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ThreatExpert's Statistics for Net-Worm.Win32.Koobface.brr [Kaspersky Lab]:

Net-Worm.Win32.Koobface.brr [Kaspersky Lab] is also known as:
Threat AliasNumber of Incidents
W32.Koobface.D [Symantec]11
Net-Worm.Koobface [PC Tools]10
W32/Koobface.worm.gen.ac [McAfee]10
Mal/KoobHeur-A [Sophos]6
Net-Worm.Win32.Koobface [Ikarus]2
Troj/Capper-Gen [Sophos]2
Win32/Koobface.worm.20748 [AhnLab]2
Downloader [Symantec]1
Downloader.Generic [PC Tools]1
Trojan.Win32.Koobface [Ikarus]1
Win32/Koobface.worm.21504.N [AhnLab]1

Net-Worm.Win32.Koobface.brr [Kaspersky Lab] is known to be created as:
%ProgramFiles%\captcha.dll
%Windir%\rdr_1265498029.exe
Notes:
  • %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.
  • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.