Chinese state-backed advanced persistent threat (APT) group Antlion has been targeting financial institutions in Taiwan in a persistent campaign over the course of at least 18 months. The attackers deployed a custom backdoor we have called xPack on compromised systems, which gave them extensive access to victim machines. The backdoor allowed the attackers to run WMI commands remotely, while there is also evidence that they leveraged EternalBlue exploits in the backdoor.   Read more about it here.