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For remove Backdoor.Lancafdo virus,please run antivirus Run a full system scan and clean/delete all Backdoor.Lancafdo infected files and Delete/Modify any values added to the registry. Navigate to the subkey and delete the values as following Backdoor.Lancafdo details:
When executed, the Trojan copies itself as the following file:
%System%\mssrv32.exe
It then creates the following registry entries to register itself as a system service:
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"Type" = "00000010"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"Start" = "00000002"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"ObjectName" = "LocalSystem"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"ImagePath" = "%System%\mssrv32.exe"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"ErrorControl" = "00000000"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"DisplayName" = "Microsoft security update service"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\msupdate\"Description" = "This service downloading and installing Windows security updates"
- HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AFD\Parameters\"DisableRawSecurity" = "00000001"
The service has the following characteristics:
Display Name: Microsoft security update service
Image Path: %System%\mssrv32.exe
Startup Type: Automatic
The Trojan also creates a mutex with the following name:
{F3532CE1-0832-11B1-920A-25000A276A73}
Next, the Trojan executes the following file and injects itself into the running process:
%System%\svchost.exe
The Trojan then attempts to perform an HTTP post operation to the following URL:
[http://]cxim.inattack.ru/www3/www/stat[REMOVED]
Note: The posted data includes the name of the compromised computer and the version of the Trojan.
It then opens a back door to allow a remote attacker unauthorized access to the compromised computer.
The back door functionality allows a remote attacker to perform actions including the following operations on the compromised computer:
- Perform denial of service flood attacks on other computers (ICMP, TCP SYN, HTTP, UDP)
- Open URLs in Internet Explorer
- Download and execute files
- Suspend the Trojan
- Uninstall the Trojan
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 Backdoor.Lancafdo virus,you may also need do as following:
1.Please Download Google recommend safer browser Web browser, For more safe , Stay Secure on the Web and stay far away virus,Download URL http://www.antiviruses123.com/firefox/firefox.htm;
2. Temporarily Disable System Restore .
3. Update the virus definitions. Reboot computer in SafeMode;
4.Please download ATF Cleaner: IF you can not remove Backdoor.Lancafdo virus successfully,you may seek help on Free Virus Remove Help forum URL:http://help.antiviruses123.com.Our anti virus experts will help you handle Backdoor.Lancafdo virus:
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