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Coinminer.Win64.MALBTC.AMF

May 02, 2019
 Modified by: Maureen Reyes
 ALIASES:

Trojan:Win32/CoinMiner.C!cl (Microsoft), Trojan.Win32.Miner.vqhy (Kaspersky)

 PLATFORM:

Windows

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

  • Threat Type: Coinminer

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

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.

  TECHNICAL DETAILS

File Size:

241,304 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

01 May 2019

Payload:

Connects to URLs/IPs

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.

Installation

This Coinminer adds the following mutexes to ensure that only one of its copies runs at any one time:

  • 8622804042

Other Details

This Coinminer does the following:

  • Connects to the following URL as part of its coin mining routine:
    {BLOCKED}.{BLOCKED}.56.161:443
    {BLOCKED}.{BLOCKED}.133.232:80
    {BLOCKED}.{BLOCKED}.56.161:21
    {BLOCKED}.{BLOCKED}.133.232:20
    {BLOCKED}.{BLOCKED}.56.161:53
    {BLOCKED}.{BLOCKED}.133.232:53
    {BLOCKED}.{BLOCKED}.56.161:162
    {BLOCKED}.{BLOCKED}.133.232:161
    {BLOCKED}.{BLOCKED}.56.161:990
    {BLOCKED}.{BLOCKED}.133.232:989
    {BLOCKED}.{BLOCKED}.56.161:1111
    {BLOCKED}.{BLOCKED}.133.232:1111
    {BLOCKED}.{BLOCKED}.56.161:2222
    {BLOCKED}.{BLOCKED}.133.232:2222
    {BLOCKED}.{BLOCKED}.56.161:3333
    {BLOCKED}.{BLOCKED}.133.232:3333
    {BLOCKED}.{BLOCKED}.56.161:4444
    {BLOCKED}.{BLOCKED}.133.232:4444
    {BLOCKED}.{BLOCKED}.56.161:8181
    {BLOCKED}.{BLOCKED}.133.232:8080
    {BLOCKED}.{BLOCKED}.56.161:25200
    {BLOCKED}.{BLOCKED}.133.232:25400
  • It uses the following details on its coin mining routine:
    Algorithm: cryptonight
    User: Windows
    Password: x
  • Attempts to gather CPU Information

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.972.04

FIRST VSAPI PATTERN DATE:

01 May 2019

VSAPI OPR PATTERN File:

14.973.00

VSAPI OPR PATTERN Date:

02 May 2019

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 Coinminer.Win64.MALBTC.AMF. 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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