ThreatExpert's Statistics for Troj/Agent-JRN [Sophos]:

Troj/Agent-JRN [Sophos] is also known as:

Threat Alias	Number of Incidents
Trojan Horse [Symantec]	13
Backdoor-CEP.gen.q [McAfee]	12
Trojan.Win32.Agent.buag [Kaspersky Lab]	10
Win-Trojan/Agent.44925.B [AhnLab]	10
BKDR_BIFROSE.DZZ [Trend Micro]	9
VirTool.Win32.Injector [Ikarus]	9
Trojan.Win32.Agent.bwnu [Kaspersky Lab]	8
VirTool:Win32/Injector.gen!Y [Microsoft]	8
BackDoor-DVT [McAfee]	7
Trojan.Dropper [Symantec]	7
VirTool:Win32/Injector.gen!W [Microsoft]	7
Win-Trojan/Agent.44957 [AhnLab]	6
Win-Trojan/Agent.11776.KS [AhnLab]	5
Trojan.Generic [PC Tools]	4
Virus.Win32.Inject [Ikarus]	3
Trojan:Win32/Midgare.A [Microsoft]	2
Backdoor:Win32/Poisonivy.E [Microsoft]	1
Trojan.Agent!sd6 [PC Tools]	1
Trojan.Midgare!sd6 [PC Tools]	1
Trojan.Win32.Agent.cbex [Kaspersky Lab]	1
Trojan.Win32.Midgare.vlc [Kaspersky Lab]	1
Trojan.Win32.Midgare.vmg [Kaspersky Lab]	1

Troj/Agent-JRN [Sophos] is known to be created as:

%ProgramFiles%\bifrost\server.exe

%ProgramFiles%\jnooony\coffin.exe

%ProgramFiles%\systen\win32.exe

%System%\bifrost\server.exe

%System%\microsoft\microsoft.exe

%System%\windows.exe

%Temp%\decrypted.exe

%Temp%\ixp000.tmp\memo.exe

%Temp%\server.exe

%Temp%\vista_activation_crack.exe

%Windir%\sys\12.exe

%Windir%\sys\21.exe

%Windir%\sys\9.exe

%Windir%\win32.exe

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).
%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.