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Threat Encyclopedia

TROJ_GORIADU.SMZ

ANALYSIS BY

jasperm


PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW


This Trojan is an installer of a file that poses as a legitimate media player application

This Trojan may be dropped by other malware.

It attempts to access certain websites. However, the websites are inaccessible as of this writing.

TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

24 Jan 2011

Payload:

Connects to URLs/Ips

Arrival Details

This Trojan may be dropped by the following malware:

  • TROJ_FKEPLAYR.CH

Installation

This Trojan drops the following component file(s):

  • %User Profile%\Start Menu\Programs\BoHu¸ßÇåÓ°Òô\BoHu¸ßÇåÓ°Òô.lnk
  • %User Profile%\Start Menu\Programs\BoHu¸ßÇåÓ°Òô\жÔØBoHu¸ßÇåÓ°Òô.lnk
  • %Program Files%\BoHu¸ßÇåÓ°Òô\UUPlayer.exe
  • %Program Files%\BoHu¸ßÇåÓ°Òô\loading.gif
  • %Program Files%\BoHu¸ßÇåÓ°Òô\main.ini
  • %Program Files%\BoHu¸ßÇåÓ°Òô\uninst.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

It creates the following folders:

  • %User Profile%\Start Menu\Programs\BoHu¸ßÇåÓ°Òô
  • %Program Files%\BoHu¸ßÇåÓ°Òô

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Other Details

This Trojan attempts to access certain websites. However, the websites are inaccessible as of this writing.

It connects to the following possibly malicious URL:

  • http://uu.{BLOCKED}v.net/index.htm

It does the following:

  • It functions as an installer of a file that poses as a legitimate media player application.

SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.793.80

VSAPI PATTERN Date:

25 Jan 2011

VSAPI PATTERN Date:

1/25/2011 12:00:00 AM

FIRST VSAPI PATTERN FILE:

7.792.09

FIRST VSAPI PATTERN DATE:

25 Jan 2011

VSAPI OPR PATTERN File:

7.793.00

VSAPI OPR PATTERN Date:

25 Jan 2011

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

Identify and terminate files detected as TROJ_GORIADU.SMZ

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

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.
  • %User Profile%\Start Menu\Programs\BoHu¸ßÇåÓ°Òô
  • %Program Files%\BoHu¸ßÇåÓ°Òô

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_GORIADU.SMZ. 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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