Manual Removal Guide for DyFuCa.InternetOptimizer

[Friday]

The following instructions have been created to help you to get rid of "DyFuCa.InternetOptimizer" 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:

• malware

Description:

belongs to avenue media, installs without user consent, runs in background, changes its files regularly to evade detection.

Removal Instructions:

Autorun:

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

• Entries named "[01]##############################################################################################################################" and pointing to "<$PROGRAMFILES>\Internet Optimizer\update\rogue.exe".
• Entries named "Internet Optimizer" and pointing to "*\optimize.exe".
• Entries named "Internet Optimizer" and pointing to "<$PROFILE>\Internet Optimizer\optimize.exe".
• Entries named "Internet Optimizer" and pointing to "*optimize.exe?".
• Entries named "Internet Optimizer".
• Entries named "Internet Optimizer".
• Entries named "Internet Optimizer" and pointing to "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• Entries named "Internet Optimizer".
• Entries named "Internet Optimizer" and pointing to "C:\Internet Optimizer\optimize.exe".
• Entries named "Internet Optimizer".
• Entries pointing to "C:\Internet Optimizer\optimize.exe".

Installed Software List:

You can try to uninstall products with the names listed below; for items identified by other properties or to avoid malware getting active again on uninstallation, use Spybot-S&D or RunAlyzer to locate and get rid of these entries.

• Products that have a key or property named "Internet Optimizer Software Installer".
• Products that have a key or property named "Kapabout".
• Products that have a key or property named "WSEM Update".
• Products that have a key or property named "DyFuCA".
• Products that have a key or property named "DyFuCA Active Alert".
• Products that have a key or property named "Internet Optimizer".
• Products that have a key or property named "Internet Optimizer Active Alert".

Files:

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

• The file at "<$PROGRAMFILES>\Internet Optimizer\update\rogue.exe".
• The file at "<$WINDIR>\Temp\cfin".
• The file at "<$WINDIR>\Temp\cfout.txt".
• The file at "<$WINDIR>\Temp\kaw".
• A file with an unknown location named "optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\optimize.exe".
• The file at "<$PROFILE>\Internet Optimizer\optimize.exe".
• A file with an unknown location named "optimize.exe".
• The file at "<$WINDIR>\optimize.exe".
• The file at "<$WINDIR>\nem220.dll".
• The file at "<$SYSDIR>\app_b.exe".
• A file with an unknown location named "File:"app_b.exe"".
• The file at "<$LOCALSETTINGS>\Temp\cfout.txt".
• The file at "<$LOCALSETTINGS>\Temp\cfin".
• The file at "<$WINDIR>\pf79.exe".
• The file at "<$WINDIR>\optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\optimize.exe".
• The file at "<$WINDIR>\optimize.exe".
• The file at "<$WINDIR>\..\tmp.txt".
• The file at "<$WINDIR>\nem220.dll".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$LOCALSETTINGS>\Temp\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\optimize.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\update\actalert.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\update\actalert.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "optimize.exe".
• The file at "<$WINDIR>\..\Program Files\Internet Optimizer\actalert.exe".
• A file with an unknown location named "actalert.exe".
• The file at "<$WINDIR>\TEMP\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\optimize.exe".
• The file at "<$WINDIR>\..\Internet Optimizer\update\actalert.exe".
• The file at "<$PROGRAMFILES>\Internet Optimizer\actalert.exe".
• A file with an unknown location named "actalert.exe".
• A file with an unknown location named "optimize.exe".
• A file with an unknown location named "igetnet.exe".

Make sure you set your file manager to display hidden and system files. If DyFuCa.InternetOptimizer 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.

Folders:

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

• The directory at "<$PROGRAMFILES>\Internet Optimizer\update".
• The directory at "<$PROGRAMFILES>\Internet Optimizer".
• The directory at "<$SYSDIR>\Internet Optimizer".
• The directory at "<$WINDIR>\..\Internet Optimizer".
• The directory at "<$WINDIR>\..\Internet Optimizer".
• The directory at "<$PROGRAMFILES>\Internet Optimizer".
• The directory at "C:\Internet Optimizer".
• The directory at "c:\Program Files\Internet Optimizer".

Make sure you set your file manager to display hidden and system files. If DyFuCa.InternetOptimizer 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 folders!

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.

• Delete the registry key "Avenue Media" at "HKEY_LOCAL_MACHINE\SOFTWARE\".
• Delete the registry key "AMeOpt" at "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\".
• Delete the registry key "AMeOpt" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\".
• Delete the registry key "Avenue Media" at "HKEY_CURRENT_USER\Software\".
• Delete the registry key "Avenue Media" at "HKEY_CURRENT_USER\Software\Policies\".
• Delete the registry key "Avenue Media" at "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\".
• Delete the registry key "Avenue Media" at "HKEY_LOCAL_MACHINE\Software\".
• A key in HKEY_CLASSES_ROOT\ named "DyFuCA_BH.BHObj.1", plus associated values.
• Delete the registry key "Internet Optimizer" at "HKEY_LOCAL_MACHINE\SOFTWARE\Avenue Media\".

If DyFuCa.InternetOptimizer 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.