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For remove VBS.Autill virus,please clean/delete all VBS.Autill infected files and Delete/Modify any values VBS.Autill added to the registry as following:
When the worm is executed, it creates the following files:
- %DriveLetter%\%System%\killVBS.vbs
- %DriveLetter%\killVBS.vbs
The worm then creates the following file on each drive so that it may execute whenever the drive is accessed:
%DriveLetter%\autorun.inf
The worm appends the following text to the above file if it already exists:
shellexecute=wscript.exe killVBS.vbs
Next, it modifies the following registry entries:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\"Userinit" = "%System%\userinit.exe, %System%\wscript.exe %System%\killVBS.vbs"
- HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\"Window Title" = " "
- HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\"Start Page" = " "
- HKEY_CLASSES_ROOT\vbsfile\"DefaultIcon" = "%SystemRoot%\System32\WScript.exe,2"
It may delete the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"MS32DLL" = "[RANDOM VALUE]"
The worm attempts to delete all files containing the following extension on the compromised computer:
.VBSRecommendationsSymantec 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 VBS.Autill 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 VBS.Autill temp file exisit there.
4.If you failed to remove VBS.Autill,please go to our remove help forum:http://help.antiviruses123.com
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