- Threat Encyclopedia
- Malware
- PUA.Win64.OpenCandy.AA
Windows
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.
7,881,487 bytes
EXE
Yes
23 Oct 2019
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 adds the following processes:
(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).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It creates the following folders:
(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).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %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 deletes the following files:
(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).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )
It adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
HKEY_CLASSES_ROOT\.cbr
HKEY_CLASSES_ROOT\.cbz
HKEY_CLASSES_ROOT\.cbt
HKEY_CLASSES_ROOT\.cb7
HKEY_CLASSES_ROOT\CDISPSHELL
HKEY_CLASSES_ROOT\CDISPSHELL\DefaultIcon
HKEY_CLASSES_ROOT\CDISPSHELL\shell\
open\command
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
HKEY_CLASSES_ROOT\CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}
HKEY_CLASSES_ROOT\CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}\
InprocServer32
HKEY_CLASSES_ROOT\CDispShell.CDISPSHELL
HKEY_CLASSES_ROOT\CDispShell.CDISPSHELL\Clsid
HKEY_CLASSES_ROOT\CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}\
ProgID
HKEY_CLASSES_ROOT\.cbr\shellex\
{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
HKEY_CLASSES_ROOT\.cbr\shellex\
{E357FCCD-A995-4576-B01F-234630154E96}
HKEY_CLASSES_ROOT\.cbz\shellex\
{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
HKEY_CLASSES_ROOT\.cbz\shellex\
{E357FCCD-A995-4576-B01F-234630154E96}
HKEY_CLASSES_ROOT\.cbt\shellex\
{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
HKEY_CLASSES_ROOT\.cbt\shellex\
{E357FCCD-A995-4576-B01F-234630154E96}
HKEY_CLASSES_ROOT\.cb7\shellex\
{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
HKEY_CLASSES_ROOT\.cb7\shellex\
{E357FCCD-A995-4576-B01F-234630154E96}
HKEY_CURRENT_USER\Software\CDisplayEx\
History
HKEY_CURRENT_USER\Software\CDisplayEx\
Comics
HKEY_CURRENT_USER\Software\CDisplayEx\
Options
HKEY_CURRENT_USER\Software\CDisplayEx\
Shortcuts
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = "\x88\x0b\x00\x00\x04\x1bb\xa1W+\xd5\x01"
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
SessionHash = "{random characters}"
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Sequence = "1"
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = "\x00\x00\x00\x00\x00\x00C"
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFilesHash = "{random characters}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbr
(Default) = "CDISPSHELL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbz
(Default) = "CDISPSHELL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbt
(Default) = "CDISPSHELL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cb7
(Default) = "CDISPSHELL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDISPSHELL
(Default) = "Comic archive"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDISPSHELL\DefaultIcon
(Default) = "%System Root%\Program Files\CDisplayEx\CDisplayEx.exe,0"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDISPSHELL\shell\open\
command
(Default) = "%System Root%\Program Files\CDisplayEx\CDisplayEx.exe %1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Setup Version = "5.5.5 (u)"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: App Path = "%System Root%\Program Files\CDisplayEx"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
InstallLocation = "%System Root%\Program Files\CDisplayEx"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Icon Group = "CDisplayEx"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: User = "Administrator"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Setup Type = "full"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Selected Components = "{random characters}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Deselected Components = "pdf\assoc"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Selected Tasks = "desktopicon,quicklaunchicon"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Deselected Tasks = ""
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Inno Setup: Language = "default"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
DisplayName = "CDisplayEx 1.10.33"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
DisplayIcon = "%System Root%\Program Files\CDisplayEx\cdisplayex.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
UninstallString = "%System Root%\Program Files\CDisplayEx\unins000.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
QuietUninstallString = "%System Root%\Program Files\CDisplayEx\unins000.exe /SILENT"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
Publisher = "Progdigy Software S.A.R.L."
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
URLInfoAbout = "https://www.{BLOCKED}ayex.com"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
NoModify = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
NoRepair = "1"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
InstallDate = "20190625"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CDisplayEx_is1
EstimatedSize = "20569"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}
(Default) = ""
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}\InprocServer32
(Default) = "%System Root%\PROGRA~1\CDISPL~1\CDISPS~1.DLL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}\InprocServer32
ThreadingModel = "Apartment"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDispShell.CDISPSHELL
(Default) = ""
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CDispShell.CDISPSHELL\Clsid
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{EF7605D6-C512-4F90-827B-5DE32DAB94F7}\ProgID
(Default) = "CDispShell.CDISPSHELL"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbr\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbr\shellex\{E357FCCD-A995-4576-B01F-234630154E96}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbz\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbz\shellex\{E357FCCD-A995-4576-B01F-234630154E96}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbt\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cbt\shellex\{E357FCCD-A995-4576-B01F-234630154E96}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cb7\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.cb7\shellex\{E357FCCD-A995-4576-B01F-234630154E96}
(Default) = "{EF7605D6-C512-4F90-827B-5DE32DAB94F7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Shell Extensions\
Approved
{EF7605D6-C512-4F90-827B-5DE32DAB94F7} = "CDISPSHELL Extension"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer
GlobalAssocChangedCounter = "41"
HKEY_CURRENT_USER\Software\CDisplayEx\
History
(Default) = "0"
HKEY_CURRENT_USER\Software\CDisplayEx\
Comics
lastclean = "\x00\x00\x00\x00 O\xe5@"
It deletes the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\RegFilesHash
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\RegFiles0000
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\Sequence
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\SessionHash
HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000\Owner
Dropping Routine
This Potentially Unwanted Application drops the following files:
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %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).. %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 connects to the following possibly malicious URL:
This report is generated via an automated analysis system.
9.850
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 2
Identify and terminate files detected as PUA.Win64.OpenCandy.AA
Step 3
Delete this registry key
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.
Step 4
Delete this registry value
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.
Step 5
Search and delete these components
Step 6
Search and delete these folders
Step 7
Scan your computer with your Trend Micro product to delete files detected as PUA.Win64.OpenCandy.AA. 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:
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.
Step 9
Restore these deleted registry keys/values from backup
*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.