The Ramnit worm, known by researchers for its use of somewhat old-school malicious techniques, has now changed some of its tactics and morphed into financial malware. Ramnit seems to be acting like a fairly standard piece of financial malware, with a man-in-the-middle Web injection module, which allows the malware to invisibly modify client-side Web pages and transactional details. As of now, researchers at Trusteer say they have no way of determining whether Ramnit has actually changed or if it is just being used as a platform to commit financial fraud.
Source: https://threatpost.com/ramnit-worm-evolves-financial-malware-082311/75573/