Analysis by: Joselyn Canuela
ALIASES:

PUA.Downloader (Symantec), Adware.Solvusoft (Zoner), ADWARE/Solvusoft.utnzl (Avira), PUP/Multitoolbar (Panda)

 PLATFORM:

Windows

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

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be manually installed by a user.

It modifies the Internet Explorer Zone Settings.

  TECHNICAL DETAILS

File Size: 1,838,144 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 07 Oct 2016
Payload: Connects to URLs/IPs, Downloads files

Arrival Details

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

It may be manually installed by a user.

Installation

This Potentially Unwanted Application adds the following folders:

  • %AppDataLocal%\FileViewPro
  • %Program Files%\FileViewPro
  • %User Temp%\ns{5 random characters}.tmp
  • %System Root%\Spacekace
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}
  • %Program Files%\Solvusoft
  • %AppDataLocal%\IIIQF
  • %All Users Profile%\Solvusoft

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local 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.. %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.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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 mutexes to ensure that only one of its copies runs at any one time:

  • FileViewPro
  • Global\rdkatfwtpvtxbmjnx0bumpg53tpf22wt
  • Global\log-%System Root%_Users_{User Profile}_AppData_Local_Temp_FighterSuiteLight
  • Global\log-%System Root%_Users_{User Profile}_AppData_Roaming_Solvusoft_Solvusoft Suite_Logs_MachineId
  • SF_Solvusoft_RCPRO

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Autostart Technique

This Potentially Unwanted Application drops the following file(s) in the Windows Common Startup folder to enable its automatic execution at every system startup:

  • %Common Startup%\FileViewPro.lnk
  • %Common Startup%\Uninstall\FileViewPro.lnk
  • %All Users Startup%\FileViewPro\FileViewPro.lnk
  • %All Users Startup%\FileViewPro\Uninstall\FileViewPro.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\FAQ and License Agreement\License Agreement.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\FAQ and License Agreement\Frequently Asked Questions.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Collect Log Files.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Request Support.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Log Files.lnk

(Note: %Common Startup% is the system's shared Startup folder, which is usually C:\Documents and Settings\All Users\Start Menu\Programs\Startup on Windows 2000, XP, and Server 2003, and C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup on Windows Vista, 7, and 8.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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 System Modifications

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft Corporation

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{80107F16-CB2E-42AB-AB9D-6C11540D5A8B}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster

HKEY_CURRENT_USER\Software\Solvusoft

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
InstallLocation = "%Program Files%\FileViewPro\"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: Icon Group = "FileViewPro"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: User = "{User Profile}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: Selected Tasks = "desktopicon"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: Deselected Tasks = "quicklaunchicon"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: Language = "{Language Selected}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
DisplayName = "FileViewPro"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
DisplayIcon = "%Program Files%\FileViewPro\FileViewPro.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
UninstallString = ""%Program Files%\FileViewPro\unins000.exe""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
QuietUninstallString = ""%Program Files%\FileViewPro\unins000.exe"" /SILENT"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
DisplayVersion = "1.1.0.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Publisher = "Solvusoft Corporation"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
InstallDate = "{Install Date}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
MajorVersion = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
MinorVersion = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
EstimatedSize = "59819"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Applications\Offer1.exe
IsHostApp = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Applications\WinThrusterSetup.exe
IsHostApp = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{80107F16-CB2E-42AB-AB9D-6C11540D5A8B}
UninstallString = "%All Users Profile%\{Machine ID}\WinThrusterSetup.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
DisplayIcon = %All Users Profile%\{Machine ID}\WinThrusterSetup.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
DisplayName = "WinThruster"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
UninstallString = ""%All Users Profile%\{Machine ID}\WinThrusterSetup.exe"" REMOVE=TRUE MODIFY=FALSE"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
ModifyPath = "%All Users Profile%\{Machine ID}\WinThrusterSetup.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
Publisher = "Solvusoft Corporation"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
Contact = "SPAMfighter ApS"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
HelpLink = "http://www.spamfighter.com/SLOW-PCfighter/"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
URLUpdateInfo = "http://www.spamfighter.com/SLOW-PCfighter/"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
Comments = "All rights reserved"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
DisplayVersion = "1.16.7"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
VersionMajor = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
VersionMinor = "16"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
WinThruster
InstallLocation = "%Program Files%\Solvusoft\WinThruster"

HKEY_CURRENT_USER\Software\Solvusoft\
RCPRO
SyncScheduled = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
RCPRO
FLRevision = "4"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft\
RCPRO
lastScan =

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Schedule\
TaskCache\Tasks\{Unique ID}
DynamicInfo = "{Hex Values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Schedule\
CompatibilityAdapter\Signatures
WinThruster-{%User Profile%}-Notification.job = "{Hex Values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Schedule\
CompatibilityAdapter\Signatures
WinThruster-{%User Profile%}-Notification.job.fp = "3062502989"

HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft Corporation\
FileViewPro
vid = "vid={32 random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: Setup Version = "5.5.4 (u)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
FileViewPro_is1
Inno Setup: App Path = "%Program Files%\FileViewPro"

It modifies the Internet Explorer Privacy Settings.

Web Browser Home Page and Search Page Modification

This Potentially Unwanted Application modifies the Internet Explorer Zone Settings.

Download Routine

This Potentially Unwanted Application connects to the following website(s) to download and execute a malicious file:

  • http://www.{BLOCKED}oft.com/file-downloads/builds/static_delivery/file_parts/winthruster/spf/build_102315/WinThrusterSetup_1.16.7.exe
  • http://www.{BLOCKED}oft.com/file-downloads/builds/static_delivery/file_parts/fileviewpro/build_092916_avfix/FileViewPro-1.1.0.0.exe

It saves the files it downloads using the following names:

  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\2x5ni3k1.tmp
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\2x5ni3k1.newcfg
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\user.config
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\sjovrhsk.tmp
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\sjovrhsk.newcfg
  • %Application Data%\IsolatedStorage\StrongName.bgmpn5dvvxnsjnlw3sxxbpwozkllh5eq\identity.dat
  • %All Users Profile%\IsolatedStorage\dl14bzox.yks\r25l3we3.owo\StrongName.bgmpn5dvvxnsjnlw3sxxbpwozkllh5eq\identity.dat
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\njz4g1e1.tmp
  • %AppDataLocal%\FileViewPro\FileViewPro.exe_Url_jn4xqozlzppxcht2yt2wvho2bxkp31wm\1.1.0.0\njz4g1e1.newcfg
  • %Program Files%\Solvusoft\WinThruster\CommonToolkitSuite.cts
  • %All Users Profile%\Solvusoft\Tray\Configurations\RCPRO.xml
  • %User Temp%\FighterSuiteLight.log.txt
  • %Application Data%\Solvusoft\Solvusoft Suite\Logs\MachineId.log.txt
  • %All Users Profile%\Solvusoft\WinThruster\wxfdata.wxf.part
  • %All Users Profile%\Solvusoft\WinThruster\wxfdata.wxf.part.details
  • %All Users Profile%\Solvusoft\WinThruster\wxfdata.wxf
  • %Program Files%\FileViewPro\7z\7z.dll
  • %Program Files%\FileViewPro\Aspose.Slides.lic
  • %Program Files%\FileViewPro\Be.Windows.Forms.HexBox.dll
  • %Program Files%\FileViewPro\Code\Extended\Patch-Mode.xshd
  • %Program Files%\FileViewPro\Code\Extended\Python-Mode.xshd
  • %Program Files%\FileViewPro\Code\Extended\SQL-Mode.xshd
  • %Program Files%\FileViewPro\Cursors\PanToolCursor.cur
  • %Program Files%\FileViewPro\de\DevExpress.Data.v12.1.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.Printing.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.RichEdit.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.Utils.v12.1.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.XtraBars.v12.1.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.XtraEditors.v12.1.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.XtraGrid.v12.1.resources.dll
  • %Program Files%\FileViewPro\de\DevExpress.XtraPrinting.v12.1.resources.dll
  • %Program Files%\FileViewPro\Declarations.dll
  • %Program Files%\FileViewPro\DevExpress.Data.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.Data.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.Office.v12.1.Core.dll
  • %Program Files%\FileViewPro\DevExpress.Office.v12.1.Core.xml
  • %Program Files%\FileViewPro\DevExpress.Printing.v12.1.Core.dll
  • %Program Files%\FileViewPro\DevExpress.Printing.v12.1.Core.xml
  • %Program Files%\FileViewPro\DevExpress.RichEdit.v12.1.Core.dll
  • %Program Files%\FileViewPro\DevExpress.RichEdit.v12.1.Core.xml
  • %Program Files%\FileViewPro\DevExpress.Utils.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.Utils.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.XtraBars.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.XtraBars.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.XtraEditors.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.XtraEditors.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.XtraGrid.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.XtraGrid.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.XtraPrinting.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.XtraPrinting.v12.1.xml
  • %Program Files%\FileViewPro\DevExpress.XtraRichEdit.v12.1.Design.dll
  • %Program Files%\FileViewPro\DevExpress.XtraRichEdit.v12.1.dll
  • %Program Files%\FileViewPro\DevExpress.XtraRichEdit.v12.1.Extensions.dll
  • %Program Files%\FileViewPro\DevExpress.XtraRichEdit.v12.1.Printing.dll 11KB
  • %Program Files%\FileViewPro\DevExpress.XtraRichEdit.v12.1.xml
  • %Program Files%\FileViewPro\es\DevExpress.Data.v12.1.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.Printing.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.RichEdit.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.Utils.v12.1.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.XtraBars.v12.1.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.XtraEditors.v12.1.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.XtraGrid.v12.1.resources.dll
  • %Program Files%\FileViewPro\es\DevExpress.XtraPrinting.v12.1.resources.dll
  • %Program Files%\FileViewPro\EULA_FileViewPro.rtf
  • %Program Files%\FileViewPro\Facebook.dll
  • %Program Files%\FileViewPro\Facebook.pdb
  • %Program Files%\FileViewPro\FileViewPro.Common.dll
  • %Program Files%\FileViewPro\FileViewPro.Common.pdb
  • %Program Files%\FileViewPro\FileViewPro.exe - detected as PUA_Solvusoft.GB
  • %Program Files%\FileViewPro\FileViewPro.exe.config
  • %Program Files%\FileViewPro\FileViewPro.Facebook.dll
  • %Program Files%\FileViewPro\FileViewPro.Facebook.pdb
  • %Program Files%\FileViewPro\FileViewPro.Licensing.dll
  • %Program Files%\FileViewPro\FileViewPro.Licensing.pdb
  • %Program Files%\FileViewPro\FileViewPro.Localization.dll
  • %Program Files%\FileViewPro\FileViewPro.Localization.pdb
  • %Program Files%\FileViewPro\FileViewPro.pdb
  • %Program Files%\FileViewPro\FileViewPro.Strings.3.resources
  • %Program Files%\FileViewPro\FileViewPro.Views.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Document.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Document.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Media.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Media.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Message.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Message.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Mime.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Mime.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Pdf.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Pdf.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Torrent.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Torrent.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Wpd.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Wpd.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Wps.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Wps.pdb
  • %Program Files%\FileViewPro\FileViewPro.Views.Xps.dll
  • %Program Files%\FileViewPro\FileViewPro.Views.Xps.pdb
  • %Program Files%\FileViewPro\FileViewPro.vshost.exe
  • %Program Files%\FileViewPro\FileViewPro.vshost.exe.config
  • %Program Files%\FileViewPro\FileViewPro.vshost.exe.manifest
  • %Program Files%\FileViewPro\ICSharpCode.SharpZipLib.dll
  • %Program Files%\FileViewPro\ICSharpCode.TextEditor.dll
  • %Program Files%\FileViewPro\ImageView.dll
  • %Program Files%\FileViewPro\ImageView.pdb
  • %Program Files%\FileViewPro\Implementation.dll
  • %Program Files%\FileViewPro\Interop.WIA.dll
  • %Program Files%\FileViewPro\IsLicense50.dll
  • %Program Files%\FileViewPro\it
  • %Program Files%\FileViewPro\ja\DevExpress.Data.v12.1.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.Printing.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.RichEdit.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.Utils.v12.1.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.XtraBars.v12.1.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.XtraEditors.v12.1.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.XtraGrid.v12.1.resources.dll
  • %Program Files%\FileViewPro\ja\DevExpress.XtraPrinting.v12.1.resources.dll
  • %Program Files%\FileViewPro\Langs\ar.xml
  • %Program Files%\FileViewPro\Langs\cs.xml
  • %Program Files%\FileViewPro\Langs\da.xml
  • %Program Files%\FileViewPro\Langs\de.xml
  • %Program Files%\FileViewPro\Langs\el.xml
  • %Program Files%\FileViewPro\Langs\en-US.xml
  • %Program Files%\FileViewPro\Langs\en.xml
  • %Program Files%\FileViewPro\Langs\es.xml
  • %Program Files%\FileViewPro\Langs\fi.xml
  • %Program Files%\FileViewPro\Langs\fr.xml
  • %Program Files%\FileViewPro\Langs\hi.xml
  • %Program Files%\FileViewPro\Langs\hu.xml
  • %Program Files%\FileViewPro\Langs\it.xml
  • %Program Files%\FileViewPro\Langs\ja.xml
  • %Program Files%\FileViewPro\Langs\ko.xml
  • %Program Files%\FileViewPro\Langs\nl.xml
  • %Program Files%\FileViewPro\Langs\no.xml
  • %Program Files%\FileViewPro\Langs\pl.xml
  • %Program Files%\FileViewPro\Langs\pt-br.xml
  • %Program Files%\FileViewPro\Langs\pt-pt.xml
  • %Program Files%\FileViewPro\Langs\ro.xml
  • %Program Files%\FileViewPro\Langs\ru.xml
  • %Program Files%\FileViewPro\Langs\sv.xml
  • %Program Files%\FileViewPro\Langs\tr.xml
  • %Program Files%\FileViewPro\Langs\zh-cn.xml
  • %Program Files%\FileViewPro\Langs\zh-tw.xml
  • %Program Files%\FileViewPro\LibVlcWrapper.dll
  • %Program Files%\FileViewPro\licenses.licx
  • %Program Files%\FileViewPro\Microsoft.CSharp.dll
  • %Program Files%\FileViewPro\new_icon.ico
  • %Program Files%\FileViewPro\NLog.dll
  • %Program Files%\FileViewPro\O2S.Components.PDFRender4NET.dll
  • %Program Files%\FileViewPro\O2S.Components.PDFRender4NET.xml
  • %Program Files%\FileViewPro\O2S.Components.PDFView4NET.dll
  • %Program Files%\FileViewPro\O2S.Components.PDFView4NET.xml
  • %Program Files%\FileViewPro\PaintDotNet.Base.dll
  • %Program Files%\FileViewPro\PaintDotNet.Core.dll
  • %Program Files%\FileViewPro\PaintDotNet.Data.dll
  • %Program Files%\FileViewPro\PaintDotNet.dll
  • %Program Files%\FileViewPro\PaintDotNet.Effects.dll
  • %Program Files%\FileViewPro\PaintDotNet.Resources.dll
  • %Program Files%\FileViewPro\PaintDotNet.SystemLayer.dll
  • %Program Files%\FileViewPro\PluginInstaller.exe
  • %Program Files%\FileViewPro\Plugins.xml
  • %Program Files%\FileViewPro\QlmControls.dll
  • %Program Files%\FileViewPro\QlmLicenseLib.dll
  • %Program Files%\FileViewPro\Raw\dcraw.exe
  • %Program Files%\FileViewPro\ru\DevExpress.Data.v12.1.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.Printing.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.RichEdit.v12.1.Core.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.Utils.v12.1.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.XtraBars.v12.1.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.XtraEditors.v12.1.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.XtraGrid.v12.1.resources.dll
  • %Program Files%\FileViewPro\ru\DevExpress.XtraPrinting.v12.1.resources.dll
  • %Program Files%\FileViewPro\SDL.dll
  • %Program Files%\FileViewPro\SevenZipSharp.dll
  • %Program Files%\FileViewPro\SimplePsd.dll
  • %Program Files%\FileViewPro\SocialExplorer.FastDBF.dll
  • %Program Files%\FileViewPro\SocialExplorer.FastDBF.pdb
  • %Program Files%\FileViewPro\Svg.dll
  • %Program Files%\FileViewPro\Svg.pdb
  • %Program Files%\FileViewPro\swscale-0.dll
  • %Program Files%\FileViewPro\System.Windows.Forms.dll
  • %Program Files%\FileViewPro\TorrentParser.dll
  • %Program Files%\FileViewPro\unassoc.bat
  • %Program Files%\FileViewPro\unins000.dat
  • %Program Files%\FileViewPro\unins000.exe
  • %Program Files%\FileViewPro\unins000.msg
  • %Program Files%\FileViewPro\Wps\wps2html.exe
  • %Program Files%\Solvusoft\WinThruster\LogFilesCollector.exe
  • %Program Files%\Solvusoft\WinThruster\MachineId.exe
  • %Program Files%\Solvusoft\WinThruster\MachineIdGateway.dll
  • %Program Files%\Solvusoft\WinThruster\MsgSys.exe
  • %Program Files%\Solvusoft\WinThruster\OEMData.pkt
  • %Program Files%\Solvusoft\WinThruster\sfhtml.dll
  • %Program Files%\Solvusoft\WinThruster\Sync.exe
  • %Program Files%\Solvusoft\WinThruster\UpDates.exe
  • %Program Files%\Solvusoft\WinThruster\WinThruster.exe - detected as PUA_Solvusoft.GB
  • %Program Files%\Solvusoft\WinThruster\CommonToolkitSuite.cts
  • %Program Files%\Solvusoft\WinThruster\CommonToolkitSuiteLight.dll
  • %Program Files%\Solvusoft\WinThruster\Documents\LicenseEN.rtf
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_JA.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_KO.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_NL.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_NO.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_PL.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_PT.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_RO.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_RU.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_SV.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_TH.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_TR.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_TW.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_ZH.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_BG.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_CS.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_DA.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_DE.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_EL.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_EN.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_EN-US.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_ES.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_FI.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_FR.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_HR.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_HU.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_ID.xml
  • %Program Files%\Solvusoft\WinThruster\Languages\Language_IT.xml
  • %Program Files%\Solvusoft\Tray\Translations
  • %Program Files%\Solvusoft\Tray\MsgSys.exe
  • %Program Files%\Solvusoft\Tray\sfhtml.dll
  • %Program Files%\Solvusoft\Tray\SolvusoftTray.exe
  • %Program Files%\Solvusoft\Tray\SuiteClient.dll
  • %Program Files%\Solvusoft\Tray\HTML
  • %Program Files%\Solvusoft\Tray\notification
  • %Program Files%\Solvusoft\Tray\HTML\popup.css
  • %Program Files%\Solvusoft\Tray\HTML\popup.html
  • %Program Files%\Solvusoft\Tray\HTML\restart_lightbox.html
  • %Program Files%\Solvusoft\Tray\HTML\update_manager.css
  • %Program Files%\Solvusoft\Tray\HTML\Update_Manager.html
  • %Program Files%\Solvusoft\Tray\HTML\uptodate_lightbox.html
  • %Program Files%\Solvusoft\Tray\HTML\whitelabel.css
  • %Program Files%\Solvusoft\Tray\HTML\gfx - contains images used for the UI
  • %Program Files%\Solvusoft\Tray\HTML\baloon-tip.html
  • %Program Files%\Solvusoft\Tray\HTML\checking_for_updates.html
  • %Program Files%\Solvusoft\Tray\HTML\done_lightbox.html
  • %Program Files%\Solvusoft\Tray\HTML\error_lightbox.html
  • %Program Files%\Solvusoft\Tray\notification\gfx - contains icons
  • %Program Files%\Solvusoft\Tray\Translations\Language_TH.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_TR.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_TW.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_VI.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_ZH.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_AR.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_BG.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_CS.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_DA.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_DE.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_EL.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_EN.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_ES.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_FI.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_FR.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_HE.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_HR.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_HU.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_ID.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_IT.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_JA.xml
  • %Desktop%\FileViewPro.lnk
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\{80107F16-CB2E-42AB-AB9D-6C11540D5A8B}
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.exe
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.msi
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.res
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\mia.lib
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\setup.bmp
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.dat
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.par
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\WinThrusterSetup.lnk
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}\instance.dat
  • %All Users Profile%\Solvusoft\Tray\Configurations\TKTRAY.xml
  • %Program Files%\Solvusoft\Tray\notification\popup.css
  • %Program Files%\Solvusoft\Tray\notification\popup.html
  • %Program Files%\Solvusoft\Tray\Translations\Language_KO.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_NL.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_NO.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_PL.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_PT.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_RO.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_RU.xml
  • %Program Files%\Solvusoft\Tray\Translations\Language_SV.xml

(Note: %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local 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.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.. %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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.. %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.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in 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 Potentially Unwanted Application does the following:

  • It adds the following files in the scheduled task:
    • %Windows%\Tasks\WinThruster-{%User Profile%}-Startup.job
    • %Windows%\Tasks\WinThruster-{%User Profile%}-Notification.job
    • %System%\Tasks\WinThruster-{%User Profile%}-Notification
    • %System%\Tasks\WinThruster-{%User Profile%}-Startup

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

NOTES:
Upon installing the FileViewPro, it asks the user to choose the language.

It then shows the user the License Agreement:

It displays the following to offer the application WinThruster to be installed:

Once the offer is accepted, it installs itself silently and it will have the following interface:

It performs a fake 'scan' and offers to repair errors upon purchase.

Once the main app finishes installation, it shows the following interface:

  SOLUTION

Minimum Scan Engine: 9.850
SSAPI PATTERN File: 1.821.00
SSAPI PATTERN Date: 22 Mar 2017

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

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.

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\FileViewPro_is1
  • HKEY_LOCAL_MACHINE\SOFTWARE\Solvusoft Corporation
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{80107F16-CB2E-42AB-AB9D-6C11540D5A8B}
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\WinThruster
  • HKEY_CURRENT_USER\Software\Solvusoft

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\Classes\Applications\Offer1.exe
    • IsHostApp = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Applications\WinThrusterSetup.exe
    • IsHostApp = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures
    • WinThruster-{%User Profile%}-Notification.job = "{Hex Values}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\CompatibilityAdapter\Signatures
    • WinThruster-{%User Profile%}-Notification.job.fp = "3062502989"

Step 5

Deleting Scheduled Tasks

For Windows 2000, Windows XP, and Windows Server 2003:

  1. Open the Windows Scheduled Tasks. Click Start>Programs>Accessories>
    System Tools>Scheduled Tasks.
  2. Locate each task that has the following value in the Schedule column:
     
    • Startup
    • Notification
  3. Right-click on the said file(s) with the aforementioned value.
  4. Click on Properties. In the Run field, check for the following string:
    Cmd /c /rd /s /q C:
  5. If the said string is found, delete the task.

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

  1. Open the Windows Task Scheduler. To do this:
    • On Windows Vista, Windows 7, and Windows Server 2008, click Start, type taskschd.msc in the Search input field, then press Enter.
    • On Windows 8, Windows 8.1, and Windows Server 2012, right-click on the lower left corner of the screen, click Run, type taskschd.msc, then press Enter.
  2. In the left panel, click Task Scheduler Library.
  3. In the upper-middle panel, locate each task that has the value in the Triggers column:
     
    • Startup
    • Notification
  4. In the lower-middle panel, click the Actions tab. In the Details column, check for the following string:
    Cmd /c /rd /s /q C:
  5. If the said string is found, delete the task..

Step 6

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.
  • %All Users Profile%\{4B36989F-BE86-4A21-94B1-AC154A69EA65}
  • %All Users Profile%\Solvusoft
  • %AppDataLocal%\FileViewPro
  • %AppDataLocal%\IIIQF
  • %Program Files%\FileViewPro
  • %Program Files%\Solvusoft
  • %User Temp%\ns{5 random characters}.tmp
  • %System Root%\Spacekace

Step 7

Search and delete these files

[ Learn More ]
There may be some 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.
  • %Common Startup%\FileViewPro.lnk
  • %Common Startup%\Uninstall\FileViewPro.lnk
  • %All Users Startup%\FileViewPro\FileViewPro.lnk
  • %All Users Startup%\FileViewPro\Uninstall\FileViewPro.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\FAQ and License Agreement\License Agreement.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\FAQ and License Agreement\Frequently Asked Questions.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Collect Log Files.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Request Support.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Solvusoft\WinThruster\Support Tools\Log Files.lnk
  • %Desktop%\FileViewPro.lnk
  • %Windows%\Tasks\WinThruster-{%User Profile%}-Startup.job
  • %Windows%\Tasks\WinThruster-{%User Profile%}-Notification.job
  • %System%\Tasks\WinThruster-{%User Profile%}-Notification
  • %System%\Tasks\WinThruster-{%User Profile%}-Startup

Step 8

Reset Internet security settings

[ Learn More ]

Step 9

Reset Internet privacy settings

[ Learn More ]

Step 10

Scan your computer with your Trend Micro product to delete files detected as PUA_SOLVUSOFT.GB. 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 the following Trend Micro Support pages for more information:


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