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ThreatExpert's Statistics for W32/Impair-A [Sophos]:

W32/Impair-A [Sophos] is also known as:
Threat AliasNumber of Incidents
Trojan-Dropper.Agent [Ikarus]183
Trojan Horse [Symantec]182
Generic BackDoor [McAfee]170
Backdoor.Win32.Agent.tig [Kaspersky Lab]169
Win-Trojan/Agent.16384.UF [AhnLab]26
Virus:Win32/Delicium.A [Microsoft]14
Trojan.Generic [PC Tools]13
W32/Autorun-OQ [Sophos]13
PE_DELZIUM.A [Trend Micro]6
Worm.Win32.AutoRun.erd [Kaspersky Lab]6
Virus.Win32.AutoRun.vc [Ikarus]4
W32.SillyFDC [Symantec]4
W32/Autorun.worm.bl [McAfee]4
New Win32 [McAfee]3
W32.Delezium!inf [Symantec]3
W32.Svich [Symantec]3
W32/Autorun.worm.fj [McAfee]3
Malware.Delezium [PC Tools]2
Backdoor.Trojan [Symantec]1
Backdoor.Win32.Agent.txy [Kaspersky Lab]1
Generic.dx [McAfee]1
IM-Worm.Win32.Sohanad.ow [Kaspersky Lab]1
IM-Worm.Win32.VB [Ikarus]1
P2P-Worm.Win32.Bacteraloh.t [Kaspersky Lab]1
Trojan.DL.AutoIt.DO [PC Tools]1
Trojan-Downloader.Win32.AutoIt.q [Ikarus]1
Virus.Win32.VB [Ikarus]1
W32.Blastclan [Symantec]1
W32.Imaut.AS [Symantec]1
W32.SillyDC [Symantec]1
W32/YahLover.worm.a [McAfee]1
Win-Trojan/Agent.536744 [AhnLab]1
Win-Trojan/Autorun.42067 [AhnLab]1
Worm.Sohanad.V [PC Tools]1
Worm.Win32.AutoRun.cys [Kaspersky Lab]1
Worm.Win32.AutoRun.uml [Kaspersky Lab]1
Worm.Win32.VB [Ikarus]1
Worm.Win32.VB.cj [Ikarus]1
WORM_JER.A [Trend Micro]1

W32/Impair-A [Sophos] has the following possible country of origin:
OriginNumber of Incidents
United Kingdom4

W32/Impair-A [Sophos] is known to be created as:
%CommonPrograms%\startup\svchots.exe
%CommonPrograms%\startup\systemil2.exe
%Programs%\startup\svchots.exe
%System%\blastclnnn.exe
%System%\dotnetfx.dll
%System%\myrvc.exe
%System%\scvhsot.exe
%System%\sscviihost.exe
%System%\ssvichosst.exe
%System%\svchots.exe
%System%\winsit.exe
%Windir%\dc.exe
%Windir%\help\other.exe
%Windir%\hinhem.scr
%Windir%\inf\other.exe
%Windir%\scvhsot.exe
%Windir%\sscviihost.exe
%Windir%\ssvichosst.exe
%Windir%\sviq.exe
%Windir%\system\fun.exe
%Windir%\systemil.exe
c:\documents.exe
Notes:
  • %CommonPrograms% is a variable that refers to the file system directory that contains the directories for the common program groups that appear on the Start menu for all users. A typical path is C:\Documents and Settings\All Users\Start Menu\Programs (Windows NT/2000/XP).
  • %Programs% is a variable that refers to the file system directory that contains the user's program groups. A typical path is C:\Documents and Settings\[UserName]\Start Menu\Programs.
  • %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).
  • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.