Stealth.shared.dll is a mass-mailing worm W32.Theals.A@mm. Stealth.shared.dll spreads via open network shares. Stealth.shared.dll tries to terminate antiviral programs installed on a user computer. Stealth.shared.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: C:\stealth.exe C:\stealth.dcom.exe C:\stealth.ddos.exe C:\stealth.injector.exe C:\stealth.stat.exe C:\stealth.wm.exe C:\stealth.worm.exe C:\stealth.shared.dll Adds the value: "stealth.exe" = "C:\stealth.exe" "stealth.dcom.exe" = "C:\stealth.dcom.exe" "stealth.ddos.exe" = "C:\stealth.ddos.exe" "stealth.injector.exe" = "C:\stealth.injector.exe" "stealth.stat.exe" = "C:\stealth.stat.exe" "stealth.wm.exe" = "C:\stealth.wm.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove stealth.shared.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.