Unwanted Ads via Baidu Links

Unwanted Ads via Baidu Links

The malware attack that began as an installation of malicious Injectbody/Injectscr WordPress plugins back in February has evolved since then.

Some of the changes were documented asUpdates at the bottom of the original blog post, however, every week we see minor modifications in the way they obfuscate the scripts or the files they inject them into.

Encrypted WordPress JavaScript Files

At this moment, the most common injection targets are core WordPress JavaScript files:

wp-includes/js/jquery/jquery-migrate.min.js
wp-includes/js/jquery/jquery.js
wp-includes/js/wp-embed.min.js

Hackers add the malicious code and then obfuscate the entire file contents along with the original legitimate code so that the only way to clean the files without breaking the site functionality is to replace them with their original clean copies.

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Via Sucuri.net

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