Analysis by: Cris Nowell Pantanilla
 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 as a component bundled with malware/grayware packages.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: 123,392 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 16 May 2012

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{34DA7F9B-501C-431E-B038-3DD499982525}

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CLASSES_ROOT\CLSID\{34DA7F9B-501C-431E-B038-3DD499982525}\
InprocServer32
(Default) = "{malware path and filename}"

Other Details

This Trojan requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 9.114.02
FIRST VSAPI PATTERN DATE: 16 May 2012
VSAPI OPR PATTERN File: 9.115.00
VSAPI OPR PATTERN Date: 17 May 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_AGENT.BCIA

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as TROJ_AGENT.BCIA

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.

Step 5

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_CLASSES_ROOT\CLSID
    • {34DA7F9B-501C-431E-B038-3DD499982525}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
    • {34DA7F9B-501C-431E-B038-3DD499982525}

Step 6

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