Based on source of  Aqua

Written in Visual Basic

Released in August 2003

Server:
c:\WINDOWS\SYSTEM\Powerdll.exe 

size: 110.592 bytes 

startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "PowerProfile" 
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "Temporary 

added:
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\windows