TROJ_BEGM.B

 Analysis by: Christopher Daniel So

 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan uses common file icons to trick a user into thinking that the files are legitimate.

It connects to certain URLs. It may do this to remotely inform a malicious user of its installation. It may also do this to download possibly malicious files onto the computer, which puts the computer at a greater risk of infection by other threats.

  TECHNICAL DETAILS

File Size:

1,315,397 bytes

File Type:

EXE

File Compression:

ASProtect

Memory Resident:

Yes

Initial Samples Received Date:

25 Sep 2010

Installation

This Trojan drops the following file(s)/component(s):

  • %User Temp%\E_4\eAPI.fne
  • %User Temp%\E_4\internet.fne
  • %User Temp%\E_4\krnln.fnr
  • %User Temp%\E_4\shell.fne
  • %User Temp%\E_4\sock.fne
  • %User Temp%\E_4\WNet.fne

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It uses common file icons to trick a user into thinking that the files are legitimate.

Download Routine

This Trojan connects to the following malicious URLs:

  • http://{BLOCKED}r.com/rj.txt
  • {BLOCKED}01.3322.org:1887

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.490.10

VSAPI PATTERN Date:

25 Sep 2010

VSAPI PATTERN Date:

9/25/2010 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

Identify and terminate files detected as TROJ_BEGM.B

[ Learn More ]
  1. 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.
  2. 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 these files

[ Learn More ]
There may be some component 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.
  • %User Temp%\E_4\eAPI.fne
  • %User Temp%\E_4\internet.fne
  • %User Temp%\E_4\krnln.fnr
  • %User Temp%\E_4\shell.fne
  • %User Temp%\E_4\sock.fne
  • %User Temp%\E_4\WNet.fne
  • Step 4

    Scan your computer with your Trend Micro product to delete files detected as TROJ_BEGM.B. 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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