In this immersive training scenario, participants are tasked with defending a fictional telecom company under siege by the notorious APT41, known as RedEcho. This advanced persistent threat group, originating from China, has launched a multi-vector attack, leveraging their expertise in supply chain compromises and ransomware to infiltrate the company's network. Your mission is to detect, analyze, and mitigate the threats as they unfold in a five-step attack sequence. Can you thwart RedEcho's espionage and financial motives before critical data is exfiltrated?