Been infected with PIDIEF need advice and help

Hi

 

a computer in our company has recently been infected with a PIDIEF trojan. unfortuantely we cant tell which strain of the virus we have. anyone know how to tell for a start and even better how to safely remove this trojan. we have scanned using symantec and it deletes it but it just keeps returning and we are currently scanning with malware and waiting for the results

 

any help is very appreciated.