Analysis by: Karl Dominguez
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware may be downloaded by other malware/grayware/spyware from remote sites. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size: 154,079 bytes
File Type: EXE
Memory Resident: No

Arrival Details

This adware may be downloaded by other malware/grayware/spyware from remote sites.

It may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This adware creates the following folders:

  • %Program Files%\SPAMBLOCKERUTILITY
  • %Program Files%\SPAMBLOCKERUTILITY\bin
  • %Program Files%\SPAMBLOCKERUTILITY\bin\4.8.0.0

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Other System Modifications

This adware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\SpamBlockerUtility\

SpamBlockerUtility\Install
updtWallPaper = 1

  SOLUTION

Minimum Scan Engine: 8.900

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

Remove malware files dropped/downloaded by ADW_WEBEXTC

     ADW_HOTBAR

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.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\SpamBlockerUtility
    • SpamBlockerUtility

Step 4

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