Microsoft Malware Protection Center

Threat Research & Response Blog

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  • Blog Post: The Cost of Free $oftware (part 2)

    After we tracked down one of the sources for the Zlob trojan as a free torrent download, we decided to see exactly how deep the rabbit-hole goes. So we checked the newest uploads and saw another package for the latest version of WinRAR (3.80). It had just been uploaded so we decided to see if it really...
  • Blog Post: The Cost of Free $oftware

    Today we stumbled upon an interesting file. The file in question, " wrar380CorporateEdition.exe " (md5: f054f5a1bcb79098916c80b28e4f2bec), appears to be the install kit for the WinRar archiver. Upon closer inspection, it is actually a self-extract cab installer containing 2 files: "wrar380.Regged...
  • Blog Post: VISTA_32_BIT_BLACK(HAT)_EDITION_2009.iso

    As we’ve mentioned before, your average user is the most at risk of getting infected these days. So, with the release of Microsoft Security Essentials recently en masse, we’re really able to see some of the fruits of our labour over the last few years. We’re very pleased to see such a positive response...
  • Blog Post: Recession, Music, and Wimad

    Nowadays almost everyone is affected by the recession in one way or another. More and more people try to save money. Instead of buying licensed songs in CD form or from reputable online services, some people prefer to download songs via P2P or do a direct download from untrusted sites. This is a popular...
  • Blog Post: Another Reason to Avoid Piracy

    Earlier this month, our colleagues at the Online Services Security & Compliance Incident Management team were alerted to content on a Spaces page that was allegedly violating copyrights. The reporting party (a well-known band) was particularly concerned as this content was turning up on numerous...