Ransom.MSIL.SMINAJ.THCOFBD
UDS:Trojan-Ransom.MSIL.Gen.gen (KASPERSKY)
Windows
Tipo di minaccia informatica:
Ransomware
Distruttivo?:
No
Crittografato?:
No
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.
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 y ejecuta los archivos siguientes:
- %User Temp%\{6 Random Characters}.bat → used to delete the Ransomware sample and this batch file
(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:
- vssadmin.exe Delete Shadows /All /Quiet
- bcdedit.exe /set {default} recoveryenabled No
- bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
- wbadmin DELETE SYSTEMSTATEBACKUP
- wbadmin DELETE sYSTEMSTATEBACKUP-deleteOldest
- wmic.exe SHADOWCOPY /nointeractive
- wevtutil.exe cl "{Logname}" → clears event logs
Lognames:- ACEEventLog
- Application
- HardwareEvents
- Internet Explorer
- Key Management Service
- Media Center
- Microsoft-Windows-API-Tracing/Operational
- Microsoft-Windows-AppID/Operational
- Microsoft-Windows-Application-Experience/Problem-Steps-Recorder
- Microsoft-Windows-Application-Experience/Program-Compatibility-Assistant
- Microsoft-Windows-Application-Experience/Program-Compatibility-Troubleshooter
- Microsoft-Windows-Application-Experience/Program-Inventory
- Microsoft-Windows-Application-Experience/Program-Telemetry
- Microsoft-Windows-AppLocker/EXE and DLL
- Microsoft-Windows-AppLocker/MSI and Script
- Microsoft-Windows-Audio/CaptureMonitor
- Microsoft-Windows-Audio/Operational
- Microsoft-Windows-Authentication User Interface/Operational
- Microsoft-Windows-Backup
- Microsoft-Windows-BitLocker-DrivePreparationTool/Admin
- Microsoft-Windows-BitLocker-DrivePreparationTool/Operational
- Microsoft-Windows-Bits-Client/Operational
- Microsoft-Windows-Bluetooth-MTPEnum/Operational
- Microsoft-Windows-BranchCache/Operational
- Microsoft-Windows-BranchCacheSMB/Operational
- Microsoft-Windows-CodeIntegrity/Operational
- Microsoft-Windows-CorruptedFileRecovery-Client/Operational
- Microsoft-Windows-CorruptedFileRecovery-Server/Operational
- Microsoft-Windows-DateTimeControlPanel/Operational
- Microsoft-Windows-DeviceSync/Operational
- Microsoft-Windows-Dhcp-Client/Admin
- Microsoft-Windows-DhcpNap/Admin
- Microsoft-Windows-Dhcpv6-Client/Admin
- Microsoft-Windows-Diagnosis-DPS/Operational
- Microsoft-Windows-Diagnosis-PCW/Operational
- Microsoft-Windows-Diagnosis-PLA/Operational
- Microsoft-Windows-Diagnosis-Scheduled/Operational
- Microsoft-Windows-Diagnosis-Scripted/Admin
- Microsoft-Windows-Diagnosis-Scripted/Operational
- Microsoft-Windows-Diagnosis-ScriptedDiagnosticsProvider/Operational
- Microsoft-Windows-Diagnostics-Networking/Operational
- Microsoft-Windows-Diagnostics-Performance/Operational
- Microsoft-Windows-DiskDiagnostic/Operational
- Microsoft-Windows-DiskDiagnosticDataCollector/Operational
- Microsoft-Windows-DiskDiagnosticResolver/Operational
- Microsoft-Windows-DriverFrameworks-UserMode/Operational
- Microsoft-Windows-EapHost/Operational
- Microsoft-Windows-EventCollector/Operational
- Microsoft-Windows-Fault-Tolerant-Heap/Operational
- Microsoft-Windows-FMS/Operational
- Microsoft-Windows-Folder Redirection/Operational
- Microsoft-Windows-Forwarding/Operational
- Microsoft-Windows-GroupPolicy/Operational
- Microsoft-Windows-Help/Operational
- Microsoft-Windows-HomeGroup Control Panel/Operational
- Microsoft-Windows-HomeGroup Listener Service/Operational
- Microsoft-Windows-HomeGroup Provider Service/Operational
- Microsoft-Windows-IKE/Operational
- Microsoft-Windows-International/Operational
- Microsoft-Windows-International-RegionalOptionsControlPanel/Operational
- Microsoft-Windows-Iphlpsvc/Operational
- Microsoft-Windows-Kernel-EventTracing/Admin
- Microsoft-Windows-Kernel-Power/Thermal-Operational
- Microsoft-Windows-Kernel-StoreMgr/Operational
- Microsoft-Windows-Kernel-WDI/Operational
- Microsoft-Windows-Kernel-WHEA/Errors
- Microsoft-Windows-Kernel-WHEA/Operational
- Microsoft-Windows-Known Folders API Service
- Microsoft-Windows-LanguagePackSetup/Operational
- Microsoft-Windows-MCT/Operational
- Microsoft-Windows-MemoryDiagnostics-Results/Debug
- Microsoft-Windows-MUI/Admin
- Microsoft-Windows-MUI/Operational
- Microsoft-Windows-NCSI/Operational
- Microsoft-Windows-NetworkAccessProtection/Operational
- Microsoft-Windows-NetworkAccessProtection/WHC
- Microsoft-Windows-NetworkLocationWizard/Operational
- Microsoft-Windows-NetworkProfile/Operational
- Microsoft-Windows-NlaSvc/Operational
- Microsoft-Windows-NTLM/Operational
- Microsoft-Windows-OfflineFiles/Operational
- Microsoft-Windows-ParentalControls/Operational
- Microsoft-Windows-PeopleNearMe/Operational
- Microsoft-Windows-PowerShell/Operational
- Microsoft-Windows-PrintService/Admin
- Microsoft-Windows-ReadyBoost/Operational
- Microsoft-Windows-ReadyBoostDriver/Operational
- Microsoft-Windows-Recovery/Operational
- Microsoft-Windows-ReliabilityAnalysisComponent/Operational
- Microsoft-Windows-RemoteApp and Desktop Connections/Admin
- Microsoft-Windows-RemoteAssistance/Admin
- Microsoft-Windows-RemoteAssistance/Operational
- Microsoft-Windows-Resource-Exhaustion-Detector/Operational
- Microsoft-Windows-Resource-Exhaustion-Resolver/Operational
- Microsoft-Windows-Resource-Leak-Diagnostic/Operational
- Microsoft-Windows-RestartManager/Operational
- Microsoft-Windows-Security-Audit-Configuration-Client/Operational
- Microsoft-Windows-TerminalServices-LocalSessionManager/Admin
- Microsoft-Windows-TerminalServices-LocalSessionManager/Operational
- Microsoft-Windows-TerminalServices-PnPDevices/Admin
- Microsoft-Windows-TerminalServices-PnPDevices/Operational
- Microsoft-Windows-TerminalServices-RDPClient/Operational
- Microsoft-Windows-TerminalServices-RemoteConnectionManager/Admin
- Microsoft-Windows-TerminalServices-RemoteConnectionManager/Operational
- Microsoft-Windows-TZUtil/Operational
- Microsoft-Windows-UAC/Operational
- Microsoft-Windows-UAC-FileVirtualization/Operational
- Microsoft-Windows-User Profile Service/Operational
- Microsoft-Windows-VDRVROOT/Operational
- Microsoft-Windows-VHDMP/Operational
- Microsoft-Windows-WER-Diag/Operational
- Microsoft-Windows-WFP/Operational
- Microsoft-Windows-Windows Defender/Operational
- Microsoft-Windows-Windows Defender/WHC
- Microsoft-Windows-Windows Firewall With Advanced Security/ConnectionSecurity
- Microsoft-Windows-Windows Firewall With Advanced Security/Firewall
- Microsoft-Windows-WindowsBackup/ActionCenter
- Microsoft-Windows-WindowsSystemAssessmentTool/Operational
- Microsoft-Windows-WindowsUpdateClient/Operational
- Microsoft-Windows-Winlogon/Operational
- Microsoft-Windows-WinRM/Operational
- Microsoft-Windows-Winsock-WS2HELP/Operational
- Microsoft-Windows-Wired-AutoConfig/Operational
- Microsoft-Windows-WLAN-AutoConfig/Operational
- Microsoft-Windows-WPD-ClassInstaller/Operational
- Microsoft-Windows-WPD-CompositeClassDriver/Operational
- Microsoft-Windows-WPD-MTPClassDriver/Operational
- ODiag
- OSession
- Security
- Setup
- System
- Windows PowerShell
Crea las carpetas siguientes:
- %Public%\Windows\Ui
Finalización del proceso
Finaliza los procesos siguientes si detecta que se ejecutan en la memoria del sistema afectado:
- postg
- mysql
- sqls
- sqlw
- onenote
- outlook
- exchange
- visio
- oracle
- powerpnt
- mydesk
- excel
- word
- vivo
Soluzioni
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
Buscar y eliminar este archivo
- %User Temp%\{6 Random Characters}.bat
- %Public%\Windows\Ui\un-lock your files.html
- %User Startup%\un-lock your files.html
- %Desktop%\un-lock your files.html
- %Start Menu%\un-lock your files.html
- {Encrypted Drive}:\un-lock your files.html
Step 5
Buscar y eliminar estas carpetas
- %Public%\Windows\Ui
Step 6
Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Ransom.MSIL.SMINAJ.THCOFBD 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