Backdoor.Win64.BADIIS.A

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.

Instalación

Infiltra los archivos siguientes:

• %Temp%\creds.db → log file of HTTP requests

(Nota: %Temp% es la carpeta de archivos temporales de Windows, que suele estar en C:\Windows\Temp o C:\WINNT\Temp).

Otros detalles

Hace lo siguiente:

• It parses all incoming HTTP requests with the string "password" on its body.
• It checks for a specific password in the following header in order to proceed with its backdoor routine:
  • X-Password
• It checks the following headers to identify the backdoor command to be executed:
  • X-Chrome-Variations
• It interprets the following messages as its backdoor command:
  • CMD| - execute arbitrary command via cmd.exe
  • PIN| - dumps specific content into a file with a specified name
  • INJ| - inject codes to a legitimate %System%\credwiz.exe process executed
  • DMP| - dump the contents of the log file

(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).