Skylight Cyber released almost full list of MAC addresses used by the hacking group behind Operation ShadowHammer to target ASUS customers with a backdoored version of the ASUS Live Update Utility. The team was able to extract the MAC addresses targeted in the attack by reverse engineering the offline tool released by Kaspersky. The plain text list of 583 MACs can be found HERE and HERE. Users can also check if their computers have been targeted by the attack with the help of the offline checkers provided by the company or online using the web checker.
Source: https://www.bleepingcomputer.com/news/security/mac-addresses-targeted-by-the-asus-supply-chain-attack-now-available/