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ThreatExpert's Statistics for Adware:Win32/WhenU.B [Microsoft]:

Adware:Win32/WhenU.B [Microsoft] is also known as:
Threat AliasNumber of Incidents
Adware-WhenUSearch [McAfee]5
Adware.WhenUSearchBar [Symantec]4
Adware.WhenU!sd5 [PC Tools]3
not-a-virus:AdTool.Win32.WhenU.c [Kaspersky Lab]3
Adware.Agent.YHL [PC Tools]2 [Kaspersky Lab]2 [Kaspersky Lab]1

Adware:Win32/WhenU.B [Microsoft] is known to be created as:
Note: %Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).