Analisado por: Patrick Angelo Roderno   
 

Linux.Chikdos.B!gen2 (NORTON); Backdoor:Linux/Setag!rfn (MICROSOFT); HEUR:Backdoor.Linux.Ganiw.d (KASPERSKY)

 Plataforma:

Linux

 Classificao do risco total:
 Potencial de dano:
 Potencial de distribui??o:
 infec??o relatada:
 Exposi??o das informa??es:
Baixo
Medium
Alto
°ä°ù¨ª³Ù¾±³¦´Ç

  • Tipo de grayware:
    Backdoor

  • Destrutivo:
    N?o

  • Criptografado:
    N?o

  • In the Wild:
    Sim

  Vis?o geral

Canal de infec??o: Aus dem Internet heruntergeladen, Fallen gelassen von anderer Malware

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

F¨¹hrt Befehle eines externen, b?swilligen Benutzers aus, wodurch das betroffene System gef?hrdet wird.

Verbindet sich mit einer bestimmten Website, um Daten zu versenden und zu empfangen.

  Detalhes t¨¦cnicos

Tipo de compacta??o: 1,223,123 bytes
Tipo de arquivo: ELF
Residente na mem¨®ria: N?o
Data de recebimento das amostras iniciais: 01 novembro 2018
Carga ¨²til: Drops files, Connects to URLs/IPs, Steals information

?bertragungsdetails

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

Installation

Schleust die folgenden Eigenkopien in das betroffene System ein und f¨¹hrt sie aus:

  • /usr/bin/bsd-port/getty

Erstellt die folgenden Ordner:

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

Backdoor-Routine

F¨¹hrt die folgenden Befehle eines externen, b?swilligen Benutzers aus:

  • 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

Einschleusungsroutine

Schleust die folgenden Dateien ein:

  • /usr/bin/bsd-port/getty.lock
  • /tmp/gates.lod
  • /tmp/moni.lod
  • /tmp/notify.file

Datendiebstahl

Folgende Daten werden gesammelt:

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

Andere Details

Verbindet sich mit der folgenden Website, um Daten zu versenden und zu empfangen:

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Es macht Folgendes:

  • capable of updating itself to its latest version
  • replaces the following files with the copy of the malware and stores the original files in /usr/bin/dpkg/:
    • /bin/netstat
    • /bin/lsof
    • /bin/ps
    • /bin/ss
    • /usr/bin/netstat
    • /usr/bin/lsof
    • /usr/bin/ps
    • /usr/bin/ss
    • /usr/sbin/netstat
    • /usr/sbin/lsof
    • /usr/sbin/ps
    • /usr/sbin/ss
  • It adds the following scripts in /etc/rc{1-5}.d/ and /etc/init.d/ to automatically execute itself when the system starts up:
    • /etc/rc{1-5}.d/S97DbSecuritySpt
    • /etc/rc{1-5}.d/S99selinux
    • /etc/init.d/selinux
    • /etc/init.d/DbSecuritySpt

  Solu??o

Mecanismo de varredura m¨ªnima: 9.850
Primeiro arquivo padr?o VSAPI: 14.568.04
Data do lan?amento do primeiro padr?o VSAPI: 16 outubro 2018
VSAPI OPR Pattern Version: 15.237.00
VSAPI OPR Pattern ver?ffentlicht am: 16 julho 2019

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