Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, Windows XP, Windows 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 may be dropped by other malware. It arrives as a component bundled with malware/grayware packages.

It registers itself as a Browser Helper Object (BHO) to ensure its automatic execution every time Internet Explorer is run. It does this by creating registry keys/entries.

It displays advertisements on Internet browsers.

  TECHNICAL DETAILS

File Size: 47,104 bytes
File Type: DLL
Memory Resident: No
Initial Samples Received Date: 20 Apr 2011
Payload: Displays advertisements

Arrival Details

This adware may be dropped by other malware.

It arrives as a component bundled with malware/grayware packages.

Autostart Technique

This adware registers itself as a Browser Helper Object (BHO) to ensure its automatic execution every time Internet Explorer is run. It does this by creating the following registry key(s)/entry(ies):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{7BEB7C1E-2A86-4217-B3B2-B2ADACF0CB04}

Other System Modifications

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

HKEY_CLASSES_ROOT\WizPop_Helper.WizPop

HKEY_CLASSES_ROOT\WizPop_Helper.WizPop.1

HKEY_CLASSES_ROOT\CLSID\{7BEB7C1E-2A86-4217-B3B2-B2ADACF0CB04}

HKEY_CLASSES_ROOT\Interface\{F157B3CF-FC60-4678-B255-284C231DEFB8}

HKEY_CLASSES_ROOT\TypeLib\{7E79EE02-63B0-4EA8-8986-A61160D53581}

Adware Routine

This adware displays advertisements on Internet browsers.

  SOLUTION

Minimum Scan Engine: 8.900
SSAPI PATTERN File: 1.170.10
SSAPI PATTERN Date: 20 Apr 2011

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product and note files detected as ADW_WIZPOP

Step 3

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

NOTES:

To remove BHO Keys:

  1. Close all instances of opened Internet browser windows.
    Open a command prompt window. Click Start>Run.
      On Windows 98 and ME, type

    COMMAND, then press Enter.
    On Windows NT, 2000, XP, and Server 2003, type
    CMD, then press Enter.
  2. In the command prompt, type the following, then press Enter:
    CD {Malware Path}
  3. Still in the command prompt type the following then press Enter:
    On Windows 98 and ME, type
    RUNDLL {Malware File Name},DllUnregisterServer
    On Windows NT, 2000, XP, and Server 2003, type
    REGSVR32 {Malware File Name} /U
  4. Click Yes or OK when prompted.
  5. Close command prompt.


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