Hackers hijacked Microsoft’s trust model to make their malware harder to detectHackers
By Wired.com

EVERY SOFTWARE SUPPLY chain attack, in which hackers corrupt a legitimate application to push out their malware to hundreds or potentially thousands of victims, represents a disturbing new outbreak of a cybersecurity scourge. But when that supply chain attack is pulled off by a mysterious group of hackers, abusing a Microsoft trusted software model to make their malware pose as legitimate, it represents a dangerous and potentially new adversary worth watching.
Beyond the usual disturbing breach of trust in legitimate software that occurs in every software supply chain, Symantec says, the hackers also managed to get their malicious code—a backdoor known as Korplug or PlugX and commonly used by Chinese hackers—digitally signed by Microsoft. The signature, which Microsoft typically uses to designate trusted code, made the malware far harder to detect.
Read more at : https://www.wired.com/story/carderbee-china-hong-kong-supply-chain-attack/