Author: Joachim Suico   
 

Backdoor.Papras!drOL4OQsDeQ (Agnitum); Backdoor.Win32.Papras.wea (Kaspersky); Backdoor:Win32/Vawtrak.F (Microsoft)

 PLATFORM:

Windows

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

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild::
    Yes

  OVERVIEW


  TECHNICAL DETAILS

File size: 303,104 bytes
File type: DLL
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 15 kwietnia 2015

Instalación

Crea las siguientes copias de sí mismo en el sistema afectado:

  • %All Users Profile%\Application Data\{random folder name}\{random file name}.{random characters} (Windows XP and below)
  • %ProgramData%\{random folder name}\{random file name}.{random characters} (Windows Vista and above)
  • %All Users Profile%\{random folder name}\{random file name}.{random characters} (Windows Vista and above)

Técnica de inicio automático

Agrega las siguientes entradas de registro para permitir su ejecución automática cada vez que se inicia el sistema:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random characters} = "regsvr32.exe "%All Users Profile%\Application Data\{random folder name}\{random file name}.{random characters}"" (Windows XP and below)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random characters} = "regsvr32.exe "%ProgramData%\{random folder name}\{random file name}.{random characters}"" (Windows Vista and above)

Otras modificaciones del sistema

Agrega las siguientes entradas de registro:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
NoProtectedModeBanned = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
TabProcGrowth = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
2500 = "3"