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View Full Version : Manual Removal Guide for Bifrose.gen



Friday
2008-11-29, 14:53
The following instructions have been created to help you to get rid of "Bifrose.gen" 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:
Generic detection of the Bifrose trojan. Bifrose is a trojan that installs itself into the windows directory and starts automatically by system startup. When the computer is connected to the internet the trojan tries to connect to a server and waits for new orders to spy out the user's habbits.
Removal Instructions:

Autorun:

Important: There are more autorun entries 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.

Files:

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

The file at "<$WINDIR>\plugin1.dat".
The file at "<$WINDIR>\SysPr.prx".
Make sure you set your file manager to display hidden and system files. If Bifrose.gen 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 value "klg" at "HKEY_CURRENT_USER\".
Delete the registry key "øOFTWARE" at "HKEY_CURRENT_USER\".
Delete the registry value "plg1" at "HKEY_CURRENT_USER\".
Delete the registry value "nck" at "HKEY_LOCAL_MACHINE\".
If Bifrose.gen 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).

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.