Manual Removal Guide for Win32.Agent.bid

The following instructions have been created to help you to get rid of "Win32.Agent.bid" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

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Threat Details:

Categories:

• trojan

Description:

Win32.Agent.bid copies an executable file into Windows directory, starts itself via autorun as "Firewall auto setup" without giving the user a possibility to cancel that process. Also blocks some buttons in applications (e.g. 3 main buttons in SpyBot).

Removal Instructions:

Autorun:

Please use Spybot-S&D, RunAlyzer or msconfig.exe to remove the following autorun entries.

• Entries named "Firewall auto setup" and pointing to "*\Temp\winlogon.exe".
• Entries named "startdrv" and pointing to "<$WINDIR>\Temp\startdrv.exe".

Files:

Please use Windows Explorer or another file manager of your choice to locate and delete these files.

• The file at "<$LOCALSETTINGS>\Temp\winlogon.exe".
• The file at "<$SYSDIR>\DefLib.sys".
• The file at "<$LOCALSETTINGS>\temp\winlogon.exe".
• The file at "<$LOCALSETTINGS>\temp\winlogon.exe".
• The file at "<$SYSDIR>\comi.dll".
• The file at "<$SYSDIR>\confg.xml".
• The file at "<$SYSDIR>\help.txt".
• The file at "<$SYSDIR>\keys.xml".
• The file at "<$SYSDIR>\5_exception.nls".
• The file at "<$SYSDIR>\ctfmon.rgn".
• The file at "<$WINDIR>\Temp\startdrv.exe".

Make sure you set your file manager to display hidden and system files. If Win32.Agent.bid uses rootkit technologies, use our RootAlyzer or our Total Commander anti-rootkit plugins.
You will have to use a global search for files without a name specified. Be extra careful, because just the name might not be enough to identify files!

Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D to remove them.

Registry:

You can use regedit.exe (included in Windows) to locate and delete these registry entries.

• Remove "206.51.226.211" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\".
• Remove "206.51.226.211" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Security\".
• Remove "85.249.139.67" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\".
• Remove "85.249.139.67" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Security\".
• Delete the registry key "SysLibrary" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\".
• Delete the registry key "SysLibrary" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\".
• Delete the registry key "SysLibrary" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\".
• Delete the registry key "{040FA520-78C6-41CE-81D0-9E733ABC1A29}" at "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\".
• Delete the registry key "{8336C2A1-1A8F-470D-B499-D7C663790521}" at "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\".
• Delete the registry key "{040FA520-78C6-41ce-81D0-9E733ABC1A29}" at "HKEY_CLASSES_ROOT\CLSID\".
• Delete the registry key "{040FA520-78C6-41ce-81D0-9E733ABC1A29}" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\".
• Remove "66.232.98.112" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Desktop\".
• Remove "66.232.98.112" from registry value "host" at "HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Security\".
• Delete the registry value "Firewall auto setup" at "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\".
• Delete the registry key "{3F08996E-0A3D-456c-BEEC-9F51B6F614BC}" at "HKEY_CLASSES_ROOT\CLSID\".
• Delete the registry key "{3F08996E-0A3D-456c-BEEC-9F51B6F614BC}" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\".
• Remove "C:\WINDOWS\system32\drivers\ntndis.exe" from registry value "Shell" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\".
• Delete the registry key "ntndis" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\".
• Delete the registry key "ntndis" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\".
• Delete the registry key "ntndis" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\".

If Win32.Agent.bid uses rootkit technologies, use our RegAlyzer, RootAlyzer or our Total Commander anti-rootkit plugins.

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,

1. Please read these instructions before requesting assistance,
2. Then start your own thread in the Malware Removal Forum where a volunteer analyst will advise you as soon as available.