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TROJ_BHO.DEE

October 08, 2012
 Modified by: Michael Cabel
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

However, as of this writing, the said sites are inaccessible.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size:

266,240 bytes

File Type:

PE

Memory Resident:

No

Initial Samples Received Date:

21 Dec 2009

Installation

This Trojan drops the following component file(s):

  • %System%\eventcls32.dll - detected as TROJ_LAMEWAR.VTG

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It drops the following non-malicious file:

  • %System%\uPbLa.vbs

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Backdoor Routine

However, as of this writing, the said sites are inaccessible.

Dropping Routine

This Trojan executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

Other Details

This Trojan attempts to access the following websites to download files, which are possibly malicious:

  • http://{BLOCKED}.{BLOCKED}.80.182

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

6.708.04

VSAPI PATTERN Date:

21 Dec 2009

VSAPI PATTERN Date:

12/21/2009 12:00:00 AM

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware files dropped/downloaded by TROJ_BHO.DEE

    •  TROJ_LAMEWAR.VTG

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_BHO.DEE. 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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