Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

  TECHNICAL DETAILS

File Size: 589,824 bytes
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 06 Dec 2007

Other System Modifications

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

HKEY_CLASSES_ROOT\Interface\{03022430-ABC4-11D0-BDE2-00AA001A1953}

HKEY_CLASSES_ROOT\TypeLib\{1EA4DBF0-3C3B-11CF-810C-00AA00389B71}

Other Details

This adware connects to the following possibly malicious URL:

  • http://{BLOCKED}t.{BLOCKED}eld.com/AVMobileCare.exe
  • http://{BLOCKED}c.{BLOCKED}emcare.com

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

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 00.558.39
VSAPI PATTERN Date: 06 Dec 2007
VSAPI PATTERN Date: 12/6/2007 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

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry key

[ 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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

 
  • In HKEY_CLASSES_ROOT\Interface
    • {03022430-ABC4-11D0-BDE2-00AA001A1953}
  • In HKEY_CLASSES_ROOT\TypeLib
    • {1EA4DBF0-3C3B-11CF-810C-00AA00389B71}

Step 4

Scan your computer with your Trend Micro product to delete files detected as ADW_AVSYSTEMCA.J. 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.