WORM_ENCMARUE.LJG

June 10, 2013
 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: Worm

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This worm may be downloaded by other malware/grayware from remote sites.

  TECHNICAL DETAILS

File Size:

189,440 bytes

File Type:

Other

Initial Samples Received Date:

28 May 2013

Arrival Details

This worm may be downloaded by the following malware/grayware from remote sites:

  • TROJ_GAMARUE.RMA

It may be downloaded from the following remote site(s):

  • http://{BLOCKED}r.dl.{BLOCKED}forge.net/project/tradingfiles/111/m

NOTES:

This Trojan is an encrypted WORM_GAMARUE.RMA.

This malware is downloaded, decrypted and executed by the component desktop.ini (detected as TROJ_GAMARUE.RMA).

The decrypted copy of this malware is saved as follows:

  • %System Root%\MSI\TrustedInstaller.exe - detected as WORM_GAMARUE.RMA

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.944.08

FIRST VSAPI PATTERN DATE:

28 May 2013

VSAPI OPR PATTERN File:

9.945.00

VSAPI OPR PATTERN Date:

28 May 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

Remove the malware/grayware file that dropped/downloaded WORM_ENCMARUE.LJG

     
    • TROJ_GAMARUE.RMA

Step 3

Remove malware/grayware files dropped/downloaded by WORM_ENCMARUE.LJG

     
    • WORM_GAMARUE.RMA

Step 4

Scan your computer with your Trend Micro product to delete files detected as WORM_ENCMARUE.LJG. 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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