TROJ_UPATRE.FMS
Trojan-Downloader.Win32.Upatre.aetm (Kaspersky); Downloader.Upatre (Symantec); Trojan:Win32/Bagsu!rfn (Microsoft)
Windows
Tipo di minaccia informatica:
Trojan
Distruttivo?:
No
Crittografato?:
Sì
In the wild::
Sì
Panoramica e descrizione
Modifica determinadas entradas de registro para desactivar las funciones del Centro de seguridad. Esto permite que el malware ejecute sus rutinas sin ser detectado. Modifica las entradas de registro para desactivar la configuración del cortafuegos de Windows. Esta acción permite que el malware lleve a cabo sus rutinas sin ser detectado por el cortafuegos de Windows.
Dettagli tecnici
Instalación
Crea las siguientes copias de sí mismo en el sistema afectado y las ejecuta:
- %User Temp%\Xulantar.exe
(Nota: %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000, XP y Server 2003 suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp).
)Otras modificaciones del sistema
Modifica las siguientes entradas de registro:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\SharedAccess
Start = "4"
(Note: The default value data of the said registry entry is {User defined}.)
Modifica las siguientes entradas de registro para desactivar las funciones del Centro de seguridad:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusDisableNotify = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusOverride = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallDisableNotify = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallOverride = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UpdatesDisableNotify = "1"
(Note: The default value data of the said registry entry is {User defined}.)
Modifica las siguientes entradas de registro para desactivar la configuración del cortafuegos de Windows:
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\PublicProfile
EnableFirewall = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DoNotAllowExceptions = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\PublicProfile
DoNotAllowExceptions = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\PublicProfile
DisableNotifications = "1"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\DomainProfile
EnableFirewall = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\DomainProfile
DoNotAllowExceptions = "0"
(Note: The default value data of the said registry entry is {User defined}.)
HKEY_LOCAL_MACHINE\System\CurrenControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\DomainProfile
DisableNotifications = "1"
(Note: The default value data of the said registry entry is {User defined}.)
Finalización del proceso
Finaliza los servicios siguientes si los detecta en el sistema afectado:
- MpsSvc
- WinDefend
Rutina de descarga
Guarda los archivos que descarga con los nombres siguientes:
- %User Temp%\{random filename}.exe - detected as TSPY_DYRE.XMS
(Nota: %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000, XP y Server 2003 suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp).
)Robo de información
Recopila los siguientes datos:
- Computer name
- Operating system version
- Service pack installed
Soluzioni
Step 1
Los usuarios de Windows ME y XP, antes de llevar a cabo cualquier exploración, deben comprobar que tienen desactivada la opción Restaurar sistema para permitir la exploración completa del equipo.
Step 3
Elimine los archivos de malware que se han introducido/descargado mediante TROJ_UPATRE.FMS
- TSPY_DYRE.XMS
Step 4
Restaurar este valor del Registro modificado
Importante: si modifica el Registro de Windows incorrectamente, podría hacer que el sistema funcione mal de manera irreversible. Lleve a cabo este paso solo si sabe cómo hacerlo o si puede contar con ayuda de su administrador del sistema. De lo contrario, lea este artículo de Microsoft antes de modificar el Registro del equipo.
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\PublicProfile
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- From: EnableFirewall = "0" To: EnableFirewall = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- From: DoNotAllowExceptions = "0" To: DoNotAllowExceptions = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- From: DisableNotifications = "1" To: DisableNotifications = {User defined}
- In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SharedAccess
- From: Start = "4" To: Start = {User defined}
- From: Start = "4" To: Start = {User defined}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- From: AntiVirusDisableNotify = "1" To: AntiVirusDisableNotify = {User defined}
- From: AntiVirusDisableNotify = "1" To: AntiVirusDisableNotify = {User defined}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- From: AntiVirusOverride = "1" To: AntiVirusOverride = {User defined
- From: AntiVirusOverride = "1" To: AntiVirusOverride = {User defined
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- From: FirewallDisableNotify = "1" To: FirewallDisableNotify = {User defined
- From: FirewallDisableNotify = "1" To: FirewallDisableNotify = {User defined
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- From: FirewallOverride = "1" To: FirewallOverride = {User defined
- From: FirewallOverride = "1" To: FirewallOverride = {User defined
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- From: UpdatesDisableNotify = "1" To: UpdatesDisableNotify = {User defined
- From: UpdatesDisableNotify = "1" To: UpdatesDisableNotify = {User defined
Step 5
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como TROJ_UPATRE.FMS En caso de que el producto de Trend Micro ya haya limpiado, eliminado o puesto en cuarentena los archivos detectados, no serán necesarios más pasos. Puede optar simplemente por eliminar los archivos en cuarentena. Consulte esta página de Base de conocimientos para obtener más información.
Sondaggio