PUA.Win32.SoftonicDownloader.HX

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 connects to certain websites to send and receive information.

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.

Installation

This Potentially Unwanted Application drops the following files:

• %User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter_exe.parts
• %User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter.exe
• %User Temp%\is-{random}.tmp\DWGDXFConverter.tmp
• {Installation location}\DWG DXF Converter\is-{random}.tmp
• {Installation location}\DWG DXF Converter\unins000.exe
• {Installation location}\DWG DXF Converter\DWGDXFConverter.exe
• {Installation location}\DWG DXF Converter\EULA.txt
• {Installation location}\DWG DXF Converter\unins000.dat
• %Programs%\DWG DXF Converter\DWG DXF Converter.lnk
• %Programs%\DWG DXF Converter\DWG DXF Converter on the Web.url
• %Public%\Desktop\DWG DXF Converter.lnk
• %Application Data%\DWGDXFConverter\DWGDXFConverter.srd

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Programs% is the folder that contains the user’s program groups, which is usually C:\Windows\Start Menu\Programs or C:\Documents and Settings\{User name}\Start Menu\Programs on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs on Windows Vista, 7, and 8.. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following processes:

• "%User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter.exe"
• "%User Temp%\is-{random}.tmp\DWGDXFConverter.tmp" /SL5="{Random Numbers},%User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter.exe"
• "{Installation location}\DWG DXF Converter\DWGDXFConverter.exe"

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

• {Installation location}\DWG DXF Converter
• %User Temp%\is-{random}.tmp

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Potentially Unwanted Application adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: Setup Version = 6.0.3 (u)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: App Path = {Installation location}\DWG DXF Converter

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
InstallLocation = {Installation location}\DWG DXF Converter\

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: Icon Group = DWG DXF Converter

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: User = {username}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: Selected Tasks = desktopicon

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: Deselected Tasks =

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Inno Setup: Language = {language}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
DisplayName = DWG DXF Converter version 2.2.3

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
UninstallString = "{Installation location}\DWG DXF Converter\unins000.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
QuietUninstallString = "{Installation location}\DWG DXF Converter\unins000.exe" /SILENT

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
DisplayVersion = 2.2.3

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
Publisher = 3nity Softwares

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
URLInfoAbout = http://www.3{BLOCKED}wares.com

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
HelpLink = http://www.3{BLOCKED}wares.com

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
URLUpdateInfo = http://www.3{BLOCKED}wares.com

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
NoModify = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
NoRepair = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
InstallDate = {YYYYMMDD}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
MajorVersion = 2

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
MinorVersion = 2

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
VersionMajor = 2

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
VersionMinor = 2

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1
EstimatedSize = {value}

Download Routine

This Potentially Unwanted Application connects to the following URL(s) to download its component file(s):

• https://gsf-sp.{BLOCKED}nic.com/{random}/DWGDXFConverter.exe?signature={random}&expires={value}&url=https%3A%2F%2Fen.softonic.com&filename=DWGDXFConverter.exe

It saves the files it downloads using the following names:

• %User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter_exe.parts
• %User Temp%\DWGDXFConverter_exe_{random}\DWGDXFConverter.exe
• {Installation location}\DWG DXF Converter\DWGDXFConverter.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{314D60C6-DC19-4C82-9E50-EEBE969E0287}_is1

It connects to the following website to send and receive information:

• https://{BLOCKED}ud.com/api/installer/firstCall.php
• https://{BLOCKED}ud.com/api/installer/campaignCall.php
• https://{BLOCKED}ud.com/api/installer/updateStatus.php
• https://{BLOCKED}ud.com/api/file/?action=get&fid={randomly generated ID}
• https://www.{BLOCKED}offers.de/new-installer/thankyousft.html
• https://www.{BLOCKED}offers.de/new-installer/thank-you-for-downloading-with-sft.png

It does the following:

• It may display ads it offers to install in the system
• Installation location is customizable, default is %ProgramFiles%
• It displays an interface to convert DWG files to DXF files and vice versa