Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
Troj.orkfotos spreads through orkut.This trojan once installed sends system information through e-mail.It disables shut down of the system.When clicked on the link in orkut scrap book it disguises itself as msn messenger installer.
Killing the process "mstray.exe" and "msnmsg.exe".
1. Open Task Manager.
On Windows 95/98/ME, Press CTRL+ATL+DEL
On Windows NT/2000/XP, Press CTRL+ALT+DEL, Select the Task Manager or Right-Click on the task bar and click on "Task Manager"
2. Click on the Processes tab.
3. In the list of programs, click on "mstray.exe" and select End Task or End Process. Repeat this procedure until no "mstray.exe" process is running then select "msnmsg.exe" and repeat the same process as above.
4. Close "Task Manager" and run X-cleaner.
Delete a Registry Key
1.Click on "Start" then "Run".
2.Type in "regedit" then click "OK"
3.In the Left pane scroll down to "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run".
4.On the Right pane right click on "MSN" and click on delete.
5.Close the Registry editor.