Troj/Agent-CJ

Please follow the instructions for removing Trojans.

You should also change your Internet Explorer settings using Tools|Internet options|General to remove any modifications made by the Trojan.

Windows NT/2000/XP/2003

In Windows NT/2000/XP/2003 you will also need to edit the following registry entry for each user who ran the virus. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.

At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.

Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export Range' panel, click 'All', then save your registry as Backup.

Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:

HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\

and delete it if it exists.

Close the registry editor.

Troj/Agent-CJ is a Windows Trojan that drops another Trojan and changes browser settings.

The Trojan copies itself to the Windows System folder as alg32.exe and spoolsvu.exe, and runs in the background as a process. Troj/Agent-CJ also drops htass.dll in the Windows folder, which is detected by Sophos as Troj/CWS-C.

The Trojan creates the following registry entries so as to run automatically on user logon:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
ALG32
%SYSTEM%\ALG32.EXE

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
SPOOLSVU
%SYSTEM%\SPOOLSVU.EXE

The Trojan also creates the following registry entries:

HKLM\SOFTWARE\Microsoft\Internet Explorer\Main
MSMsgSvc

HKLM\SOFTWARE\Microsoft\Internet Explorer\Main
SEHLPstp

HKLM\SOFTWARE\Microsoft\Internet Explorer\Main
WTLBAstp

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
Browser Helper Objects
(9E6EC32A-7C19-4409-99E8-FC980BCDAF26)

HKCR\CLSID\(9E6EC32A-7C19-4409-99E8-FC980BCDAF26)\