Troj/Agent-GJJ is a Trojan for the Windows platform.
Troj/Agent-GJJ has functionality to communicate with a remote computer via HTTP.
When first executed the Trojan displays an animated image of a Christmas tree.
Troj/Agent-GJJ copies itself to the <Temp>\1Happynew.exe and <Temp>\Happynew.exe and creates the file <System>\sdmgr32.exe.
The file sdmgr32.exe is setup as a service of name "Network Performance Alerts".