Troj/Koobfa-A is a Trojan.
The Trojan attacks Facebook.
When first run, Troj/Koobfa-A diplays a pop-up error message saying:
Error installing Codec. Please contact support.
The Trojan creates the file <Windows>\fmark2.dat. This file is not malicious and may be deleted.
Troj/Koobfa-A may create the following registry entry:
HKLM\SYSTEM\ControlSet001\Control\Session Manager\PendingFileRenameOperations
<blank>
\??\<path to Trojan>\??\c:\windows\kenny##.exe
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations
<blank>
\??\<path to Trojan>\??\c:\windows\kenny##.exe