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TROJ_COINMINE.GWS

April 13, 2013
 ALIASES:

Trojan:BAT/Dotimorn.B (Microsoft), RDN/Generic.grp!be (McAfee)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

1,610,119 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

12 Apr 2013

Arrival Details

This Trojan 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 Trojan adds the following folders:

  • %Application Data%\torrent

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It drops the following files:

  • %Application Data%\torrent\alcc.exe
  • %Application Data%\torrent\diablo121016.cl
  • %Application Data%\torrent\diakgcn121016.cl
  • %Application Data%\torrent\libcurl.dll
  • %Application Data%\torrent\libeay32.dll
  • %Application Data%\torrent\libidn-11.dll
  • %Application Data%\torrent\liblnx.cl
  • %Application Data%\torrent\librtmp.dll
  • %Application Data%\torrent\libssh2.dll
  • %Application Data%\torrent\libusb-1.0.dll
  • %Application Data%\torrent\NwTray.exe
  • %Application Data%\torrent\OpenCL.dll
  • %Application Data%\torrent\phatk121016.cl
  • %Application Data%\torrent\poclbm121016.cl
  • %Application Data%\torrent\ssleay32.dll
  • %Application Data%\torrent\zlib1.dll

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.850.05

FIRST VSAPI PATTERN DATE:

12 Apr 2013

VSAPI OPR PATTERN File:

9.851.00

VSAPI OPR PATTERN Date:

12 Apr 2013

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

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%\torrent

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_COINMINE.GWS. 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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