Which technique generates random URLs for malware to communicate with command and control servers?

The technique that generates random URLs for malware communication with command and control servers is Domain Generation Algorithm (DGA). This method is particularly insidious because it allows malware to avoid detection and maintain connectivity with its control servers by frequently changing the domain names it uses. DGA algorithms create a list of potential domain names on a regular basis, and during each phase of communication, the malware tries to connect to the generated domains, which makes it challenging for security solutions to block them effectively.

The effectiveness of this technique lies in its randomness and unpredictability, as security measures often rely on known bad indicators (like specific domain names). By continuously rotating the domains, malware can maintain a presence on the network, evade tracking, and make it difficult for cybersecurity professionals to shut down their operations.

In contrast, the other techniques mentioned do not involve generating random URLs for communication. URL Filtering involves blocking or allowing specific URLs based on a predefined list, which does not pertain to random generation. Redirection usually aims to send traffic to a different destination rather than creating new domains, and Dynamic IP Allocation deals with the assignment of IP addresses rather than domain names. Thus, DGA stands out as the precise method in question.