Author: Clive Fuentebella   
 

Trojan:Win32/Glupteba.SM!MTB (MICROSOFT)

 PLATFORM:

Windows

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL::
 DISTRIBUTION POTENTIAL::
 REPORTED INFECTION:
 INFORMATION EXPOSURE:
Low
Medium
High
Critical

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File size: 549,888 bytes
File type: EXE
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 10 сентября 2021

Detalles de entrada

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Instalación

Infiltra los archivos siguientes:

  • %AppDataLocalLow%\{Random characters}-shm
  • %AppDataLocalLow%\{Random characters}-wal
  • %AppDataLocalLow%\{Random characters}
  • %AppDataLocalLow%\{Random characters}.dll
  • %AppDataLocalLow%\{Random characters}.zip
  • %AppDataLocalLow%\{Random characters}\{Random characters}.zip
  • %AppDataLocalLow%\{Random characters}\AccessibleHandler.dll
  • %AppDataLocalLow%\{Random characters}\AccessibleMarshal.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-file-l1-2-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-file-l2-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-handle-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-heap-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-interlocked-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-libraryloader-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-localization-l1-2-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-memory-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-namedpipe-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processenvironment-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processthreads-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processthreads-l1-1-1.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-profile-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-string-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-synch-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-synch-l1-2-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-sysinfo-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-timezone-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-core-util-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-conio-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-convert-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-environment-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-filesystem-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-heap-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-locale-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-math-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-multibyte-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-private-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-process-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-runtime-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-stdio-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-string-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-time-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-utility-l1-1-0.dll
  • %AppDataLocalLow%\{Random characters}\breakpadinjector.dll
  • %AppDataLocalLow%\{Random characters}\freebl3.dll
  • %AppDataLocalLow%\{Random characters}\IA2Marshal.dll
  • %AppDataLocalLow%\{Random characters}\ldap60.dll
  • %AppDataLocalLow%\{Random characters}\ldif60.dll
  • %AppDataLocalLow%\{Random characters}\lgpllibs.dll
  • %AppDataLocalLow%\{Random characters}\libEGL.dll
  • %AppDataLocalLow%\{Random characters}\MapiProxy_InUse.dll
  • %AppDataLocalLow%\{Random characters}\MapiProxy.dll
  • %AppDataLocalLow%\{Random characters}\mozglue.dll
  • %AppDataLocalLow%\{Random characters}\mozMapi32_InUse.dll
  • %AppDataLocalLow%\{Random characters}\mozMapi32.dll
  • %AppDataLocalLow%\{Random characters}\msvcp140.dll
  • %AppDataLocalLow%\{Random characters}\nss3.dll
  • %AppDataLocalLow%\{Random characters}\nssckbi.dll
  • %AppDataLocalLow%\{Random characters}\nssdbm3.dll
  • %AppDataLocalLow%\{Random characters}\prldap60.dll
  • %AppDataLocalLow%\{Random characters}\qipcap.dll
  • %AppDataLocalLow%\{Random characters}\softokn3.dll
  • %AppDataLocalLow%\{Random characters}\ucrtbase.dll
  • %AppDataLocalLow%\{Random characters}\vcruntime140.dll
  • %Application Data%\Microsoft\Network\sqlcmd.exe
  • %User Temp%\{Random characters}.exe

(Nota: %Application Data% es la carpeta Application Data del usuario activo, que en el caso de Windows 98 y ME suele estar ubicada en C:\Windows\Profiles\{nombre de usuario}\Application Data, en el caso de Windows NT en C:\WINNT\Profiles\{nombre de usuario}\Application Data, en el caso de Windows 2000(32-bit), XP y Server 2003(32-bit) en C:\Documents and Settings\{nombre de usuario}\Local Settings\Application Data y en el caso de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Roaming.).

. %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000(32-bit), XP y Server 2003(32-bit) suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp y en el case de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Local\Temp).

)

Agrega los procesos siguientes:

  • "%User Temp%\{Random characters}.exe
  • cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "{Malware file path and name}"

(Nota: %User Temp% es la carpeta Temp del usuario activo, que en el caso de Windows 2000(32-bit), XP y Server 2003(32-bit) suele estar en C:\Documents and Settings\{nombre de usuario}\Local Settings\Temp y en el case de Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) y 10(64-bit) en C:\Users\{nombre de usuario}\AppData\Local\Temp).

)

Otros detalles

It connects to the following possibly malicious URL:

  • {BLOCKED}e.in
  • {BLOCKED}.{BLOCKED}.245.117
  • {BLOCKED}.{BLOCKED}.84.30

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 16.970.04
First VSAPI Pattern Release Date: 16 de сентября de 2021
VSAPI OPR PATTERN-VERSION: 16.971.00
VSAPI OPR PATTERN DATE: 17 de сентября de 2021

Step 2

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 4

Reiniciar en modo seguro

[ learnMore ]

Step 5

Deleting Scheduled Tasks

The following {Task Name} - {Task to be run} listed should be used in the steps identified below:  

  • Task name: Azure-Update-Task
    Task to be run: %Application Data%\Microsoft\Network\sqlcmd.exe

For Windows 2000, Windows XP, and Windows Server 2003:

  1. Open the Windows Scheduled Tasks. Click Start>Programs>Accessories>
    System Tools>Scheduled Tasks.
  2. Locate each {Task Name} values listed above in the Name column.
  3. Right-click on the said file(s) with the aforementioned value.
  4. Click on Properties. In the Run field, check for the listed {Task to be run}.
  5. If the strings match the list above, delete the task.

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

  1. Open the Windows Task Scheduler. To do this:
    • On Windows Vista, Windows 7, and Windows Server 2008, click Start, type taskschd.msc in the Search input field, then press Enter.
    • On Windows 8, Windows 8.1, and Windows Server 2012, right-click on the lower left corner of the screen, click Run, type taskschd.msc, then press Enter.
  2. In the left panel, click Task Scheduler Library.
  3. In the upper-middle panel, locate each {Task Name} values listed above in the Name column.
  4. In the lower-middle panel, click the Actions tab. In the Details column, check for the {Task to be run} string.
  5. If the said string is found, delete the task.

Step 6

Buscar y eliminar estos archivos

[ learnMore ]
Puede que algunos de los archivos del componente estén ocultos. Asegúrese de que tiene activada la casilla Buscar archivos y carpetas ocultos en la opción "Más opciones avanzadas" para que el resultado de la búsqueda incluya todos los archivos y carpetas ocultos. DATA_GENERIC_FILENAME_1
  • En la lista desplegable Buscar en, seleccione Mi PC y pulse Intro.
  • Una vez haya encontrado el archivo, selecciónelo y, a continuación, pulse MAYÚS+SUPR para eliminarlo definitivamente.
  • Repita los pasos 2 a 4 con el resto de archivos:
      • %AppDataLocalLow%\{Random characters}-shm
      • %AppDataLocalLow%\{Random characters}-wal
      • %AppDataLocalLow%\{Random characters}
      • %AppDataLocalLow%\{Random characters}.dll
      • %AppDataLocalLow%\{Random characters}.zip
      • %AppDataLocalLow%\{Random characters}\{Random characters}.zip
      • %AppDataLocalLow%\{Random characters}\AccessibleHandler.dll
      • %AppDataLocalLow%\{Random characters}\AccessibleMarshal.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-file-l1-2-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-file-l2-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-handle-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-heap-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-interlocked-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-libraryloader-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-localization-l1-2-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-memory-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-namedpipe-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processenvironment-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processthreads-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-processthreads-l1-1-1.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-profile-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-rtlsupport-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-string-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-synch-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-synch-l1-2-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-sysinfo-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-timezone-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-core-util-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-conio-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-convert-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-environment-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-filesystem-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-heap-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-locale-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-math-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-multibyte-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-private-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-process-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-runtime-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-stdio-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-string-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-time-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\api-ms-win-crt-utility-l1-1-0.dll
      • %AppDataLocalLow%\{Random characters}\breakpadinjector.dll
      • %AppDataLocalLow%\{Random characters}\freebl3.dll
      • %AppDataLocalLow%\{Random characters}\IA2Marshal.dll
      • %AppDataLocalLow%\{Random characters}\ldap60.dll
      • %AppDataLocalLow%\{Random characters}\ldif60.dll
      • %AppDataLocalLow%\{Random characters}\lgpllibs.dll
      • %AppDataLocalLow%\{Random characters}\libEGL.dll
      • %AppDataLocalLow%\{Random characters}\MapiProxy_InUse.dll
      • %AppDataLocalLow%\{Random characters}\MapiProxy.dll
      • %AppDataLocalLow%\{Random characters}\mozglue.dll
      • %AppDataLocalLow%\{Random characters}\mozMapi32_InUse.dll
      • %AppDataLocalLow%\{Random characters}\mozMapi32.dll
      • %AppDataLocalLow%\{Random characters}\msvcp140.dll
      • %AppDataLocalLow%\{Random characters}\nss3.dll
      • %AppDataLocalLow%\{Random characters}\nssckbi.dll
      • %AppDataLocalLow%\{Random characters}\nssdbm3.dll
      • %AppDataLocalLow%\{Random characters}\prldap60.dll
      • %AppDataLocalLow%\{Random characters}\qipcap.dll
      • %AppDataLocalLow%\{Random characters}\softokn3.dll
      • %AppDataLocalLow%\{Random characters}\ucrtbase.dll
      • %AppDataLocalLow%\{Random characters}\vcruntime140.dll
      • %Application Data%\Microsoft\Network\sqlcmd.exe
      • %User Temp%\{Random characters}.exe

    • Step 7

    Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como Trojan.Win32.STOP.EG 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.


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