New Polymorphic Attack Enables Malicious Chrome Extensions to Impersonate Password Managers and Banking Apps

Researchers at SquareX Labs have uncovered a sophisticated “polymorphic” attack targeting Google Chrome extensions, allowing malicious extensions to seamlessly morph into trusted ones, such as password managers, cryptocurrency wallets, and banking apps. The attack exploits Chrome’s ‘chrome.management’ API to gain insights into the user’s installed extensions and then impersonates them to steal sensitive information. 

The attack begins when an unsuspecting user installs a seemingly legitimate extension—such as an AI-powered marketing tool—through the Chrome Web Store. Once installed, the extension gains access to the list of other installed extensions using the ‘chrome.management’ API. If this permission is not granted, attackers can use a stealthier approach, injecting malicious code into web pages to detect installed extensions based on unique resource requests. 

This information is then sent to an attacker-controlled server, which determines whether a targeted extension is present.

If a high-value target, such as a password manager, is detected, the malicious extension initiates the impersonation process. SquareX demonstrated how attackers could disable a legitimate extension, like 1Password, using the ‘chrome.management’ API or by manipulating the user interface to hide it. Simultaneously, the malicious extension changes its name, icon, and behavior to mimic the real one. 

To lure victims into entering their credentials, attackers dep

[…]
Content was cut in order to protect the source.Please visit the source for the rest of the article.