Analysis 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

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

Tipo de compactação: 68,096 bytes
Tipo de arquivo: DLL
Residente na memória: Yes
Data de recebimento das amostras iniciais: 22 Mar 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.

Autostart Technique

This Trojan adds the following registry keys to install itself as a Browser Helper Object (BHO):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{10E1725C-7237-41A9-954A-04DCCB1FD16C}

Other System Modifications

This Trojan adds the following registry keys as part of its installation routine:

HKEY_CLASSES_ROOT\BhoPlugin.EyeOnIE

HKEY_CLASSES_ROOT\BhoPlugin.EyeOnIE.1

HKEY_CLASSES_ROOT\CLSID\{10E1725C-7237-41A9-954A-04DCCB1FD16C}

HKEY_CLASSES_ROOT\Interface\{49859A6F-2284-4F06-9F8E-BFE56B35BA09}

HKEY_CLASSES_ROOT\TypeLib\{3C8BF053-0A65-46FE-A757-2187BD66EF34}

  SOLUTION

Mecanismo de varredura mínima: 9.200
Primeiro arquivo padrão VSAPI: 8.856.03
Data do lançamento do primeiro padrão VSAPI: 22 Mar 2012
VSAPI OPR Pattern Version: 8.857.00
VSAPI OPR Pattern veröffentlicht am: 23 Mar 2012

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

Scan your computer with your Trend Micro product and note files detected as TROJ_DLOADR.LFR

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Delete these Browser Helper Object (BHO) registry keys

[ Learn More ]
{Malware Path and File Name}

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DLOADR.LFR. 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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