Sí, esta web está clasificada como infectora con W32.SillyFDC
y al respecto del virus que ha infectado el ordenador por descargar y ejecutar el fichero en cuestión:
[quote="Symantec"]
W32.SillyFDCRisk Level 1: Very LowPrinter Friendly Page
SUMMARY TECHNICAL DETAILS REMOVAL Discovered: February 27, 2007
Updated: February 27, 2007 4:58:33 PM
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP
W32.SillyFDC is a generic detection that detects variants of the W32.Silly family of worms that spread by copying itself to removable media and may download other malicious applications.
Note: Symantec strongly recommends that customers take specific steps to control the execution of applications referenced in autorun.inf files that may be located on removable and network drives. Threats such as this one frequently attempt to spread to other computers using these avenues. Configuration changes made to a computer can limit the possibility of new threats compromising it. For more information, see the following document:
How to prevent a virus from spreading using the "AutoRun" featureProtectionInitial Rapid Release version January 8, 2004
Latest Rapid Release version March 14, 2009 revision 048
Initial Daily Certified version January 8, 2004
Latest Daily Certified version March 14, 2009 revision 003
Initial Weekly Certified release date July 12, 2006
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat AssessmentWildWild Level: Low
Number of Infections: 0 - 49
Number of Sites: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Easy
DamageDamage Level: Low
Degrades Performance: Copying itself to various folder locations may degrade performance.
DistributionDistribution Level: Low
Target of Infection: Floppy drive.
[/quote]
Fuente:
http://www.symantec.comy en detalles tecnicos vemos:
[quote="Symantec, para el SillyFDC"]When W32.SillyFDC is executed, it may copy itself to the following folder locations:
%System%
%Windir%
%Temp%
%UserProfile%
%ProgramFiles%
%SystemDrive%
%CommonProgramFiles%
%CurrentFolder%
Using any of the following file names with a .com or .exe extension:
CALC
calc
mscalc.exe
startupfolder
config_
startupfolder.com
config_.com
It then scans the compromised computer to create copies of itself in various folders. It will use the existing folder name as its new file name. For example, ABC folder will have a copy of the virus inside the folder as ABC.exe.
The worm may copy itself in drives A:\ through Z:\.
Next, it may add a value to the following registry subkeys so that it runs every time Windows starts.:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows\"load"
The worm may attempt to copy itself to removable drives and mapped drives, as well as creating the following file so that the worm runs every time the removable drive is attached to a computer:
[REMOVABLE DRIVE]:\Autorun.infRecommendationsSymantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
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.
Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
If a 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.
Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
Isolate compromised computers quickly to prevent threats from spreading further. 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.
If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources[/quote]
Como sea que vemos que se propaga por pendrive desde los ordenadores infectados, lo primero será vacunar con el ELIPEN:
vacune todas sus unidades de disco y pendrive con el ELIPEN:
[b]ELIPEN.EXE[/b]http://www.zonavirus.com/descargas/elipen.asp Tras probarlo, reiniciar y postearnos el contenido de C:\infosat.txt para ver el resultado del proceso
y como sea que puede haberse copiar en carpetas del disco duro y en pendrives con diferentes nombres, lanzar este AV ONLINE y postearnos el informe resultante, para ver el alcance de la infeccion y obrar en consecuenia
http://www.kaspersky.com/kos/english/kavwebscan.html y seleccionar MY COMPUTER para escanearlo todo. Si no se tiene la version de Java actualizada, a la izquierda de la ventana que presenta dicho acceso, ofrecen link de descarga...
Dicho AV ONLINE no limpia, solo testea, asi que lo que pretendemos con ello es solo el informe, ya obraremos en consecuencia. ms.
[img]
http://img.photobucket.com/albums/v666/sUBs/Kas-SaveReport-1.gif[/img]A la vista del informe, seguiremos.
saludos
ms, 15-3-2009
msc hotline sat Virus Research Engineer