PUA.Win32.Koal.AZ
Riskware/Koal (FORTINET); a variant of Win32/Koal.A (NOD32)
Windows
Tipo di minaccia informatica:
Potentially Unwanted Application
Distruttivo?:
No
Crittografato?:
Sì
In the wild::
Sì
Panoramica e descrizione
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Este malware no tiene ninguna rutina de propagación.
Este malware no tiene ninguna rutina de puerta trasera.
Este malware no tiene ninguna capacidad para robar información.
Dettagli tecnici
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:
- %Application Data%\configtools.log → contains logs of process done
- %Application Data%\configtools.dat → contains base64-encoded %System%\KoalCspWrapper.ocx file, and added trusted sites and certificates
- %System%\KoalCspWrapper.ocx
(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.).
. %System% es la carpeta del sistema de Windows, que en el caso de Windows 98 y ME suele estar en C:\Windows\System, en el caso de Windows NT y 2000 en C:\WINNT\System32 y en el caso de Windows 2000(32-bit), XP, Server 2003(32-bit), Vista, 7, 8, 8.1, 2008(64-bit), 2012(64bit) y 10(64-bit) en C:\Windows\System32).)Técnica de inicio automático
Agrega las siguientes entradas de registro para permitir su ejecución automática cada vez que se inicia el sistema:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-4}\InprocServer32
(Default) = %System%\KOALCS~1.OCX
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\InprocServer32
(Default) = %System%\KOALCS~1.OCX
Otras modificaciones del sistema
Agrega las siguientes entradas de registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0
(Default) = KoalCspWrapper ActiveX Control module
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
FLAGS
(Default) = 2
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
0\win32
(Default) = %System%\KoalCspWrapper.ocx
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}
(Default) = _DKoalCspWrapper
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\ProxyStubClsid
(Default) = {Proxy Stub ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\ProxyStubClsid32
(Default) = {Proxy Stub ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\TypeLib
(Default) = {Generated ID-1}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\TypeLib
Version = 1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-3}
(Default) = _DKoalCspWrapperEvents
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-3}\ProxyStubClsid
(Default) = {Proxy Stub ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-3}\ProxyStubClsid32
(Default) = {Proxy Stub ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-3}\TypeLib
(Default) = {Generated ID-1}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-3}\TypeLib
Version = 1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-4}
(Default) = KoalCspWrapper Property Page
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-4}\InprocServer32
(Default) = %System%\KOALCS~1.OCX
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
KoalEAClient.CspWrapper.1
(Default) = KoalCspWrapper Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
KoalEAClient.CspWrapper.1\CLSID
(Default) = {Generated ID-5}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}
(Default) = KoalCspWrapper Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\ProgID
(Default) = KoalEAClient.CspWrapper.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\ToolboxBitmap32
(Default) = %System%\KOALCS~1.OCX, 1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\MiscStatus
(Default) = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\MiscStatus\
1
(Default) = 131473
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\TypeLib
(Default) = {Generated ID-1}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\Version
(Default) = 1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\InprocServer32
ThreadingModel = Apartment
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Component Categories\{ID}
409 = Controls safely initializable from persistent data!
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Component Categories\{ID}
409 = Controls safely scriptable!
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\ROOT\Certificates\
b26fa75369d6fd879204d8e67fcc105ef35fcd84
Blob = {Blob data}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\CA\Certificates\
d2ea461e09eeb661f39dd88f63b2d1b592a7d341
Blob = {Blob data}
Propagación
Este malware no tiene ninguna rutina de propagación.
Rutina de puerta trasera
Este malware no tiene ninguna rutina de puerta trasera.
Robo de información
Este malware no tiene ninguna capacidad para robar información.
Otros detalles
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{Generated ID-1}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{Generated ID-2}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-4}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-4}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
KoalEAClient.CspWrapper.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
KoalEAClient.CspWrapper.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\ToolboxBitmap32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\MiscStatus
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\MiscStatus\
1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\Version
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\Implemented Categories
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-5}\Implemented Categories\
{ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-6}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-6}\Implemented Categories
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{Generated ID-6}\Implemented Categories\
{ID}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\ROOT\Certificates\
b26fa75369d6fd879204d8e67fcc105ef35fcd84
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
SystemCertificates\CA\Certificates\
d2ea461e09eeb661f39dd88f63b2d1b592a7d341
Muestra las imágenes siguientes:
Hace lo siguiente:
- It adds the following sites to the system's trusted sites:
- http://{BLOCKED}.{BLOCKED}.156.9
- http://{Any subdomain}.{BLOCKED}.gov.cn
- https://ytb.{BLOCKED}.gov.cn
- It installs the following certificates in the system:
- [Trusted Root Certification Authorities]
Issued by: NBSROOT
Issued to: NBSROOT
Thumbprint: b26fa75369d6fd879204d8e67fcc105ef35fcd84 - [Intermediate Certification Authorities]
Issued by: NBSROOT
Issued to: AHCA
Thumbprint: d2ea461e09eeb661f39dd88f63b2d1b592a7d341
- [Trusted Root Certification Authorities]
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 2
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 3
Reiniciar en modo seguro
Step 4
Eliminar este valor del Registro
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\SOFTWARE\Classes\TypeLib\{Generated ID-1}\1.0
- (Default) = KoalCspWrapper ActiveX Control module
- (Default) = KoalCspWrapper ActiveX Control module
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{Generated ID-1}\1.0\FLAGS
- (Default) = 2
- (Default) = 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{Generated ID-1}\1.0\0\win32
- (Default) = %System%\KoalCspWrapper.ocx
- (Default) = %System%\KoalCspWrapper.ocx
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-2}
- (Default) = _DKoalCspWrapper
- (Default) = _DKoalCspWrapper
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-2}\ProxyStubClsid
- (Default) = {Proxy Stub ID}
- (Default) = {Proxy Stub ID}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-2}\ProxyStubClsid32
- (Default) = {Proxy Stub ID}
- (Default) = {Proxy Stub ID}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-2}\TypeLib
- (Default) = {Generated ID-1}
- (Default) = {Generated ID-1}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-2}\TypeLib
- Version = 1.0
- Version = 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-3}
- (Default) = _DKoalCspWrapperEvents
- (Default) = _DKoalCspWrapperEvents
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-3}\ProxyStubClsid
- (Default) = {Proxy Stub ID}
- (Default) = {Proxy Stub ID}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-3}\ProxyStubClsid32
- (Default) = {Proxy Stub ID}
- (Default) = {Proxy Stub ID}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-3}\TypeLib
- (Default) = {Generated ID-1}
- (Default) = {Generated ID-1}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{Generated ID-3}\TypeLib
- Version = 1.0
- Version = 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-4}
- (Default) = KoalCspWrapper Property Page
- (Default) = KoalCspWrapper Property Page
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-4}\InprocServer32
- (Default) = %System%\KOALCS~1.OCX
- (Default) = %System%\KOALCS~1.OCX
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\KoalEAClient.CspWrapper.1
- (Default) = KoalCspWrapper Control
- (Default) = KoalCspWrapper Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\KoalEAClient.CspWrapper.1\CLSID
- (Default) = {Generated ID-5}
- (Default) = {Generated ID-5}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}
- (Default) = KoalCspWrapper Control
- (Default) = KoalCspWrapper Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\ProgID
- (Default) = KoalEAClient.CspWrapper.1
- (Default) = KoalEAClient.CspWrapper.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\ToolboxBitmap32
- (Default) = %System%\KOALCS~1.OCX, 1
- (Default) = %System%\KOALCS~1.OCX, 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\MiscStatus
- (Default) = 0
- (Default) = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\MiscStatus\1
- (Default) = 131473
- (Default) = 131473
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\TypeLib
- (Default) = {Generated ID-1}
- (Default) = {Generated ID-1}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\Version
- (Default) = 1.0
- (Default) = 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\InprocServer32
- ThreadingModel = Apartment
- ThreadingModel = Apartment
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Component Categories\{ID}
- 409 = Controls safely initializable from persistent data!
- 409 = Controls safely initializable from persistent data!
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Component Categories\{ID}
- 409 = Controls safely scriptable!
- 409 = Controls safely scriptable!
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\b26fa75369d6fd879204d8e67fcc105ef35fcd84
- Blob = {Blob data}
- Blob = {Blob data}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates\d2ea461e09eeb661f39dd88f63b2d1b592a7d341
- Blob = {Blob data}
- Blob = {Blob data}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-4}\InprocServer32
- (Default) = %System%\KOALCS~1.OCX
- (Default) = %System%\KOALCS~1.OCX
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{Generated ID-5}\InprocServer32
- (Default) = %System%\KOALCS~1.OCX
- (Default) = %System%\KOALCS~1.OCX
Step 5
Eliminar esta clave del Registro
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\SOFTWARE\Classes\TypeLib
- {Generated ID-1}
- {Generated ID-1}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {Generated ID-2}
- {Generated ID-2}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {Generated ID-4}
- {Generated ID-4}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {Generated ID-5}
- {Generated ID-5}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- KoalEAClient.CspWrapper.1
- KoalEAClient.CspWrapper.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {Generated ID-6}
- {Generated ID-6}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates
- b26fa75369d6fd879204d8e67fcc105ef35fcd84
- b26fa75369d6fd879204d8e67fcc105ef35fcd84
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\CA\Certificates
- d2ea461e09eeb661f39dd88f63b2d1b592a7d341
- d2ea461e09eeb661f39dd88f63b2d1b592a7d341
Step 6
Buscar y eliminar estos archivos
- %Application Data%\configtools.log
- %Application Data%\configtools.dat
- %System%\KoalCspWrapper.ocx
- %Application Data%\configtools.log
- %Application Data%\configtools.dat
- %System%\KoalCspWrapper.ocx
Step 7
Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como PUA.Win32.Koal.AZ 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