ADW_WINFIXERFC

 Analysis by: Kathleen Notario

 PLATFORM:

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

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  TECHNICAL DETAILS

File Size:

3,492,392 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

15 Jul 2010

Installation

This adware adds the following folders:

  • C:\Documents and Settings\All Users\Application Data\Doraibuhogo
  • C:\Documents and Settings\All Users\Application Data\SalesMon
  • C:\Documents and Settings\All Users\Start Menu\Programs\Doraibuhogo
  • %Program Files%\Doraibuhogo
  • %Program Files%\Common Files\Doraibuhogo

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

Autostart Technique

This adware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Salestart="%Program Files%\\Common Files\\Doraibuhogo\\stm.exe" dm=http://{BLOCKED}uhogo.com ad=http://{BLOCKED}uhogo.com sd=http://{BLOCKED}g.{BLOCKED}uhogo.com =

(Note: The default value data of the said registry entry is .)

Other System Modifications

This adware adds the following registry keys:

HKEY_CLASSES_ROOT\CLSID\{645FF040-5081-101B-9F08-00AA002F954E}\
Shell
=

HKEY_CURRENT_USER\Software\Doraibuhogo
=

HKEY_LOCAL_MACHINE\SOFTWARE\Doraibuhogo
=

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
GDCJP_is1
=

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Doraibuhogo = %Program Files%\Doraibuhogo\GDC.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
gdcw = %Program Files%\Doraibuhogo\data\GDCW.exe

Dropping Routine

This adware drops the following files:

  • C:\Documents and Settings\All Users\Start Menu\Programs\Doraibuhogo\Doraibuhogo –¢“o˜^”Å.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\Doraibuhogo\Doraibuhogo ƒAƒ“ƒCƒXƒg[ƒ‹.lnk
  • C:\Documents and Settings\All Users\Start Menu\Programs\Doraibuhogo\Doraibuhogo Webƒy[ƒW.lnk
  • %Desktop%\Doraibuhogo –¢“o˜^”Å.lnk
  • C:\Documents and Settings\{username}\Application Data\Microsoft\Internet Explorer\Quick Launch\Doraibuhogo –¢“o˜^”Å.lnk
  • %Program Files%\Common Files\Doraibuhogo\stm.exe - also detected as ADW_WINFIXERFC

(Note: %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %Program Files% is the default Program Files folder, usually C:\Program Files.)

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

0.956.04

VSAPI PATTERN Date:

15 Jul 2010

VSAPI PATTERN Date:

7/15/2010 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 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • Salestart=%Program Files%\Common Files\Doraibuhogo\stm.exe dm=http://{BLOCKED}uhogo.com ad=http://{BLOCKED}uhogo.com sd=http://{BLOCKED}g.{BLOCKED}uhogo.com
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • Doraibuhogo=%Program Files%\Doraibuhogo\GDC.exe
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • gdcw=%Program Files%\Doraibuhogo\data\GDCW.exe

Step 4

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_CLASSES_ROOT\CLSID\{645FF040-5081-101B-9F08-00AA002F954E}
    • Shell
  • In HKEY_CURRENT_USER\Software
    • Doraibuhogo
  • In HKEY_LOCAL_MACHINE\SOFTWARE
    • Doraibuhogo
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
    • GDCJP_is1

Step 5

Search and delete this folder

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

  • C:\Documents and Settings\All Users\Application Data\Doraibuhogo

  • C:\Documents and Settings\All Users\Application Data\SalesMon

  • C:\Documents and Settings\All Users\Start Menu\Programs\Doraibuhogo

  • %Program Files%\Doraibuhogo

  • %Program Files%\Common Files\Doraibuhogo

Step 6

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result. %Desktop%\Doraibuhogo –¢“o˜^”Å.lnk

C:\Documents and Settings\{username}\Application Data\Microsoft\Internet Explorer\Quick Launch\Doraibuhogo –¢“o˜^”Å.lnk

Step 7

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