BackpackSecurity Analysis

Extension has access to all sites and captures keyboard input — behavior consistent with a keylogger.

Uses eval() to execute dynamic code, a common technique for obfuscation and code injection.

Listens for keyboard events, a common technique used by keyloggers.

Dynamically sets a script's src attribute to load external code at runtime.

Reads clipboard contents via the Clipboard API — can access copied passwords, crypto addresses, or sensitive data.

Creates functions from strings, similar to eval(), often used to hide malicious code.

Dynamically creates script elements, potentially loading external malicious code.

Uses eval() to execute dynamic code — a common vector for code injection.

Creates a function from a string (new Function()), similar to eval().

Object.defineProperty() called on window — can intercept and override built-in browser APIs.

JavaScript files are accessible to ALL websites. Any page can load and interact with these scripts, enabling web→extension attacks.

Content script runs at document_start in ALL frames on ALL URLs. This gives the extension deep access to every page load, including iframes.

Makes HTTP requests to external servers, may be used for data exfiltration.

Decodes base64 data, commonly used to hide malicious payloads.

Uses XMLHttpRequest to make network calls.

Modifies window.location to redirect the user, potentially to phishing or malicious pages.

Opens WebSocket connections, which can be used for persistent command-and-control channels.

Sends messages via Chrome runtime, could communicate with external services.

Dynamically creates iframe elements, which can be used to load external content or hide malicious UI.

Fetches external URL: https://staking.xnfts.dev/v1/backpack-validators-stats

JavaScript file could not be parsed and has high entropy. May contain obfuscated code.

Opens a WebSocket connection, which can be used for persistent C2 channels.

Line exceeds 5000 characters (entropy: 5.085291782384681)

This extension does not define a Content Security Policy. A CSP helps prevent XSS and code injection attacks.

Web-accessible resources use <all_urls> or wildcard patterns, exposing resources to every website.

Content script matches <all_urls>, executing on every website the user visits.

Encodes data to base64, may be used for data exfiltration.

Sets innerHTML directly, which can lead to XSS if used with untrusted data.

Reads or writes to localStorage, which may contain sensitive site data.

Creates a Web Worker, which runs code in a separate thread — can be used for background computation or crypto mining.

JavaScript file could not be parsed. Likely minified or bundled code.

injected.js

injected.js