Final answer:
The Token Injector feature in Cobalt Strike can be used to bypass 2-factor authentication by injecting authentication tokens to mimic a legitimately authenticated user.
Step-by-step explanation:
The feature in Cobalt Strike that can be used to bypass 2-factor authentication (2FA) is known as the Token Injector. This tool can be leveraged by attackers to inject authentication tokens into a session, allowing them to impersonate a legitimately authenticated user, effectively sidestepping the 2FA process. It's important to note that discussing the misuse of such features for illegal activities is unethical and potentially illegal. The intention here is to provide an educational response to the question posed.