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View Full Version : Manual Removal Guide for Win32.BHO.acw



Friday
2008-11-29, 21:50
The following instructions have been created to help you to get rid of "Win32.BHO.acw" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

If this guide was helpful to you, please consider donating towards this site (http://www.safer-networking.org/index.php?page=donate).

Threat Details:

Categories:
trojan

Description:
The trojan installs a .dll file into the system directory which is registered as a browser helper object. It creates several registry entries.
Removal Instructions:

Files:

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

The file at "<$SYSDIR>\mshtmltbl.dll".
Make sure you set your file manager to display hidden and system files. If Win32.BHO.acw uses rootkit technologies, use our RootAlyzer (http://forums.spybot.info/downloads.php?id=8) or our Total Commander anti-rootkit plugins (http://forums.spybot.info/downloads.php?id=3).
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 (http://www.safer-networking.org/index.php?page=spybotsd) to remove them.

Registry:

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

Delete the registry key "{3348D07C-7C5C-D2C4-CFBA-A47F82347C8B}" at "HKEY_CLASSES_ROOT\CLSID\".
Delete the registry key "{3348D07C-7C5C-D2C4-CFBA-A47F82347C8B}" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\".
Delete the registry key "{B1B354EF-A505-4C5A-84EC-9E25791B8E72}" at "HKEY_CLASSES_ROOT\AppID\".
Delete the registry key "extension.DLL" at "HKEY_CLASSES_ROOT\AppID\".
Delete the registry key "{48D7A0BA-AA51-4F64-AD7D-C17C9DDA3635}" at "HKEY_CLASSES_ROOT\CLSID\".
Delete the registry key "{A366AE5B-C305-4CFF-9690-79E8DD9512F0}" at "HKEY_CLASSES_ROOT\CLSID\".
A key in HKEY_CLASSES_ROOT\ named "extension.WebEvents", plus associated values.
A key in HKEY_CLASSES_ROOT\ named "extension.WebEvents.1", plus associated values.
A key in HKEY_CLASSES_ROOT\ named "extension.WebExtension", plus associated values.
A key in HKEY_CLASSES_ROOT\ named "extension.WebExtension.1", plus associated values.
Delete the registry key "{3EC2FD4E-B22B-4952-A3BD-21D47EA66623}" at "HKEY_CLASSES_ROOT\Interface\".
Delete the registry key "{B71D9510-3E51-4230-B415-7113386B9878}" at "HKEY_CLASSES_ROOT\Interface\".
Delete the registry key "{5096C398-411C-4660-92CA-0B672BD09371}" at "HKEY_CLASSES_ROOT\TypeLib\".
If Win32.BHO.acw uses rootkit technologies, use our RegAlyzer (http://www.safer-networking.org/index.php?page=regalyzer), RootAlyzer (http://forums.spybot.info/downloads.php?id=8) or our Total Commander anti-rootkit plugins (http://forums.spybot.info/downloads.php?id=3).

Browser:

There are more browser plugins or items that cannot be safely described in simple words. Please use Spybot-S&D (http://www.safer-networking.org/index.php?page=spybotsd) to remove them.

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,
Please read these instructions (http://forums.spybot.info/showthread.php?t=288) before requesting assistance,
Then start your own thread in the Malware Removal Forum (http://forums.spybot.info/forumdisplay.php?f=22) where a volunteer analyst will advise you as soon as available.