MetaMaskSecurity Analysis

Extension intercepts network traffic and sends data externally — potential man-in-the-middle behavior.

Extension reads clipboard and communicates externally — potential credential or crypto address theft.

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

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

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

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

Dynamically creates script elements, potentially loading external malicious code.

Injects and executes scripts in web pages programmatically.

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

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

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

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

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

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

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

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

Decodes base64 data, commonly used to hide malicious payloads.

Uses XMLHttpRequest to make network calls.

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

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

Line exceeds 5000 characters (entropy: 5.378275097132972)

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

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

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

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

String with entropy 5.51 bits — may be encoded/encrypted data

Extension accepts messages from 2 external pattern(s). Verify these are trusted origins.

background-2.js

background-5.js

common-10.js

common-11.js

common-12.js

common-15.js

common-8.js

common-9.js

common-9.js

scripts/policy-load.js

scripts/runtime-lavamoat.js

ui-2.js