Microsoft Malware Protection Center (MMPC) is now Windows Defender Security Intelligence (WDSI). Watch out for even more info about threats and protecting you and your Windows computer.
Alert level: Severe Detected with Windows Defender Antivirus
Also detected as: Trojan-Spy.Win32.Zbot.bee (Kaspersky) Infostealer.Banker.C (Symantec)
This threat can steal your personal and financial information. It can also give a hacker access and control of your PC.
It is usually installed by other malware, or via links to hacked or compromised websites sent in spam emails.
The Win32/Zbot family description has more information.