Analysis by: Rhena Inocencio
 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

Infection Channel: Dropped by other malware

This Trojan may be dropped by other malware.

It is a component of other malware.

  TECHNICAL DETAILS

File Size: 708 bytes
Initial Samples Received Date: 10 Apr 2013

Arrival Details

This Trojan may be dropped by the following malware:

Installation

This Trojan is a component of other malware.

Other Details

This Trojan opens the following files:

  • {removable drive letter}:\~$WHN.NFC - TROJ_GAMARUE.DA
    • LNK Target: %System%\rundll32.exe ~$WHN.NFC,crys lnqhjmdfizbeuxaqsvmoriknex euyaz

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

NOTES:

This is a Trend Micro detection for shortcut files (.LNK) used as a component by GAMARUE malware family.

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 9.848.05
FIRST VSAPI PATTERN DATE: 10 Apr 2013
VSAPI OPR PATTERN File: 9.849.00
VSAPI OPR PATTERN Date: 11 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 file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • {removable drive letter}:\~$WHN.NFC - TROJ_GAMARUE.DA

Step 3

Scan your computer with your Trend Micro product to delete files detected as LNK_GAMARUE.DA. 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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