Troj/Agent-GPA is a backdoor Trojan which allows a remote intruder to gain access and control over the computer.
When first run Troj/Agent-GPA copies itself to <System>\rbnynkctv.exe.
The following registry entry is created to run rbnynkctv.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
rbnynkctv
<System>\rbnynkctv.exe
The file rbnynkctv.exe is registered as a new system driver service named "bipu04aduaa14ci", with a display name of "Print Spooler Service" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\bipu04aduaa14ci