Modified by: Adrian Cofreros
ALIASES:

VirTool:Win32/VBInject.AQ (Microsoft)

 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:
 INFORMATION EXPOSURE:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It modifies the Internet Explorer Zone Settings.

  TECHNICAL DETAILS

File Size: 17,493,123 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 13 Aug 2013

Arrival Details

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This worm creates the following folders:

  • %TEMP%\IXP000.TMP
  • %TEMP%\_ir_tmpfnt_1
  • %TEMP%\ir_ext_temp_0

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\RunOnce
wextract_cleanup0 = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\""

Web Browser Home Page and Search Page Modification

This worm modifies the Internet Explorer Zone Settings.

Other Details

This worm connects to the following possibly malicious URL:

  • http://www.{BLOCKED}ith-baby.com/install/test.php

It drops the following file(s)/component(s):

  • %TEMP%\IXP000.TMP\Adobe9proSolutions.exe
  • %TEMP%\IXP000.TMP\test_notpad_DL.exe
  • %TEMP%\_ir_tmpfnt_1\Arial Black_1.TFT
  • %TEMP%\_ir_tmpfnt_1\Arial_1.TFT
  • %TEMP%\_ir_tmpfnt_1\Constantia.TFT
  • %TEMP%\_ir_tmpfnt_1\Verdana_1.TFT
  • %TEMP%\ir_ext_temp_0\AutoPlay\Audio\Click1.ogg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Audio\Glass.ogg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Audio\High1.ogg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Audio\Slapstick.ogg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Audio\loop.ogg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\1_1237.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\48_1237.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\8_1030.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\blue_next1.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\button.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\exit.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Buttons\minimize.btn
  • %TEMP%\ir_ext_temp_0\AutoPlay\Docs\AMTLibWrapper.dll
  • %TEMP%\ir_ext_temp_0\AutoPlay\Docs\Acrobat.dll
  • %TEMP%\ir_ext_temp_0\AutoPlay\Docs\Adobelm.dll
  • %TEMP%\ir_ext_temp_0\AutoPlay\Docs\FormDesigner.exe
  • %TEMP%\ir_ext_temp_0\AutoPlay\Docs\cache.db
  • %TEMP%\ir_ext_temp_0\AutoPlay\Images\BlackMan2.png
  • %TEMP%\ir_ext_temp_0\AutoPlay\Images\Magical Snap - 2008.06.26 18.35 - 001.png
  • %TEMP%\ir_ext_temp_0\AutoPlay\Images\acroba10.jpg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Images\bg.jpg
  • %TEMP%\ir_ext_temp_0\AutoPlay\Images\thumbsup.gif
  • %TEMP%\ir_ext_temp_0\AutoPlay\Plugins\SHAPE\SHAPE.APO
  • %TEMP%\ir_ext_temp_0\AutoPlay\Plugins\SLIDER\SLIDER.APO
  • %TEMP%\ir_ext_temp_0\AutoPlay\Plugins\sb_Charcoal.png
  • %TEMP%\ir_ext_temp_0\AutoPlay\Plugins\sb_WindowsOS.png
  • %TEMP%\ir_ext_temp_0\AutoPlay\autorun.cdd
  • %TEMP%\ir_ext_temp_0\autorun.exe

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 7.974.08
FIRST VSAPI PATTERN DATE: 14 Apr 2011
VSAPI OPR PATTERN File: 7.975.00
VSAPI OPR PATTERN Date: 15 Apr 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

Close all opened browser windows

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
    • wextract_cleanup0 = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\""

Step 4

Search and delete these folders

[ 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.
  • %TEMP%\IXP000.TMP
  • %TEMP%\_ir_tmpfnt_1
  • %TEMP%\ir_ext_temp_0

Step 5

Reset Internet security settings

[ Learn More ]

Step 6

Scan your computer with your Trend Micro product to delete files detected as WORM_INJECT.SMB. 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.


Did this description help? Tell us how we did.