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ThreatExpert's awareness of the file "npf.sys":

Across all ThreatExpert reports, the file "npf.sys" has sometimes been a threat.
File "npf.sys" has the following statistics:
Total number of reports analysed611,932
Number of cases that involved the file "npf.sys"690
Number of incidents when this file was found to be a threat2
Statistical volume of cases when "npf.sys" was a threat0%
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Notes:
  • Please note that the name of the file should NOT be used to define if it is legitimate or not. Such determination can only be made by observing its dynamic behaviour.
  • In order to check a file, please submit it to ThreatExpert.
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The file "npf.sys" is known to be created under the following filenames:
%ProgramFiles%\grabsun\netsense\npf.sys
%ProgramFiles%\oi velox\manager\dll\win2k\npf.sys
%System%\drivers\npf.sys
%System%\drivers\pop.sys
%System%\jie\npf.sys
%System%\rtkit\npf.sys
%Temp%\npf.sys
%Temp%\rarsfx0\wpcap\4.1\npf.sys
%Temp%\rarsfx0\wpcap\npf.sys
%Temp%\winpcap40\npf.sys
Notes:
  • %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.
  • %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).
  • %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).

The file "npf.sys" has the following possible country of origin:
OriginNumber of Incidents
Italy14

The following threats are known to be associated with the file "npf.sys":
Threat AliasNumber of Incidents
Backdoor.generic!ct [PC Tools]1
Backdoor.Win32.RtKit [Ikarus]1
Generic BackDoor [McAfee]1
Generic.cd [McAfee]1
Infostealer.Gampass [Symantec]1
Mal/Generic-A [Sophos]1
Rootkit.NtRtk!sd5 [PC Tools]1
Rootkit.Win32.NtRtk [Ikarus]1
Rootkit.Win32.NtRtk [Kaspersky Lab]1
Troj/NtRootK-BM [Sophos]1
Trojan Horse [Symantec]1