Analysis by: Hazel Ann Poligratis
ALIASES:

W32.SillyFDC (Norton), Troj/Miner-BH (Sophos_Lite)

 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 as a component bundled with malware/grayware packages.

  TECHNICAL DETAILS

File Size: 8,192 bytes
File Type: VBS
Memory Resident: Yes
Initial Samples Received Date: 18 Jul 2018

Arrival Details

This Coinminer arrives as a component bundled with malware/grayware packages.

Installation

This Coinminer drops the following files:

  • %Application Data%\WindowsServices\movemenoreg.vbs (copy of itself)
  • %Application Data%\WindowsServices\installer.vbs (additional component)
  • %Application Data%\WindowsServices\helper.vbs (additional component)
  • %Application Data%\WindowsServices\WindowsServices.exe (missing component/file)

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It creates the following folders:

  • %Application Data%\WindowsServices

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This Coinminer requires the following additional components to properly run:

  • helper.vbs
  • installer.vbs
  • WindowsServices.exe

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.388.06
FIRST VSAPI PATTERN DATE: 18 Jul 2018
VSAPI OPR PATTERN File: 14.389.00
VSAPI OPR PATTERN Date: 19 Jul 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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\WindowsServices

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as COINMINER_MALXMR.TIDBFAP-VBS. 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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