This dangerous program, Win32.Shadow, has a variety of functions depending on the needs of the attacker. It can be an e-mail flooder, which means it will clog a network or your PC by sending out massive quantities of e-mails.
You can also find it spamming from your PC. It is able to do this by gaining secret access and then will use your account to send out spam e-mails to countless unsuspecting users. It is also a backdoor so if entry is gained, it will open up a port on your PC and leave you vulnerable to other malicious attacks.
Remove at once.
Manually remove this scourge of a program by terminating all processes, files, folders and registry entries. If this process is confusing to you, you are not alone. Manual removal is difficult. For a fast and automatic solution, you have SpyZooka. SpyZooka can easily rid you of Win32.Shadow and ALL spyware in one fell swoop. SpyZooka scans, detects and eliminates spyware in an all-in-one system. An easy-to-use application, you will be protected with SpyZooka.