ALIASES:

[3.nsis]:RDN/Generic PUP.x!chl. (McAfee); Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 1,636,764 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 14 Jul 2014

Arrival Details

This adware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This adware creates the following folders:

  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\nsu3.tmp
  • %User Temp%\nsy9.tmp
  • %Program Files%\Convert Files for Free
  • %System Root%\Documents and Settings\Wilbert
  • %Program Files%\File Type Helper
  • %User Temp%\nsc25.tmp
  • %User Temp%\nsd34.tmp
  • %User Profile%\Application Data\VOPackage
  • %Start Menu%\Programs\VOPackage

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Profile% is a user's profile folder, where it usually is C:\Documents and Settings\{user name} on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name} on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This adware registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}

Other System Modifications

This adware deletes the following files:

  • %User Temp%\nsf1.tmp
  • %User Temp%\nsu3.tmp
  • %User Temp%\nst7.tmp
  • %User Temp%\nsy9.tmp
  • %User Temp%\nsc1F.tmp
  • %User Temp%\nsc25.tmp
  • %User Temp%\nso32.tmp
  • %User Temp%\nsd34.tmp

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Convert Files for Free

HKEY_LOCAL_MACHINE\Software\Convert Files for Free\
ConvertFilesforFree

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Policies\
Ext

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Policies\
Ext\CLSID

HKEY_LOCAL_MACHINE\Software\ZUpdater\
ConvertFilesforFreeUpdt.exe

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free

HKEY_LOCAL_MACHINE\Software\Convert Files for Free\
installed_success

HKEY_CLASSES_ROOT\ConvertFilesforFree.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ConvertFilesforFree.1\CLSID

HKEY_CLASSES_ROOT\ConvertFilesforFree

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ConvertFilesforFree\CurVer

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\VersionIndependentProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\Implemented Categories\
{59fb2056-d625-48d0-a944-1a85b5ab2640}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\File Type Helper

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Unknown\shell\opendlg\
command

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
FileTypeHelper.exe

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free
Name = "Convert Files for Free"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free
Version = "8.25"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
ConvertFilesforFree
app_id = "5A23FD7D951E47F3BF71EEBFDEA89FDE"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
ConvertFilesforFree
Channel = "Installmonetize3"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
ConvertFilesforFree
Root_domen = "www.convertfilesforfree.com/w"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
ConvertFilesforFree
JS_Domen = "d1798l6lhp8h4d.cloudfront.net/w"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
ConvertFilesforFree
Name_Main_build = "Convert Files for Free"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext
ListBox_Support_CLSID = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
Ext\CLSID
{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB} = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
Version = "8.25"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
Folder = "%User Temp%"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
Name = "ConvertFilesforFreeUpdt"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
Url = "http://www.{BLOCKED}tfilesforfree.com/w/updater/u.php"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
app_id = "5A23FD7D951E47F3BF71EEBFDEA89FDE"

HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\
ConvertFilesforFreeUpdt.exe
ext_params = "&channel=Installmonetize3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
DisplayName = "Convert Files for Free"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
UninstallString = "%Program Files%\Convert Files for Free\uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
DisplayIcon = "%Program Files%\Convert Files for Free\install.ico"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
DisplayVersion = "8.25"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
URLInfoAbout = "http://www.{BLOCKED}tfilesforfree.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Convert Files for Free
Publisher = "Convert Files for Free"

HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\
installed_success
installed_success = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
NoExplorer = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\InprocServer32
ThreadingModel = "Apartment"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}\TypeLib
Version = "1.0"

HKEY_LOCAL_MACHINE\SOFTWARE\File Type Helper
old_openas = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\File Type Helper
old_opendlg = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage
DisplayName = "Installer"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage
UninstallString = "%User Profile%\VOPackage\uninstall.exe "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage
DisplayIcon = "%User Profile%\VOPackage\uninstall.exe "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage
DisplayVersion = "1.0.0.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
VOPackage
Source = "imz"

Dropping Routine

This adware drops the following files:

  • %User Temp%\nsu3.tmp\ConvertFilesforFree_8.25_Installmonetize3_release.exe
  • %User Temp%\nsu3.tmp\VOPackage.exe
  • %User Temp%\nsu3.tmp\registry.dll
  • %User Temp%\nsu3.tmp\manlib.dll
  • %User Temp%\nsu3.tmp\output.txt
  • %User Temp%\nsy9.tmp\System.dll
  • %User Temp%\nsy9.tmp\registry.dll
  • %User Temp%\nsy9.tmp\GetVersion.dll
  • %User Temp%\nsy9.tmp\inetc.dll
  • /END
  • %Program Files%\Convert Files for Free\install.ico
  • %Program Files%\Convert Files for Free\ConvertFilesforFree.dll
  • %User Temp%\nsy9.tmp\SimpleSC.dll
  • %User Temp%\nsy9.tmp\nsExec.dll
  • %Program Files%\Convert Files for Free\ConvertFilesforFreeUpdt.exe
  • %User Temp%\helper.exe
  • %Program Files%\Convert Files for Free\uninstall.exe
  • 0
  • %Temp%\ConvertFilesforFreeUpdt_update.txt
  • %User Temp%\nss21.tmp
  • %Program Files%\File Type Helper\FileTypeHelper_assoc.7z
  • %User Temp%\nsc25.tmp\nsis7z.dll
  • %Program Files%\File Type Helper\Magnifier_64.ico
  • %Program Files%\File Type Helper\FileTypeHelper_assoc.exe
  • %Program Files%\File Type Helper\FileTypeHelper.exe
  • isAssoc.txt
  • %Program Files%\File Type Helper\uninstall.exe
  • %User Temp%\nsd34.tmp\System.dll
  • %User Temp%\nsd34.tmp\WmiInspector.dll
  • %User Temp%\nsd34.tmp\t1.dll
  • %User Temp%\nsd34.tmp\inetc.dll
  • %User Temp%\b
  • %User Temp%\nsd34.tmp\IpConfig.dll
  • %User Temp%\heu39T.nss
  • %User Profile%\VOPackage\Uninstall.exe
  • %Start Menu%\Programs\VOPackage\Configure.lnk

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.. %User Profile% is a user's profile folder, where it usually is C:\Documents and Settings\{user name} on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name} on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This adware connects to the following possibly malicious URL:

  • http://www.{BLOCKED}tfilesforfree.com
  • http://www.{BLOCKED}tfilesforfree.com/r?{random characters}
  • {BLOCKED}120.127
  • {BLOCKED}3.198.187

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.700

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

Close all opened browser windows

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
    • Convert Files for Free
  • In HKEY_LOCAL_MACHINE\Software\Convert Files for Free
    • ConvertFilesforFree
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies
    • Ext
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Ext
    • CLSID
  • In HKEY_LOCAL_MACHINE\Software\ZUpdater
    • ConvertFilesforFreeUpdt.exe
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • Convert Files for Free
  • In HKEY_LOCAL_MACHINE\Software\Convert Files for Free
    • installed_success
  • In HKEY_CLASSES_ROOT
    • ConvertFilesforFree.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ConvertFilesforFree.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • ConvertFilesforFree
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ConvertFilesforFree
    • CurVer
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • VersionIndependentProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • Implemented Categories
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\Implemented Categories
    • {59fb2056-d625-48d0-a944-1a85b5ab2640}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • Version
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {22B58425-A384-436C-A334-BB9255664D10}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{22B58425-A384-436C-A334-BB9255664D10}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{22B58425-A384-436C-A334-BB9255664D10}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {951F4658-6461-46AD-AB13-F73E7FCBE6DB}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE
    • File Type Helper
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Unknown\shell\opendlg
    • command
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\App Paths
    • FileTypeHelper.exe
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • VOPackage

Step 4

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\Convert Files for Free
    • Name = "Convert Files for Free"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free
    • Version = "8.25"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\ConvertFilesforFree
    • app_id = "5A23FD7D951E47F3BF71EEBFDEA89FDE"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\ConvertFilesforFree
    • Channel = "Installmonetize3"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\ConvertFilesforFree
    • Root_domen = "www.convertfilesforfree.com/w"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\ConvertFilesforFree
    • JS_Domen = "d1798l6lhp8h4d.cloudfront.net/w"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\ConvertFilesforFree
    • Name_Main_build = "Convert Files for Free"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ext
    • ListBox_Support_CLSID = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Ext\CLSID
    • {59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB} = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • Version = "8.25"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • Folder = "%User Temp%"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • Name = "ConvertFilesforFreeUpdt"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • Url = "http://www.{BLOCKED}tfilesforfree.com/w/updater/u.php"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • app_id = "5A23FD7D951E47F3BF71EEBFDEA89FDE"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ZUpdater\ConvertFilesforFreeUpdt.exe
    • ext_params = "&channel=Installmonetize3"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • DisplayName = "Convert Files for Free"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • UninstallString = "%Program Files%\Convert Files for Free\uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • DisplayIcon = "%Program Files%\Convert Files for Free\install.ico"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • DisplayVersion = "8.25"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • URLInfoAbout = "http://www.{BLOCKED}tfilesforfree.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Convert Files for Free
    • Publisher = "Convert Files for Free"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Convert Files for Free\installed_success
    • installed_success = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}
    • NoExplorer = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{59A062A1-5ECA-4a1a-BC44-B2A9283A8ACB}\InprocServer32
    • ThreadingModel = "Apartment"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{951F4658-6461-46AD-AB13-F73E7FCBE6DB}\TypeLib
    • Version = "1.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\File Type Helper
    • old_openas = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\File Type Helper
    • old_opendlg = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
    • DisplayName = "Installer"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
    • UninstallString = "%User Profile%\VOPackage\uninstall.exe "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
    • DisplayIcon = "%User Profile%\VOPackage\uninstall.exe "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
    • DisplayVersion = "1.0.0.0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\VOPackage
    • Source = "imz"

Step 5

Search and delete these components

[ Learn More ]
There may be some components 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.
  • %User Temp%\nsu3.tmp\ConvertFilesforFree_8.25_Installmonetize3_release.exe
  • %User Temp%\nsu3.tmp\VOPackage.exe
  • %User Temp%\nsu3.tmp\registry.dll
  • %User Temp%\nsu3.tmp\manlib.dll
  • %User Temp%\nsu3.tmp\output.txt
  • %User Temp%\nsy9.tmp\System.dll
  • %User Temp%\nsy9.tmp\registry.dll
  • %User Temp%\nsy9.tmp\GetVersion.dll
  • %User Temp%\nsy9.tmp\inetc.dll
  • /END
  • %Program Files%\Convert Files for Free\install.ico
  • %Program Files%\Convert Files for Free\ConvertFilesforFree.dll
  • %User Temp%\nsy9.tmp\SimpleSC.dll
  • %User Temp%\nsy9.tmp\nsExec.dll
  • %Program Files%\Convert Files for Free\ConvertFilesforFreeUpdt.exe
  • %User Temp%\helper.exe
  • %Program Files%\Convert Files for Free\uninstall.exe
  • 0
  • %Temp%\ConvertFilesforFreeUpdt_update.txt
  • %User Temp%\nss21.tmp
  • %Program Files%\File Type Helper\FileTypeHelper_assoc.7z
  • %User Temp%\nsc25.tmp\nsis7z.dll
  • %Program Files%\File Type Helper\Magnifier_64.ico
  • %Program Files%\File Type Helper\FileTypeHelper_assoc.exe
  • %Program Files%\File Type Helper\FileTypeHelper.exe
  • isAssoc.txt
  • %Program Files%\File Type Helper\uninstall.exe
  • %User Temp%\nsd34.tmp\System.dll
  • %User Temp%\nsd34.tmp\WmiInspector.dll
  • %User Temp%\nsd34.tmp\t1.dll
  • %User Temp%\nsd34.tmp\inetc.dll
  • %User Temp%\b
  • %User Temp%\nsd34.tmp\IpConfig.dll
  • %User Temp%\heu39T.nss
  • %User Profile%\VOPackage\Uninstall.exe
  • %Start Menu%\Programs\VOPackage\Configure.lnk

Step 6

Search and delete these folders

[ 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.
  • %System Root%\DOCUME~1
  • %System Root%\DOCUME~1\Wilbert
  • %User Profile%\LOCALS~1
  • %User Temp%\nsu3.tmp
  • %User Temp%\nsy9.tmp
  • %Program Files%\Convert Files for Free
  • %System Root%\Documents and Settings\Wilbert
  • %Program Files%\File Type Helper
  • %User Temp%\nsc25.tmp
  • %User Temp%\nsd34.tmp
  • %User Profile%\Application Data\VOPackage
  • %Start Menu%\Programs\VOPackage

Step 7

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

Step 8

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %User Temp%\nsf1.tmp
  • %User Temp%\nsu3.tmp
  • %User Temp%\nst7.tmp
  • %User Temp%\nsy9.tmp
  • %User Temp%\nsc1F.tmp
  • %User Temp%\nsc25.tmp
  • %User Temp%\nso32.tmp
  • %User Temp%\nsd34.tmp


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