Analysis by: Michael Jhon Ofiaza
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Coinminer

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Canal de infección Dropped by other malware, Downloaded from the Internet

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

It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

Tamaño del archivo 63,525 bytes
Tipo de archivo JS
Residente en memoria No
Fecha de recepción de las muestras iniciales 14 May 2018
Carga útil Connects to URLs/IPs, Steals information

Arrival Details

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

Other Details

This Coinminer connects to the following website to send and receive information:

  • https://{BLOCKED}ystem.space/php3/loginx1.php

It does the following:

  • Steals Facebook login credentials
  • Access victims facebook account
  • Send the Malicious link to facebook friends
  • Post the Malicious link and tag friends, modifies the privacy of the post so everyone can see and unfollow the post so the victim will not be notified.
  • Deletes cookies and recent login traces when the victim logs out.
  • Redirects the victim to a fake youtube page once the link is clicked.
  • Connects to the following URL to mine cryptocurrency:
    • https://cdn.{BLOCKED}erpool.tk/webmr-x7.js
  • Connects to the following URL:
    • https://{BLOCKED}ystem1.space/php3/doms1.php -Link to be send to friends
    • http://{BLOCKED}ystem1.space/php3/sil.php -Link to be send to friends
    • https://{BLOCKED}ystem.space/img22.php
    • https://{BLOCKED}ystem.space/playbutton.png
    • https://{BLOCKED}ystem.space/php3/youtube.php - used in fake youtube page

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 14.250.08
Primera fecha de publicación de patrones de VSAPI 14 May 2018
Versión de patrones OPR de VSAPI 14.251.00
Fecha de publicación de patrones OPR de VSAPI 15 May 2018

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as COINMINER_MALXMR.THDBFAJ-JS. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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