Summary
Dalian stays resident in memory and infects EXE files when they are listed with the DIR command.
Dalian contains this text:
Gene_1991_in DUT (Dalian China)
It randomly displays 'Gene !' on screen. Otherwise the virus just
spreads.
This virus was distributed on a game CD produced in China in July
1997.
[Analysis: Mikko Hypponen, F-Secure]