Analysis by: Christian Noel Olalia
ALIASES:

Application.CoinMiner.AY (BITDEFENDER)

 PLATFORM:

Windows

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

  • Threat Type: Coinminer

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Coinminer may be hosted on a website and run when a user accesses the said website.

It does not have any propagation routine.

It does not have any backdoor routine.

This malicious script runs on web browsers, which may be installed on any operating system.

  TECHNICAL DETAILS

File Size: 9,013 bytes
File Type: HTML, HTM
Memory Resident: No
Initial Samples Received Date: 19 Jan 2018

Arrival Details

This Coinminer may be hosted on a website and run when a user accesses the said website.

Propagation

This Coinminer does not have any propagation routine.

Backdoor Routine

This Coinminer does not have any backdoor routine.

Other Details

This Coinminer does the following:

  • Connects to the following URL to mine cryptocurrency:
    • https://{BLOCKED}ve.com/lib/{BLOCKED}ve.min.js/
  • It has the following start mode:
    • IF_EXCLUSIVE_TAB ? The miner will only start if no other tabs are already mining.

This malicious script runs on web browsers, which may be installed on any operating system.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.208.05
FIRST VSAPI PATTERN DATE: 23 Apr 2018
VSAPI OPR PATTERN File: 14.209.00
VSAPI OPR PATTERN Date: 24 Apr 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_WEBXMR.AUSNP-HTML. 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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