PUA.Win32.TaskbarSys.A
Windows
Threat Type:
Potentially Unwanted Application
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
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
Agrega las carpetas siguientes:
- %AppDataLocal%\Programs\Taskbar system
- %AppDataLocal%\Programs\Taskbar system\countly
- %AppDataLocal%\TaskbarSystem
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}
- %Programs%\Taskbar system
- %User Temp%\is-{random}.tmp
(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).
)Infiltra los archivos siguientes:
- %AppDataLocal%\Programs\Taskbar system\AsyncBridge.Net35.dll
- %AppDataLocal%\Programs\Taskbar system\Countly.dll
- %AppDataLocal%\Programs\Taskbar system\Newtonsoft.Json.dll
- %AppDataLocal%\Programs\Taskbar system\SharpRaven.dll
- %AppDataLocal%\Programs\Taskbar system\System.Threading.dll
- %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe.config
- %AppDataLocal%\Programs\Taskbar system\countly\device.xml
- %AppDataLocal%\Programs\Taskbar system\countly\sessions.xml
- %AppDataLocal%\Programs\Taskbar system\countly\sessions.xml
- %AppDataLocal%\Programs\Taskbar system\countly\userdetails.xml
- %AppDataLocal%\Programs\Taskbar system\sdk.dll
- %AppDataLocal%\Programs\Taskbar system\unins000.dat
- %AppDataLocal%\Programs\Taskbar system\unins000.dat
- %AppDataLocal%\Programs\Taskbar system\unins000.exe
- %AppDataLocal%\Programs\Taskbar system\unins000.msg
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\user.config
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\{random}.newcfg
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\{random}.tmp
- %User Temp%\Cab{random}.tmp
- %User Temp%\Tar{random}.tmp
- %User Temp%\is-{random}.tmp\{malware name}.tmp
- %Programs%\Taskbar system\Taskbar system.lnk
(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).
)Agrega los procesos siguientes:
- "%User Temp%\{malware name}.tmp" /SL5="{random},{malware path and name}"
- "%AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe"
(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).
)Otras modificaciones del sistema
Agrega las siguientes entradas de registro:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Taskbar system = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Inno Setup: Setup Version = 6.0.4 (u)
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Inno Setup: App Path = %AppDataLocal%\Programs\Taskbar system
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
InstallLocation = %AppDataLocal%\Programs\Taskbar system\
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Inno Setup: Icon Group = Taskbar system
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Inno Setup: User = {username}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Inno Setup: Language = {string}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
DisplayName = Taskbar system version 1.0.2.3
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
DisplayIcon = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
UninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
QuietUninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe" /SILENT
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
DisplayVersion = 1.0.2.3
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Publisher = Taskbar system
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
NoModify = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
NoRepair = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
InstallDate = {YYYYMMDD}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
MajorVersion = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
MinorVersion = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
VersionMajor = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
VersionMinor = {value}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
EstimatedSize = {value}
Otros detalles
Agrega las siguientes entradas de registro como parte de la rutina de instalación:
HKEY_CURRENT_USER\Software\AdjustTask
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
It connects to the following possibly malicious URL:
- https://stats.{BLOCKED}rsystem.com/
- https://update.{BLOCKED}rsystem.com/
Hace lo siguiente:
- Installation folder can be changed. The following is the default used:
- %AppDataLocal%\Programs\Taskbar system
SOLUTION
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Taskbar system = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- Taskbar system = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Inno Setup: Setup Version = 6.0.4 (u)
- Inno Setup: Setup Version = 6.0.4 (u)
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Inno Setup: App Path = %AppDataLocal%\Programs\Taskbar system
- Inno Setup: App Path = %AppDataLocal%\Programs\Taskbar system
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- InstallLocation = %AppDataLocal%\Programs\Taskbar system\
- InstallLocation = %AppDataLocal%\Programs\Taskbar system\
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Inno Setup: Icon Group = Taskbar system
- Inno Setup: Icon Group = Taskbar system
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Inno Setup: User = {username}
- Inno Setup: User = {username}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Inno Setup: Language = {string}
- Inno Setup: Language = {string}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- DisplayName = Taskbar system version 1.0.2.3
- DisplayName = Taskbar system version 1.0.2.3
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- DisplayIcon = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- DisplayIcon = %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- UninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe"
- UninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- QuietUninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe" /SILENT
- QuietUninstallString = "%AppDataLocal%\Programs\Taskbar system\unins000.exe" /SILENT
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- DisplayVersion = 1.0.2.3
- DisplayVersion = 1.0.2.3
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- Publisher = Taskbar system
- Publisher = Taskbar system
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- NoModify = {value}
- NoModify = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- NoRepair = {value}
- NoRepair = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- InstallDate = {YYYYMMDD}
- InstallDate = {YYYYMMDD}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- MajorVersion = {value}
- MajorVersion = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- MinorVersion = {value}
- MinorVersion = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- VersionMajor = {value}
- VersionMajor = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- VersionMinor = {value}
- VersionMinor = {value}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
- EstimatedSize = {value}
- EstimatedSize = {value}
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.
- HKEY_CURRENT_USER\Software\AdjustTask
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\{C40E1200-5BEC-410C-B3C5-F7B475729D42}_is1
Step 6
Buscar y eliminar este archivo
- %AppDataLocal%\Programs\Taskbar system\AsyncBridge.Net35.dll
- %AppDataLocal%\Programs\Taskbar system\Countly.dll
- %AppDataLocal%\Programs\Taskbar system\Newtonsoft.Json.dll
- %AppDataLocal%\Programs\Taskbar system\SharpRaven.dll
- %AppDataLocal%\Programs\Taskbar system\System.Threading.dll
- %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe
- %AppDataLocal%\Programs\Taskbar system\TaskbarSystem.exe.config
- %AppDataLocal%\Programs\Taskbar system\countly\device.xml
- %AppDataLocal%\Programs\Taskbar system\countly\sessions.xml
- %AppDataLocal%\Programs\Taskbar system\countly\sessions.xml
- %AppDataLocal%\Programs\Taskbar system\countly\userdetails.xml
- %AppDataLocal%\Programs\Taskbar system\sdk.dll
- %AppDataLocal%\Programs\Taskbar system\unins000.dat
- %AppDataLocal%\Programs\Taskbar system\unins000.dat
- %AppDataLocal%\Programs\Taskbar system\unins000.exe
- %AppDataLocal%\Programs\Taskbar system\unins000.msg
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\user.config
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\{random}.newcfg
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}\1.0.2.3\{random}.tmp
- %User Temp%\Cab{random}.tmp
- %User Temp%\Tar{random}.tmp
- %User Temp%\is-{random}.tmp\{malware name}.tmp
- %Programs%\Taskbar system\Taskbar system.lnk
Step 7
Buscar y eliminar esta carpeta
- %AppDataLocal%\Programs\Taskbar system
- %AppDataLocal%\Programs\Taskbar system\countly
- %AppDataLocal%\TaskbarSystem
- %AppDataLocal%\TaskbarSystem\TaskbarSystem.exe_Url_{random}
- %Programs%\Taskbar system
- %User Temp%\is-{random}.tmp
Step 8
Reinicie en modo normal y explore el equipo con su producto de Trend Micro para buscar los archivos identificados como PUA.Win32.TaskbarSys.A 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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