The name is derived from text string "TMSSYS_TRXAPP", found in the code

Written in Delphi

Server:
dropped files:
c:\WINDOWS\SYSTEM\mssys32.exe   Size: 119.040 bytes 
c:\WINDOWS\SYSTEM\outexp.386 

port: 1200 UDP

startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "mssys32" 
c:\windows\win.ini, [windows] "run" 

registry added:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Network