Heredar del objeto primario las entradas de permiso que se aplican a los objetos secundarios. Presione F5 para actualizar el Editor del Registro. Anote la ruta de acceso al archivo DLL al que se hace referencia. Elimine la entrada del servicio de malware de la subclave Run del Registro.
En las dos subclaves, busque cualquier entrada que comience por "rundll Elimine la entrada. Busque archivos Autorun. Haga visibles los archivos ocultos. Seleccione Mostrar todos los archivos y carpetas ocultos para poder ver el archivo. En el paso 12b, ha anotado la ruta de acceso al archivo. Por ejemplo, ha observado una ruta similar a la siguiente:.
Edite los permisos en el archivo para agregar Control total para Todos. Elimine el archivo. Si una vez completado este procedimiento, observa que el equipo puede haberse infectado de nuevo, es posible que se cumpla una de las siguientes condiciones:.
Por ejemplo, no se ha eliminado el trabajo de AT o un archivo Autorun. Para comprobar el estado de la subclave del Registro SvcHost, siga estos pasos:. Por ejemplo, en este procedimiento, el nombre del servicio de malware es "Iaslogon". Si utiliza SMS o Configuration Manager , primero debe volver a habilitar el servicio del servidor. En la tabla siguiente se muestran los permisos predeterminados para cada sistema operativo. Estos permisos pueden diferir de los permisos establecidos en su entorno.
Answer Desk. Los controladores de dominio responden con lentitud a las solicitudes del cliente. No se puede obtener acceso a diversos sitios Web relacionados con la seguridad.
Cree un nuevo GPO. Haga clic en Aceptar. Haga doble clic en Servidor. Haga clic en Detener. Haga clic en Aplicar. Detenga el servicio Programador de tareas. Para ello, siga estos pasos: Haga doble clic en la entrada "ServiceDll". Elimine cualquier archivo Autorun. If your antivirus software does not detect Conficker, you can use the Microsoft Safety Scanner to clean the malware. Note The Microsoft Safety Scanner does not prevent reinfection because it is not a real-time antivirus program.
This tool is available as a component of the Microsoft Desktop Optimization Pack 6. These manual steps are not required any longer and should only be used if you have no antivirus software to remove the Conficker virus. The following detailed steps can help you manually remove Conficker from a system:. Log on to the system by using a local account.
Important Do not log on to the system by using a Domain account, if it is possible. Especially, do not log on by using a Domain Admin account. The malware impersonates the logged on user and accesses network resources by using the logged on user credentials. This behavior allows for the malware to spread. Stop the Server service. This removes the Admin shares from the system so that the malware cannot spread by using this method.
Note The Server service should only be disabled temporarily while you clean up the malware in your environment. This is especially true on production servers because this step will affect network resource availability. As soon as the environment is cleaned up, the Server service can be re-enabled.
Select Disabled in the Startup type box. ImportantThis section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.
Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.
For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:. Click Start , type regedit in the Start Search box, and then click regedit. In the Value data box, type 4, and then click OK. Exit Registry Editor, and then restart the computer. Note The Task Scheduler service should only be disabled temporarily while you clean up the malware in your environment.
This is especially true on Windows Vista and Windows Server because this step will affect various built-in Scheduled Tasks. As soon as the environment is cleaned up, re-enable the Server service. Download and manually install security update MS For more information, visit the following Microsoft Web site:. In this scenario, you must download the update from an uninfected computer, and then transfer the update file to the infected system.
We recommend that you burn the update to a CD because the burned CD is not writable. Therefore, it cannot be infected. If a recordable CD drive is not available, a removable USB memory drive may be the only way to copy the update to the infected system.
If you use a removable drive, be aware that the malware can infect the drive with an Autorun. After you copy the update to the removable drive, make sure that you change the drive to read-only mode, if the option is available for your device. If read-only mode is available, it is typically enabled by using a physical switch on the device.
Then, after you copy the update file to the infected computer, check the removable drive to see whether an Autorun. If it was, rename the Autorun. Reset any Local Admin and Domain Admin passwords to use a new strong password. In the details pane, right-click the netsvcs entry, and then click Modify. B, the service name was random letters and was at the bottom of the list. With later variants, the service name may be anywhere in the list and may seem to be more legitimate. To verify, compare the list in the "Services table" with a similar system that is known not to be infected.
Note the name of the malware service. You will need this information later in this procedure. Delete the line that contains the reference to the malware service.
Make sure that you leave a blank line feed under the last legitimate entry that is listed, and then click OK. Notes about the Services table. All the entries in the Services table are valid entries, except for the items that are highlighted in bold.
The highlighted, malicious entry that is supposed to resemble the first letter is a lowercase "L. In a previous procedure, you noted the name of the malware service. In our example, the name of the malware entry was "Iaslogon. In Registry Editor, locate and then click the following registry subkey, where BadServiceName is the name of the malware service:. Right-click the subkey in the navigation pane for the malware service name, and then click Permissions. In the Advanced Security Settings dialog box, click to select both of the following check boxes:.
Inherit from parent the permission entries that apply to child objects. Include these with entries explicitly defined here. Replace permission entries on all child objects with entries shown here that apply to child objects. Press F5 to update Registry Editor. Note the path of the referenced DLL. Remove the malware service entry from the Run subkey in the registry.
In both subkeys, locate any entry that begins with "rundll Delete the entry. Check for Autorun. Use Notepad to open each file, and then verify that it is a valid Autorun. The following is an example of a typical valid Autorun. Set Show hidden files and folders so that you can see the file.
In step 12b, you noted the path of the referenced. For example, you noted a path that resembles the following:. Click Tools , and then click Folder Options. Edit the permissions on the file to add Full Control for Everyone.
Click Everyone , and then click to select the Full Control check box in the Allow column. Delete the referenced. Turn off Autorun to help reduce the effect of any reinfection. For more information, click the following article number to view the article in the Microsoft Knowledge Base:.
If you are running Windows Vista or Windows Server , install security update Note Update and security update are not related to this malware issue.
These updates must be installed to enable the registry function in step 23b. If the system is running Windows Defender, re-enable the Windows Defender autostart location.
To do this, type the following command at the command prompt:. To change this setting back, type the following command at a command prompt:. If, after you complete this procedure, the computer seems to be reinfected, either of the following conditions may be true:.
One of the autostart locations was not removed.
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