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HKTL_COINMINE.GH

October 05, 2017
 Analysis by: Oliver Ramirez
 Modified by: Oliver Ramirez
 ALIASES:

Application.BitCoinMiner.SX (BITFENDER)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet

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

  TECHNICAL DETAILS

File Size:

137,881 bytes

File Type:

JS

Memory Resident:

No

Initial Samples Received Date:

21 Sep 2017

Payload:

Connects to URLs/IPs

Arrival Details

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

NOTES:

This JavaScript is embedded into websites to run a coinminer for Monero cryptocurrency miner.

It checks either of the following before it runs its coinminer:

  • WebAssembly
  • asm.js

The script accepts following relevant parameters:

  • Target number of mining threads per tab
  • Throttle rate
  • execution / start - mode
  • Target number of hashes to solve

It can have the following start modes:

  • IF_EXCLUSIVE_TAB
    The miner will only start if no other tabs are already mining.
  • FORCE_EXCLUSIVE_TAB
    The miner will always start and immediately kill all miners in other tabs that have not specified CoinHive.FORCE_MULTI_TAB.
  • FORCE_MULTI_TAB
    The miner will always start.

It has the capability to monitor the following events:

  • open
  • authed
  • close
  • error
  • job
  • found
  • accepted

It sends events and other data to the following URLs:

  • wss://ws001.{BLOCKED}ive.com/proxy
  • wss://ws002.{BLOCKED}ive.com/proxy
  • wss://ws003.{BLOCKED}ive.com/proxy
  • wss://ws004.{BLOCKED}ive.com/proxy
  • wss://ws005.{BLOCKED}ive.com/proxy
  • wss://ws006.{BLOCKED}ive.com/proxy
  • wss://ws007.{BLOCKED}ive.com/proxy
  • wss://ws008.{BLOCKED}ive.com/proxy
  • wss://ws009.{BLOCKED}ive.com/proxy
  • wss://ws009.{BLOCKED}ive.com/proxy
  • wss://ws010.{BLOCKED}ive.com/proxy
  • wss://ws011.{BLOCKED}ive.com/proxy
  • wss://ws012.{BLOCKED}ive.com/proxy
  • wss://ws013.{BLOCKED}ive.com/proxy
  • wss://ws014.{BLOCKED}ive.com/proxy
  • wss://ws015.{BLOCKED}ive.com/proxy
  • wss://ws016.{BLOCKED}ive.com/proxy
  • wss://ws017.{BLOCKED}ive.com/proxy
  • wss://ws018.{BLOCKED}ive.com/proxy
  • wss://ws019.{BLOCKED}ive.com/proxy
  • wss://ws020.{BLOCKED}ive.com/proxy
  • wss://ws021.{BLOCKED}ive.com/proxy
  • wss://ws022.{BLOCKED}ive.com/proxy
  • wss://ws023.{BLOCKED}ive.com/proxy
  • wss://ws024.{BLOCKED}ive.com/proxy
  • wss://ws025.{BLOCKED}ive.com/proxy
  • wss://ws026.{BLOCKED}ive.com/proxy

It implements a system where users has to solve certain number of hashes before proceeding to next website content, which act as an alternative on running ads:



  SOLUTION

Minimum Scan Engine:

9.850

Close all opened browser windows

NOTES:
Scan your computer with your Trend Micro product to delete files detected as MALWARE_NAME. 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 this Knowledge Base page for more information.


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