Download Linux Malware Detect (LMD)
tar -xvf maldetect-current.tar.gz
Remove the LMD Archive
Run the installer LMD
cd maldetect- * ./install.sh… this will download the latest hash registry databases, now to configure
Configure Linux Malware DetectUsing nano…
Set up Email Alerts
# [ EMAIL ALERTS ] ## # The default email alert toggle # [0 = disabled, 1 = enabled] email_alert=0 # The subject line for email alerts email_subj="maldet alert from $(hostname)" # The destination addresses for email alerts # [ values are comma (,) spaced ] email_addr="firstname.lastname@example.org"Swap the alert toggle to 1, adjust the subject line if desired, add in your email address.
Daily Malware ScansWhen installed LMD (Linux Malware Detect) adds a cron job to the daily folder:
/etc/cron.daily/maldetThis cron job will update the malware registry it initially downloaded including any new malware threats and also scan all home directories on the server. If anything is found you will get an email about it telling you the path to the offending file.
Dealing With Malware FilesOnce you get a file hit on malware you can open the file and clean the malware code out. Then progress to how it got in in the first place – software patching, updating passwords etc You can also opt to have LMD quarantine any file it finds – this is done back in the config file under the Email Alert section:
# [ QUARANTINE OPTIONS ] ## # The default quarantine action for malware hits # [0 = alert only, 1 = move to quarantine & alert] quar_hits=0 # Try to clean string based malware injections # [NOTE: quar_hits=1 required] # [0 = disabled, 1 = clean] quar_clean=1The default is just to alert, but you can opt to remove the file from the filing system and have LMD also try and remove the malware code – then you just need to inspect and restore the file.
Manual Malware ScansOf course you can also run manual scans at will on all files or selectively:
maldet -a /home/homedir/public_html/Or all home directories using a wildcard – ?:
maldet -a /home/?/public_html/
Further OptionsCheck further usage with:
Using ClamAV Binary as Scanner Engine on cPanel/WHM ServerYou can use the ClamAV as the scanner engine which speeds up the scanning process, if using cPanel as the server you can install ClamAv in WHM under Manager Plugins – once installed the actual binary is filed under :
But LMD is looking for it here:
Make a soft link alias:
ln -s /usr/local/cpanel/3rdparty/bin/clamscan /usr/bin/clamscan
Now the scan time will be up to 4 times faster (other non-cpanel servers will have the binary in the right place – (well, maybe)