
quar_hits=1
quar_clean=1

Enable alerts, quarantine, and auto-cleaning as needed.

Save and exit: CTRL+X, then Y, then Enter.

🧪 Step 3: Run a Scan

Scan All:

maldet -a /

Background Scan on Specific Directory:

maldet -b -r /home/username/

The -b flag runs in background, and -r enables recursive scanning.

🔄 Optional: Set Up Cron for Daily Scans

Create a cron job:

crontab -e

Add:

0 3 * * * /usr/local/maldetect/maldet -b -r /home >> /var/log/maldet-daily.log 2>&1

✅ Final Notes

  • Use with ClamAV for enhanced scanning: yum install clamav or dnf install clamav (on AlmaLinux 8/9).
  • Logs: /usr/local/maldetect/event_log
  • Quarantine: /usr/local/maldetect/quarantine/
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