Trojan.Win64.BAZARLOADER.FAJG

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

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.

Técnica de inicio automático

Crea las siguientes entradas de registro para activar la ejecución automática del componente infiltrado cada vez que arranque el sistema:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{Random Characters} = "%System%\rundll32.exe\" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} {Third Argument}

Otros detalles

Hace lo siguiente:

• It checks if it is executed with the following arguments:
• If it is executed without argument:
  
  • It adds one of the following process randomly:
    
    • cmd /c timeout /t 6 & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} & exit
    • cmd /c choice /n /c y /d y /t 6 & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} & exit
    • cmd /c timeout 10 /nobreak & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} & exit
    • cmd /c ping 192.0.2.210 -n 8 -i 103 -4 -w 1000 > NUL & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} & exit
• If it is executed with two specified arguments:
  
  • It adds the following process:
    
    • cmd.exe /c reg.exe add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v 0q0ci6sB1gW5cD8sS6T /t REG_SZ /d "\"%System%\rundll32.exe\" \"{Malware Fullpath}\", {Export} {First Argument} {Second Argument} {Third Argument}"
  • It adds one of the following process randomly:
    • cmd /c timeout /t 6 & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} {Third Argument} & exit
    • cmd /c choice /n /c y /d y /t 6 & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} {Third Argument} & exit
    • cmd /c timeout 10 /nobreak & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} {Third Argument} & exit
    • cmd /c ping 192.0.2.210 -n 8 -i 103 -4 -w 1000 > NUL & "%System%\rundll32.exe" "{Malware Fullpath}", {Export} {First Argument} {Second Argument} {Third Argument} & exit
• If it is executed with three specified arguments:
  
  • It adds the following process:
    • cmd.exe /c reg.exe query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths"
    • cmd.exe /c reg.exe query "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\chrome.exe" /v "Path"
    • "%Program Files%\Google\Chrome\Application\chrome.exe" {First Argument} {Second Argument} {Third Argument} {Fourth Argument} "{Malware Fullpath}" "rundll32.exe" {Export}
• It injects malicious code to the added process, chrome.exe. --> will only work if executed on Windows 10

(Nota: %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).