Abuse Melding

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22-05-2014, 17:43 door Erik van Straten

The issue is that Vista (and XP) are unable to evaluate SHA256 based authenticode timestamps. Perhaps I can contribute by proving that EMET is not an incident. An unrelated, but common factor, appears to be the use of an intermediate time stamping certificate "Microsoft Time-Stamp PCA 2010" with a specific SHA1 thumbprint. Googling for: 2AA752FE64C49ABE82913C463529CF10FF2F04EE site:virustotal.com 2014 currently appears to reliably identify files that have been time stamped using SHA256. Unfortunately most of those files cannot simply be downloaded from the Microsoft site. However, there are exceptions: http://download.microsoft.com/download/1/6/B/16B06F60-3B20-4FF2-B699-5E9B7962F9AE/VSU4/vcredist_arm.exe (1.4MB) and http://download.microsoft.com/download/F/B/7/FB728406-A1EE-4AB5-9C56-74EB8BDDF2FF/ENU/x86/ReportViewer.msi (7.5MB). http://download.microsoft.com/download/7/C/5/7C514257-287C-49A9-BF50-F86BB3D4E60C/1033/x86/PowerPivot_for_Excel_x86.msi (95MB). I just downloaded these files. All use an SHA256 ...

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