[NanHaiShu](https://attack.mitre.org/software/S0228) is a remote access tool and JScript backdoor used by [Leviathan](https://attack.mitre.org/groups/G0065). [NanHaiShu](https://attack.mitre.org/software/S0228) has been used to target government and private-sector organizations that have relations to the South China Sea dispute. (Citation: Proofpoint Leviathan Oct 2017) (Citation: fsecure NanHaiShu July 2016)