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ThreatExpert's Statistics for Trojan:Win32/Refpron.F [Microsoft]:

Trojan:Win32/Refpron.F [Microsoft] is also known as:
Threat AliasNumber of Incidents
Mal/Generic-A [Sophos]74
Packed.Win32.Koblu.d [Kaspersky Lab]42
Trojan.Win32.Koblu.bkt [Kaspersky Lab]12
Trojan.Win32.Delf.pep [Kaspersky Lab]4
Trojan.Win32.Refpron [Ikarus]2
Backdoor.Win32.Delf.ryb [Kaspersky Lab]1
Downloader [Symantec]1
Generic Downloader.x!hz [McAfee]1
Troj/Dcaei-Gen [Sophos]1
Trojan Horse [Symantec]1
Trojan.Agent [Ikarus]1
Trojan.Generic [PC Tools]1
Trojan.Win32.Koblu.bcn [Kaspersky Lab]1
Trojan.Win32.Koblu.i [Kaspersky Lab]1
Win-Trojan/Fraudload.51200.M [AhnLab]1
Win-Trojan/Koblu.45568.AE [AhnLab]1

Trojan:Win32/Refpron.F [Microsoft] has the following possible country of origin:
OriginNumber of Incidents
China72

Trojan:Win32/Refpron.F [Microsoft] is known to be created as:
%System%\btwsrv.dll
%System%\evdoserver.dll
Note: %System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).