WordPress administrators are being emailed fake WordPress security advisories for a fictitious vulnerability tracked as CVE-2023-45124 to infect sites with a malicious plugin.
Fake WordPress update
The emails pretend to be from WordPress, warning that a new critical remote code execution (RCE) flaw in the platform was detected on the admin's site, urging them to download and install a plugin that allegedly addresses the security issue.
Phishing email impersonating a WordPress security advisorySource: PatchStack
Clicking on the email's 'Download Plugin' button takes the victim to a fake landing page at 'en-gb-wordpress[.]org' that looks identical to the legitimate 'wordpress.com' site.
Fake WordPress landing pageSource: PatchStack
The entry for the fake plugin shows a likely inflated download count of 500,000, along with multiple phony user reviews elaborating on how the patch restored their compromised site and helped them thwart hacker attacks.
The vast majority of the user reviews are five-star reviews, but four-, three-, and one-star reviews are thrown in to make it appear more realistic.
Fake user reviewsSource: Wordfence
Upon installation, the plugin creates a hidden admin user named 'wpsecuritypatch' and sends information about the victim to the attackers' command and control server (C2) at 'wpgate[.]zip.'
Next, the plugin downloads a base64-encoded backdoor payload from the C2 and saves it as 'wp-autoload.php' in the website's webroot.
The backdoor features file management cap ..
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