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New Balada Injector campaign infects 6,700 WordPress sites

Last updated on 15 January, 2024 by Ravi Gupta

Leveraging pop-up plugins in WordPress for promoting special deals, exclusive discounts, or time-sensitive offers, websites are driving sales or expanding their subscriber base.

If you operate a WordPress site, chances are you've developed a lasting friendship with this daily ally.

There are many WP pop-up plugins out there. Each utilizing a different approach to target and re-target potential subscribers.

On the whole, pop-ups witness a positive rating, until they are updated and secured.

Balada Injector Campaign

In a recent targeted campaign initiated in mid-December, over 6,700 WordPress websites employing an outdated version of the Popup Builder plugin have fallen victim to the Balada Injector malware.

Researchers at Dr. Web found a big attack using known problems in WordPress themes and add-ons. They uncovered Balada Injector, a large operation since 2017, which hacked over 17,000 WordPress sites.

The attacks involve adding a backdoor that sends visitors to fake support pages, lottery sites, and push notification scams.

As an example, the new Balada Injector campaign started on December 13, 2023, just two days after WP Scan found a problem called CVE-2023-6000 in Popup Builder versions 4.2.3 and older. This problem is related to cross-site scripting (XSS).

And the concern is that over 200,000 websites have reportedly been using Popup Builder for marketing and re-marketing purposes.

Sucuri, a website security company, found that the Balada Injector swiftly took advantage of a vulnerability in Popup Builder.

First, the attack exploited the "sgpbWillOpen" event, inserting malicious JavaScript into the site's database when the popup triggered.

Attackers later used an alternate method, altering the "wp-blog-header.php" file to insert the same harmful JavaScript backdoor.

They then identified admin-related cookies to load various scripts, disguising the main backdoor as a plugin named 'wp-felody.php.'

Researchers found that once a website is breached, the infection process doesn't stop.

Currently, 6,700 websites have been compromised in the Balada Injector campaign. To protect your WordPress site from Balada injection attacks, make sure to update your themes and plugins to the latest versions.

Also, keep the number of active plugins as low as possible to reduce the risk of automated attacks.

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Ravi Gupta

Co-Founder & CEO at ravi-gupta.com

I'm Ravi Gupta, the founder of ravi-gupta.com. Here, I teach beginners to Get More Traffic More Customers More Revenue With Digital Marketing Join Our Newsletter

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3 Comments

Kelly

Jun 6, 2019 at 9:48 pm

I have installed and activated the plug-in, put it in the side bar and logged in to FB (choosing my nominated page) however none of the Review & Slider Options came up, only the Facebook details, Title, Pagination, Characters before ‘ read more’ link, Widget Width etc.

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WPBeginner Support

Jun 6, 2019 at 9:48 pm

I have installed and activated the plug-in, put it in the side bar and logged in to FB (choosing my nominated page) however none of the Review & Slider Options came up, only the Facebook details, Title, Pagination, Characters before ‘ read more’ link, Widget Width etc.

Reply

ashika gowde

May 21, 2018 at 7:53 am

Today I learned new technic from this Blog. Thanks.

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