Analysis by: John Kevin Sanchez

ALIASES:

WASM/Cryptonight (McAfee), Riskware/BitCoinMiner93EA (Fortinet), Application.BitCoinMiner.UB (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 arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be hosted on a website and run when a user accesses the said website.

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine. It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency.

  TECHNICAL DETAILS

Tamaño del archivo 31,924 bytes
Tipo de archivo Other
Residente en memoria Yes
Fecha de recepción de las muestras iniciales 14 Oct 2017

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.

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

Other Details

This Coinminer requires being hosted on a web server in order to proceed with its intended routine.

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency. This behavior makes the system run abnormally slow.

  SOLUTION

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 13.952.08
Primera fecha de publicación de patrones de VSAPI 07 Feb 2018
Versión de patrones OPR de VSAPI 13.953.00
Fecha de publicación de patrones OPR de VSAPI 08 Feb 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

Scan your computer with your Trend Micro product to delete files detected as COINMINER_CRYPTONIGHT.SM-WASM. 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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