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For remove W32.Bancorkut@mm virus,please clean/delete all W32.Bancorkut@mm infected files and Delete/Modify any values W32.Bancorkut@mm added to the registry as following:
When the worm executes, it creates the following file:
%Windir%\avgsh.exe
Next, it creates the following registry entries so that it executes whenever Windows starts:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"AVGShield" = "%Windir%\avgsh.exe"
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"MSMSGS" = "%Program Files%\Messenger\msmsgs.exe /background"
The worm searches for email addresses in files with the following extensions:
It also attempts to steal email addresses from the contact list in MSN Messenger.
The worm monitors active Internet Explorer windows.
It attempts to steal email addresses from the user account of the following social networking Web site:
www.orkut.com
It also attempts to steal user passwords from the following Web site:
www.terra.com
It then sends the gathered information to the following locations:
- [http://]maejoana.byethost13.com/Listas/aaa[REMOVED]
- [http://]maejoana.byethost13.com/Listas/bbb[REMOVED]
- [http://]maejoana.byethost13.com/Listas/ccc[REMOVED]
- [http://]maejoana.byethost13.com/Terras/save[REMOVED]
It may then download files from the following locations on to the compromised computer:
- [http://]feliznatal.rbcmail.ru/terra[REMOVED]
- [http://]feliznatal.rbcmail.ru/orkut/orkut[REMOVED]
- [http://]feliznatal.rbcmail.ru/orkut/orkut[REMOVED]
- [http://]feliznatal.rbcmail.ru/orkut/assun[REMOVED]
The above files may contain email data which is then sent to all email addresses gathered by the worm.
The email may have the following characteristics:
From:
Orkut Seu Profile foi Denunciado
Subject:
empty
Body:
Motivo:
Você está infectado(a) por algum Malware/Vírus.
Seu perfil está enviando mensagens ilí [REMOVED] rá apagado.
Orkut.com (c) 2008 - Google.com.br e seus fornecedores. Todos os direitos reservados.
When the URL in the email body is opened, the worm downloads potentially malicious files from the following locations on to the compromised computer:
- [http://]74.254.144.200/SHARE1/AO/Common/glori[REMOVED]
- [http://]www.ecologia-domestica.org/uploads/thumbs/glori[REMOVED]
- [http://]outthegarage.com/_private/glori[REMOVED]
- [http://]www.baixa.la/arquivos/6225814_i[REMOVED]
- [http://]www.baixa.la/arquivos/7082416_i[REMOVED]
- [http://]www.baixa.la/arquivos/6645328_i[REMOVED]
- [http://]www.baixa.la/arquivos/7028030_i[REMOVED]
- [http://]www.baixa.la/arquivos/7565219_i[REMOVED]
- [http://]www.baixa.la/arquivos/5141602_i[REMOVED]
- [http://]www.baixa.la/arquivos/27441_im[REMOVED]
- [http://]www.baixa.la/arquivos/1007857_i[REMOVED]
- [http://]www.baixa.la/arquivos/3526042_i[REMOVED]
- [http://]www.baixa.la/arquivos/7615191_i[REMOVED]
- [http://]www.baixa.la/arquivos/2609498_i[REMOVED]
- [http://]www.baixa.la/arquivos/6556335_i[REMOVED]
RecommendationsSymantec 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.
For successful remove W32.Bancorkut@mm virus,you may also need do as following:
1. Temporarily Disable System Restore .
2. Update the virus definitions. Reboot computer in SafeMode;
3. Delete the IE temp files,some W32.Bancorkut@mm temp file exisit there.
4.If you failed to remove W32.Bancorkut@mm,please go to our remove help forum:http://help.antiviruses123.com
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