In a high-stakes cybersecurity operation, a Fortune 500 company falls victim to a sophisticated ransomware attack by the notorious APT group, Evil Corp. As the company's data is held hostage, your team is tasked with negotiating with the attackers while simultaneously reverse-engineering the malware to identify a vulnerability in its encryption. The initial infection vector is traced back to a cunning drive-by download, demonstrating Evil Corp's technical prowess. Can you outsmart the attackers, recover the data, and trace the attack back to its source?