Análisis realizado por : Patrick Angelo Roderno   
 Alias

HEUR:Backdoor.Linux.Ganiw.d (KASPERSKY); Backdoor:Linux/Setag!rfn (MICROSOFT); Linux/Setag.B.Gen trojan (NOD32)

 Plataforma:

Linux

 Riesgo general:
 Potencial de destrucción:
 Potencial de distribución:
 Infección divulgada:
 Revelación de la información:
Bajo
Medio
High
Crítico

  • Tipo de malware
    Backdoor

  • Destructivo?
    No

  • Cifrado
    No

  • In the Wild:
    Sí

  Resumen y descripción

Canal de infección Descargado de Internet, Eliminado por otro tipo de malware

Ejecuta comandos desde un usuario remoto malicioso que pone en peligro el sistema afectado.

Se conecta a determinados sitios Web para enviar y recibir información.

  Detalles técnicos

Tamaño del archivo 1,135,000 bytes
Tipo de archivo ELF
Residente en memoria No
Fecha de recepción de las muestras iniciales 12 de abril de 2018
Carga útil Drops files, Connects to URLs/IPs, Steals information

Instalación

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

  • /usr/bin/bsd-port/knerl

Crea las carpetas siguientes:

  • /usr/bin/dpkgd
  • /usr/bin/bsd-port

Rutina de puerta trasera

Ejecuta los comandos siguientes desde un usuario remoto malicioso:

  • Initiate DDoS attacks:
    • SYN flood
    • DNS flood
    • ICMP flood
    • UDP flood
    • TCP flood
    • TNS poisoning
    • Challenge Collapsar (CC) attack
  • Stop DDoS attack
  • Execute shell commands

Rutina de infiltración

Infiltra los archivos siguientes:

  • /usr/bin/bsd-port/knerl.conf
  • /tmp/notify.file
  • {Malware path}/idus.log
  • {Malware Path}/vga.conf

Robo de información

Recopila los siguientes datos:

  • OS name
  • OS version
  • CPU clock rate
  • CPU usage
  • Number of CPU cores
  • Network usage
  • RAM size
  • IP address of infected machine

Otros detalles

Se conecta al sitio Web siguiente para enviar y recibir información:

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  Soluciones

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 15.236.04
Primera fecha de publicación de patrones de VSAPI 15 de julio de 2019
Versión de patrones OPR de VSAPI 15.237.00
Fecha de publicación de patrones OPR de VSAPI 16 de julio de 2019

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