Microsoft Malware Protection Center

Threat Research & Response Blog

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  • Blog Post: Trojan downloader Chepvil on the UPSwing

    A new spam campaign using UPS (United Parcel Service) as a social-engineering draw was initiated this week. The spammed message contains an attachment, detected as TrojanDownloader:Win32/Chepvil.I . The spam campaign actually started around March 16th 2011. The threat was originally detected as Backdoor...
  • Blog Post: May MSRT by the numbers

    In May, we added Win32/Ramnit to the Microsoft Removal Tool (MSRT) detection capability, as my colleague Scott Molenkamp blogged . As of May 20th, MSRT disinfected 52,549 computers from the Win32/Ramnit infection. Ramnit is one of the four parasitic viruses out of the top 10 detected threat families...