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TROJ_VUNDO.HWB

November 30, 2012
 ALIASES:

VirTool:Win32/DelfInject.gen!T (Microsoft); [001db6f0.EXE]:BackDoor-DOQ.gen.w, [001d7cf0.EXE]:BackDoor-DOQ.gen.w, [0019df38.EXE]:BackDoor-DOQ.ge (McAfee); Trojan Horse (Symantec); Trojan.Win32.Genome.garo (Kaspersky); BehavesLike.Win32.Malware.bsm (vs) (Sunbelt); Virtool.25201 (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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

  TECHNICAL DETAILS

File Size:

1,600,512 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

30 Nov 2012

Arrival Details

This Trojan 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 Trojan creates the following folders:

  • %System Root%\Language
  • %System Root%\Icons

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Dropping Routine

This Trojan drops the following files:

  • %System Root%\Settings.ini
  • %System Root%\connect.wav
  • %System Root%\Language\Português.ini
  • %System Root%\Icons\Default.ico

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

Search and delete these components

[ Learn More ]
There may be some components 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.
  • %System Root%\Settings.ini
  • %System Root%\connect.wav
  • %System Root%\Language\Português.ini
  • %System Root%\Icons\Default.ico

Step 3

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.
  • %System Root%\Language
  • %System Root%\Icons

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_VUNDO.HWB. 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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