Cybercriminals are targeting Alibaba Elastic Computing Service (ECS) instances, disabling certain security features to further their cryptomining goals. Alibaba offers a few unique options that make it a highly attractive target for attackers, researchers noted.
While disabling security isn’t a new tactic, in this case the attackers are using a small piece of specific code in the cryptomining malware to create new firewall rules, instructing security filters to drop incoming packets from IP ranges belonging to internal Alibaba zones and regions.
Once it’s past the security feature, the malware then goes on to install the off-the-shelf XMRig cryptominer, which mines for Monero.