How to remove Backdoor.Bifrose.M

Backdoor.Bifrose.M remover

Backdoor.Bifrose.M removal process

For remove Backdoor.Bifrose.M virus,please clean/delete all Backdoor.Bifrose.M infected files and Delete/Modify any values Backdoor.Bifrose.M added to the registry as following:
Once executed, the Trojan creates the following file:
%System32%\msnmsie.exe

The Trojan creates the following registry entries, so that it runs every time Windows starts:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"StartKey" = "%System%\msnmsie.exe"

It creates the following registry subkeys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{A5CDF7EC-751B-46aa-AD69-4005FE080DE8}
HKEY_LOCAL_MACHINE\SOFTWARE\SKav
HKEY_CURRENT_USER\SOFTWARE\SKav

It then creates the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{A5CDF7EC-751B-46aa-AD69-4005FE080DE8}\"stubpath" = "C:\WINDOWS\system32\msnmsie.exe"

The Trojan creates a new Internet Explorer instance and injects itself into this process to hide its presence on the compromised computer.

It periodically attempts to access the following Web sites:
freexuite.ns01.us
gundamms08.ns1.name

The Trojan may open a back door allowing a remote attacker unauthorized access on the compromised computer.

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
• If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

2. Update the virus definitions. Reboot computer in SafeMode;

3. Delete the IE temp files,some Backdoor.Bifrose.M temp file exisit there.

4.If you failed to remove Backdoor.Bifrose.M,please go to our remove help forum:http://help.antiviruses123.com