Adware:W32/E404 is a Browser Helper Object (BHO) hijacker that displays pop-up advertisements and false security alerts.
There have been reports that Adware:W32/E404 is distributed bundled with rogueware or scamware program, such as iSecurity, VirusProtect, Advanced XP Defender, Advanced XP Fixer, Ultimate Defender, WinFixer and Ultimate Cleaner.
InstallationSome E404 variants may create this folder:
• C:\Program Files\Helper
with this file:
• C:\Program Files\[Random name].dll
Where the [
Random name] may be one of the following file names:
• C:\Program Files\Helper\e404.dll
• C:\Program Files\Helper\Helper.dll
• C:\Program Files\Helper\Helper2.dll
• C:\Program Files\Helper\Helper3.dll
• C:\Program Files\Helper\Helper4.dll
• C:\Program Files\Helper\Helper5.dll
• C:\Program Files\Helper\Helper6.dll
• C:\Program Files\Helper\1205449149.dll
• C:\Program Files\Helper\superfinderusa.dll
ActivityOnce loaded, the program will attempt to connect to remote sites (see above).
It will also hijack search queries made on these websites:
and sent the results to:
Registry
During installation, the following keys are created:
• [HKEY_LOCLA_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{[Random CLSID]}]
"@"="[Random name] helper"
Some variants that are bundled with rogueware may create these registry subkeys:
• [HKEY_CLASSES_ROOT\e405.e405mgr]
• [HKEY_CLASSES_ROOT\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}]
• [HKEY_LOCAL_MACHINE\Software\Classes\e405.e405mgr]
• [HKEY_LOCAL_MACHINE\Software\Classes\Interface\{F7D09218-46D7-4D3D-9B7F-315204CD0836}]
• [HKEY_LOCAL_MACHINE\Sofware\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{[Random CLSID]}]
"@"="[Random name] helper"