Analysis by: Paul Steven Nadera
ALIASES:

Trojan:JS/CoinHive.A (Microsoft)

 PLATFORM:

Windows, Android, IOS

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Canal de infección Downloaded from the Internet

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

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

It redirects browsers to certain sites.

  TECHNICAL DETAILS

Tamaño del archivo 13,110 bytes
Tipo de archivo HTML, HTM
Residente en memoria No
Fecha de recepción de las muestras iniciales 03 May 2020
Carga útil Displays message/message boxes

Arrival Details

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

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Rootkit Capabilities

This Trojan does not have rootkit capabilities.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan redirects browsers to the following sites:

  • If browser language starts with "ja11111111":
    • http://www.{BLOCKED}omo-urt.com
  • If it is running on IOS:
    • If browser language starts with "ko":
      • http://security2.{BLOCKED}e.com
    • If browser language starts with "ja":
      • http://security1.{BLOCKED}e.com
    • If browser language starts with "zh-tw":
      • http://security.{BLOCKED}e.com
    • If browser language starts with "en":
      • http://security1.{BLOCKED}e.com
    • If browser language starts with "bg":
      • http://security1.{BLOCKED}e.com
  • If it is running on Android:
    • http://{current hostname}/chrome{number}.{number}.{number}.apk where {number} is a random number from 1-10

It does not exploit any vulnerability.

NOTES:

It does the following:

  • It displays the following fake alerts in different languages depending on the browser language before redirecting to another website:
    • If running on Android:
    • If running on IOS:

  SOLUTION

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 15.878.04
Primera fecha de publicación de patrones de VSAPI 19 May 2020
Versión de patrones OPR de VSAPI 15.879.00
Fecha de publicación de patrones OPR de VSAPI 20 May 2020

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.JS.XLOADER.AA. 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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