Analysis by: Byron Jon Gelera
ALIASES:

HEUR:AdWare.Win32.OpenCandy.gen (Kaspersky); Win32/OpenCandy potentially unsafe application (NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

File Size: 4,849,809 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 23 Aug 2017

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:

  • %Program Files%\CDBurnerXP
  • %User Temp%\is-{random}.tmp

(Note: %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.)

It drops the following files:

  • %User Temp%\is-{random}.tmp\{Malware Name}.tmp
  • %User Temp%\is-{random}.tmp\_isetup\_shfoldr.dll
  • %User Temp%\is-{random}.tmp\OCSetupHlp.dll
  • %Program Files%\CDBurnerXP\unins000.dat
  • %Program Files%\CDBurnerXP\is-{random}.tmp
  • %System%\drivers\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ar-JO\is-{random}.tmp
  • %Program Files%\CDBurnerXP\bg-BG\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ca\is-{random}.tmp
  • %Program Files%\CDBurnerXP\cs-CZ\is-{random}.tmp
  • %Program Files%\CDBurnerXP\de-DE\is-{random}.tmp
  • %Program Files%\CDBurnerXP\et-EE\is-{random}.tmp
  • %Program Files%\CDBurnerXP\el-GR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\es-ES\is-{random}.tmp
  • %Program Files%\CDBurnerXP\es-MX\is-{random}.tmp
  • %Program Files%\CDBurnerXP\da-DK\is-{random}.tmp
  • %Program Files%\CDBurnerXP\fi-FI\is-{random}.tmp
  • %Program Files%\CDBurnerXP\fr-FR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\he-IL\is-{random}.tmp
  • %Program Files%\CDBurnerXP\hr-HR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\hu-HU\is-{random}.tmp
  • %Program Files%\CDBurnerXP\id-ID\is-{random}.tmp
  • %Program Files%\CDBurnerXP\it-IT\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ja-JP\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ko-KR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\kk-KZ\is-{random}.tmp
  • %Program Files%\CDBurnerXP\lv-LV\is-{random}.tmp
  • %Program Files%\CDBurnerXP\lt-LT\is-{random}.tmp
  • %Program Files%\CDBurnerXP\nl-NL\is-{random}.tmp
  • %Program Files%\CDBurnerXP\nb-NO\is-{random}.tmp
  • %Program Files%\CDBurnerXP\pl-PL\is-{random}.tmp
  • %Program Files%\CDBurnerXP\pt-BR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\pt-PT\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ro-RO\is-{random}.tmp
  • %Program Files%\CDBurnerXP\ru-RU\is-{random}.tmp
  • %Program Files%\CDBurnerXP\sk-SK\is-{random}.tmp
  • %Program Files%\CDBurnerXP\sl-SI\is-{random}.tmp
  • %Program Files%\CDBurnerXP\sv-SE\is-{random}.tmp
  • %Program Files%\CDBurnerXP\tr-TR\is-{random}.tmp
  • %Program Files%\CDBurnerXP\uk-UA\is-{random}.tmp
  • %Program Files%\CDBurnerXP\zh-CHS\is-{random}.tmp
  • %Program Files%\CDBurnerXP\zh-CHT\is-{random}.tmp
  • %Program Files%\CDBurnerXP\is-{random}.tmp
  • %Program Files%\CDBurnerXP\Resources\is-{random}.tmp
  • %ProgramData%\Microsoft\Windows\Start Menu\Programs\CDBurnerXP.lnk
  • %System Root%\Users\Public\Desktop\CDBurnerXP.lnk
  • %Program Files%\CDBurnerXP\unins000.dat
  • %Program Files%\CDBurnerXP\unins000.exe
  • %Program Files%\CDBurnerXP\bass.dll
  • %Program Files%\CDBurnerXP\basswma.dll
  • %Program Files%\CDBurnerXP\bassmix.dll
  • %Program Files%\CDBurnerXP\bassflac.dll
  • %Program Files%\CDBurnerXP\basscd.dll
  • %Program Files%\CDBurnerXP\bass_ape.dll
  • %Program Files%\CDBurnerXP\bass_mpc.dll
  • %Program Files%\CDBurnerXP\basswv.dll
  • %Program Files%\CDBurnerXP\Bass.Net.dll
  • %Program Files%\CDBurnerXP\LogicNP.FileView.dll
  • %Program Files%\CDBurnerXP\LogicNP.FolderView.dll
  • %Program Files%\CDBurnerXP\LogicNP.ShComboBox.dll
  • %Program Files%\CDBurnerXP\NMSDVDXU.dll
  • %Program Files%\CDBurnerXP\NMSAccessU.exe
  • %Program Files%\CDBurnerXP\Interop.NMSDVDXLib.dll
  • %Program Files%\CDBurnerXP\StarBurnX12.dll
  • %Program Files%\CDBurnerXP\StarBurn.dll
  • %Program Files%\CDBurnerXP\vorbis.dll
  • %Program Files%\CDBurnerXP\vorbisfile.dll
  • %Program Files%\CDBurnerXP\ogg.dll
  • %Program Files%\CDBurnerXP\Interop.RocketDivision.StarBurnX.dll
  • %System%\drivers\StarOpen.sys
  • %Program Files%\CDBurnerXP\CsLib.dll
  • %Program Files%\CDBurnerXP\cdbxpp.exe.manifest
  • %Program Files%\CDBurnerXP\cdbxpp.exe.config
  • %Program Files%\CDBurnerXP\Native.CDBXP.manifest
  • %Program Files%\CDBurnerXP\Native.CsLib.manifest
  • %Program Files%\CDBurnerXP\updater.exe
  • %Program Files%\CDBurnerXP\cdbxpcmd.exe
  • %Program Files%\CDBurnerXP\cdbxpcmd.exe.manifest
  • %Program Files%\CDBurnerXP\cdbxpcmd.exe.config
  • %Program Files%\CDBurnerXP\cdbxpp.exe
  • %Program Files%\CDBurnerXP\CDBXP.dll
  • %Program Files%\CDBurnerXP\ar-JO\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\bg-BG\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\ca\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\cs-CZ\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\de-DE\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\et-EE\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\el-GR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\es-ES\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\es-MX\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\da-DK\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\fi-FI\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\fr-FR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\he-IL\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\hr-HR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\hu-HU\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\id-ID\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\it-IT\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\ja-JP\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\ko-KR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\kk-KZ\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\lv-LV\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\lt-LT\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\nl-NL\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\nb-NO\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\pl-PL\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\pt-BR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\pt-PT\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\ro-RO\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\ru-RU\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\sk-SK\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\sl-SI\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\sv-SE\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\tr-TR\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\uk-UA\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\zh-CHS\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\zh-CHT\cdbxpp.resources.dll
  • %Program Files%\CDBurnerXP\data.ico
  • %Program Files%\CDBurnerXP\audio.ico
  • %Program Files%\CDBurnerXP\iso.ico
  • %Program Files%\CDBurnerXP\Resources\audio_cover.jpg
  • %Program Files%\CDBurnerXP\Resources\data_cover.jpg

(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.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %ProgramData% is the Program Data folder, where it usually is C:\Program Files in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData 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.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Potentially Unwanted Application adds the following registry keys:

HKEY_CURRENT_USER\Software\CDBurnerXP

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDBurnerXPOpen

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.dxp

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.axp

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
dxp-file

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
axp-file

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccess

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccessU

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\StarOpen

It adds the following registry entries:

HKEY_CURRENT_USER\Software\CDBurnerXP
AppPath = "%Program Files%\CDBurnerXP"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDBurnerXPOpen
{default} = "CDBurnerXP (ISO)"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDBurnerXPOpen\DefaultIcon
{default} = "%Program Files%\CDBurnerXP\data.ico

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDBurnerXPOpen\shell\open\
command
{default} = "%Program Files%\CDBurnerXP\cdbxpp.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\EventHandlers\HandleBluRayBurningOnArrival
CDBurnerXP = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\EventHandlers\HandleHDDVDBurningOnArrival
CDBurnerXP = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\EventHandlers\HandleDVDBurningOnArrival
CDBurnerXP = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\EventHandlers\HandleCDBurningOnArrival
CDBurnerXP = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP
Action = "Burn a disc"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP
DefaultIcon = "%Program Files%\CDBurnerXP\cdbxpp.exe",0

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP
InvokeProgID = "CDBurnerXPOpen"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP
InvokeVerb = "open"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
AutoplayHandlers\Handlers\CDBurnerXP
Provider = "CDBurnerXP"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.dxp
{default} = "dxp-file"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
dxp-file
{default} = "CDBurnerXP Data Compilation"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
dxp-file\Shell\Open\
Command
{default} = ""%Program Files%\CDBurnerXP\cdbxpp.exe" /od "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
dxp-file\DefaultIcon
{default} = "%Program Files%\CDBurnerXP\data.ico"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.axp
{default} = "axp-file"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
axp-file
{default} = "CDBurnerXP Audio Compilation"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
axp-file\Shell\Open\
Command
{default} = ""%Program Files%\CDBurnerXP\cdbxpp.exe" /oa "%1""

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
axp-file\DefaultIcon
{default} = "%Program Files%\CDBurnerXP\audio.ico"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
allocatecdroms = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccess
Description = "Allows Non-Admins to use the CDBurnerXP Application"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccess
DisplayName = "NMSAccess"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccess
ImagePath = "%Program Files%\CDBurnerXP\NMSAccessU.exe"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\NMSAccessU
Description = "Allows Non-Admins to use the CDBurnerXP Application"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\StarOpen
Group = "Extended Base"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\StarOpen
ErrorControl = "1"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\StarOpen
Start = "3"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\StarOpen
Type = "2"

  SOLUTION

Minimum Scan Engine: 9.850
SSAPI PATTERN File: 1.875.00
SSAPI PATTERN Date: 21 Sep 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.

 
  • In HKEY_CURRENT_USER\Software
    • CDBurnerXP
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • CDBurnerXPOpen
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\Handlers
    • CDBurnerXP
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • .dxp
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • .axp
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • dxp-file
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • axp-file
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
    • NMSAccess
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
    • NMSAccessU
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
    • StarOpen

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\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\EventHandlers\HandleBluRayBurningOnArrival
    • CDBurnerXP = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\EventHandlers\HandleHDDVDBurningOnArrival
    • CDBurnerXP = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\EventHandlers\HandleDVDBurningOnArrival
    • CDBurnerXP = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\AutoplayHandlers\EventHandlers\HandleCDBurningOnArrival
    • CDBurnerXP = ""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
    • allocatecdroms = "0"

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.
  • %Program Files%\CDBurnerXP
  • %User Temp%\is-{random}.tmp

Step 6

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.
  • %System%\drivers\is-{random}.tmp
  • %ProgramData%\Microsoft\Windows\Start Menu\Programs\CDBurnerXP.lnk
  • %System Root%\Users\Public\Desktop\CDBurnerXP.lnk
  • %System%\drivers\StarOpen.sys

Step 7

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