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ThreatExpert's awareness of the file "captcha.dll":

Across all ThreatExpert reports, the file "captcha.dll" was mostly identified as a threat.
File "captcha.dll" has the following statistics:
Total number of reports analysed611,932
Number of cases that involved the file "captcha.dll"41
Number of incidents when this file was found to be a threat36
Statistical volume of cases when "captcha.dll" was a threat88%
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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.
  • For a comprehensive pro-active protection against threats, please consider ThreatFire - our behavioral antivirus solution.
The file "captcha.dll" is known to be created under the following filename:
%ProgramFiles%\captcha.dll
Note: %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

The following threats are known to be associated with the file "captcha.dll":
Threat AliasNumber of Incidents
Troj/Capa-Gen [Sophos]301
Net-Worm.Win32.Koobface [Ikarus]146
Generic.dx!msu [McAfee]144
Net-Worm.Win32.Koobface.dbh [Kaspersky Lab]144
Net-Worm.Win32.Koobface.eac [Kaspersky Lab]144
Trojan.Win32.Koobface [Ikarus]144
Generic.dx!ltx [McAfee]96
Troj/Capper-Gen [Sophos]35
Downloader [Symantec]16
Net-Worm.Win32.Koobface.cci [Kaspersky Lab]12
Net-Worm.Win32.Koobface.csy [Kaspersky Lab]12
Win32/Koobface.worm.17408.M [AhnLab]12
Downloader.Generic [PC Tools]9
Generic.dx!iuf [McAfee]4
Net-Worm.Koobface [PC Tools]4
Win32/Koobface.worm.17408.Q [AhnLab]4
Generic.dx [McAfee]1
Net-Worm.Win32.Koobface.brr [Kaspersky Lab]1
Net-Worm.Win32.Koobface.cvd [Kaspersky Lab]1
Trojan-Downloader.Win32.Nonaco.H [Ikarus]1