Backdoor.Win64.BADIIS.B

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%\TS_7E49.tmp → 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 hardcoded password on the following headers to proceed to its backdoor routine:
  • If-Match-Pord
• It checks the following headers for the backdoor commands:
  • If-Modified-Match
• It interprets the following messages as its backdoor commands:
  • TMC/ - Execute shell command via cmd.exe
• TMP/ - Dumps the file content into a file with the specified name
• TMI/ - Injects code to legitimate %System%\credwiz.exe
• TMD/ - Read 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).