Attackers Gained Access to the Systems of the National Games of China

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China has recently had its own national sporting event: the National Games of China began on September 15, 2021, in the Chinese city of Shaanxi. This is a comparable event to the Olympics, however, it only features athletes from China. The National Games of the People’s Republic of China, also known as the All-China Games, are China’s biggest national sporting event. It is typically held every four years. 

David Álvarez, an Avast security researcher, discovered a malware sample with a peculiar file extension in early September and started to examine where it came from. Following that, he discovered a report submitted to VirusTotal by the National Games IT team on an attack against a server associated with the Games.

The data suggests that the attackers acquired initial code execution on September 3, 2021, about 10:00AM local time, and deployed their first reverse shell executing scripts called runscript.lua. Researchers believe this occurred as a result of an arbitrary file-read vulnerability targeting either route .lua which, according to the API (Application User Interface) extracted from various JavaScript files, is a LUA script containing a lot of functionality ranging from login authentication to file manipulation or index.lua in combination with index.lua?a=upload API that was not used by anyone else in the rest of the network log. It’s also worth noticing that runscript.lua was not included in the report or among the files uploaded by the attacker.