Security researcher Zoltan Balazs has developed a remote-controlled piece of malware that functions as a browser extension. The researcher plans to release the malware’s source code onduring a presentation at the Hacker Halted security conference in Miami next Tuesday. The Firefox version can steal passwords from the browser’s built-in password manager, download and execute files (only on Windows), modify the content of Web pages in the same way that banking Trojans modify online banking websites to hide rogue transaction records.
Source: https://thehackernews.com/2012/10/remotely-controlled-malware-as-browser.html