PUA_FUSIONCORE.GD

September 12, 2017

Analysis by: Byron Jon Gelera

ALIASES:

a variant of Win32/FusionCore.P potentially unwanted (ESET-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.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

TECHNICAL DETAILS

File Size: 11,106,442 bytes

File Type: EXE

Memory Resident: No

Initial Samples Received Date: 05 Sep 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%\CravingExplorer
%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\isxdl.dll
%User Temp%\is-{random}.tmp\PQxLQBQ.dll
%User Temp%\is-{random}.tmp\CESubProcess.exe
%User Temp%\is-{random}.tmp\ja.xml
%User Temp%\is-{random}.tmp\api-ms-win-core-console-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-datetime-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-debug-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-errorhandling-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l2-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-handle-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-heap-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-interlocked-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-libraryloader-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-localization-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-memory-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-namedpipe-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processenvironment-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processthreads-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processthreads-l1-1-1.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-profile-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-rtlsupport-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-string-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-synch-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-synch-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-sysinfo-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-timezone-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-util-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-conio-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-convert-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-environment-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-filesystem-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-heap-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-locale-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-math-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-multibyte-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-private-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-process-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-runtime-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-stdio-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-string-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-time-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-utility-l1-1-0.dll
%User Temp%\is-{random}.tmp\GdiPlus.dll
%User Temp%\is-{random}.tmp\Lang-jp.dll
%User Temp%\is-{random}.tmp\mfc140u.dll
%User Temp%\is-{random}.tmp\mfcm140u.dll
%User Temp%\is-{random}.tmp\msvcp140.dll
%User Temp%\is-{random}.tmp\ucrtbase.dll
%User Temp%\is-{random}.tmp\vcruntime140.dll
%User Temp%\is-{random}.tmp\firefox.exe
%User Temp%\is-{random}.tmp\CESubProcess.exe
%User Temp%\is-{random}.tmp\ja.xml
%User Temp%\is-{random}.tmp\api-ms-win-core-console-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-datetime-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-debug-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-errorhandling-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-file-l2-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-handle-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-heap-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-interlocked-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-libraryloader-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-localization-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-memory-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-namedpipe-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processenvironment-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processthreads-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-processthreads-l1-1-1.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-profile-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-rtlsupport-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-string-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-synch-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-synch-l1-2-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-sysinfo-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-timezone-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-core-util-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-conio-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-convert-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-environment-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-filesystem-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-heap-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-locale-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-math-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-multibyte-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-private-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-process-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-runtime-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-stdio-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-string-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-time-l1-1-0.dll
%User Temp%\is-{random}.tmp\api-ms-win-crt-utility-l1-1-0.dll
%User Temp%\is-{random}.tmp\GdiPlus.dll
%User Temp%\is-{random}.tmp\Lang-jp.dll
%User Temp%\is-{random}.tmp\mfc140u.dll
%User Temp%\is-{random}.tmp\mfcm140u.dll
%User Temp%\is-{random}.tmp\msvcp140.dll
%User Temp%\is-{random}.tmp\ucrtbase.dll
%User Temp%\is-{random}.tmp\vcruntime140.dll
%User Temp%\is-{random}.tmp\firefox.exe
%User Temp%\is-{random}.tmp\SetupFooooo-tcraft.exe
%Favorites%\Fooooo - 検索、天気、ニュースが充実のスタートページ.url
%User Temp%\is-{random}.tmp\Fooooo.url
%Desktop%\Fooooo.url
%Program Files%\CravingExplorer\unins000.dat
%Program Files%\CravingExplorer\is-{random}.tmp
%Program Files%\CravingExplorer\img\alpha\addressbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\alpha\fotter\is-{random}.tmp
%Program Files%\CravingExplorer\img\alpha\searchbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\alpha\toolbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\addressbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\alert\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\app\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\fotter\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\statusbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\default\toolbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\simple-alpha\addressbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\simple-alpha\fotter\is-{random}.tmp
%Program Files%\CravingExplorer\img\simple-alpha\searchbar\is-{random}.tmp
%Program Files%\CravingExplorer\img\simple-alpha\toolbar\is-{random}.tmp
%Program Files%\CravingExplorer\lib\is-{random}.tmp
%Program Files%\CravingExplorer\locale\is-{random}.tmp
%Program Files%\CravingExplorer\site-script\is-{random}.tmp
%Program Files%\CravingExplorer\template\is-{random}.tmp
%Program Files%\CravingExplorer\is-{random}.tmp
%ProgramData%\Microsoft\Windows\Start Menu\Programs\CravingExplorer\Craving Explorer.lnk
%ProgramData%\Microsoft\Windows\Start Menu\Programs\CravingExplorer\Craving Explorer ‚ðƒAƒ“ƒCƒ“ƒXƒg[ƒ‹‚·‚é.lnk
%Desktop%\Craving Explorer.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\Craving Explorer.lnk
%Program Files%\CravingExplorer\unins000.dat
%Program Files%\CravingExplorer\unins000.exe
%Program Files%\CravingExplorer\Important.rtf
%Program Files%\CravingExplorer\License.rtf
%Program Files%\CravingExplorer\Readme.txt
%Program Files%\CravingExplorer\img\alpha\addressbar\go.ico
%Program Files%\CravingExplorer\img\alpha\fotter\convert-hot.ico
%Program Files%\CravingExplorer\img\alpha\fotter\convert.ico
%Program Files%\CravingExplorer\img\alpha\fotter\download-hot.ico
%Program Files%\CravingExplorer\img\alpha\fotter\download.ico
%Program Files%\CravingExplorer\img\alpha\searchbar\search.ico
%Program Files%\CravingExplorer\img\alpha\toolbar\DisableIcons.png
%Program Files%\CravingExplorer\img\alpha\toolbar\HotIcons.png
%Program Files%\CravingExplorer\img\alpha\toolbar\Icons.png
%Program Files%\CravingExplorer\img\default\addressbar\go.ico
%Program Files%\CravingExplorer\img\default\alert\cache.ico
%Program Files%\CravingExplorer\img\default\alert\convert.ico
%Program Files%\CravingExplorer\img\default\alert\download.ico
%Program Files%\CravingExplorer\img\default\alert\no_thumbnail.png
%Program Files%\CravingExplorer\img\default\app\About.png
%Program Files%\CravingExplorer\img\default\app\Download.png
%Program Files%\CravingExplorer\img\default\app\DownloadClose.png
%Program Files%\CravingExplorer\img\default\app\DownloadCloseHover.png
%Program Files%\CravingExplorer\img\default\app\Warning.png
%Program Files%\CravingExplorer\img\default\app\Web.ico
%Program Files%\CravingExplorer\img\default\app\WizardIcon.png
%Program Files%\CravingExplorer\img\default\fotter\cache-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\cache.ico
%Program Files%\CravingExplorer\img\default\fotter\contract.ico
%Program Files%\CravingExplorer\img\default\fotter\convert-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\convert.ico
%Program Files%\CravingExplorer\img\default\fotter\delete-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\delete.ico
%Program Files%\CravingExplorer\img\default\fotter\down-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\down.ico
%Program Files%\CravingExplorer\img\default\fotter\download-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\download.ico
%Program Files%\CravingExplorer\img\default\fotter\expand.ico
%Program Files%\CravingExplorer\img\default\fotter\up-hot.ico
%Program Files%\CravingExplorer\img\default\fotter\up.ico
%Program Files%\CravingExplorer\img\default\searchbar\craving.ico
%Program Files%\CravingExplorer\img\default\searchbar\dailymotion.ico
%Program Files%\CravingExplorer\img\default\searchbar\google.ico
%Program Files%\CravingExplorer\img\default\searchbar\nicovideo.ico
%Program Files%\CravingExplorer\img\default\searchbar\rakuten.ico
%Program Files%\CravingExplorer\img\default\searchbar\search.ico
%Program Files%\CravingExplorer\img\default\searchbar\yahoo.ico
%Program Files%\CravingExplorer\img\default\searchbar\youtube.ico
%Program Files%\CravingExplorer\img\default\statusbar\zoom.ico
%Program Files%\CravingExplorer\img\default\toolbar\DisableIcons.png
%Program Files%\CravingExplorer\img\default\toolbar\HotIcons.png
%Program Files%\CravingExplorer\img\default\toolbar\Icons.png
%Program Files%\CravingExplorer\img\simple-alpha\addressbar\go.ico
%Program Files%\CravingExplorer\img\simple-alpha\fotter\convert-hot.ico
%Program Files%\CravingExplorer\img\simple-alpha\fotter\convert.ico
%Program Files%\CravingExplorer\img\simple-alpha\fotter\download-hot.ico
%Program Files%\CravingExplorer\img\simple-alpha\fotter\download.ico
%Program Files%\CravingExplorer\img\simple-alpha\searchbar\search.ico
%Program Files%\CravingExplorer\img\simple-alpha\toolbar\DisableIcons.png
%Program Files%\CravingExplorer\img\simple-alpha\toolbar\HotIcons.png
%Program Files%\CravingExplorer\img\simple-alpha\toolbar\Icons.png
%Program Files%\CravingExplorer\lib\CEConvert.exe
%Program Files%\CravingExplorer\lib\COPYING.GPLv3
%Program Files%\CravingExplorer\lib\COPYING.Libvpx
%Program Files%\CravingExplorer\lib\Readme.txt
%Program Files%\CravingExplorer\locale\en.xml
%Program Files%\CravingExplorer\locale\ja.xml
%Program Files%\CravingExplorer\site-script\Readme.txt
%Program Files%\CravingExplorer\template\convert.xml
%Program Files%\CravingExplorer\app.ini
%Program Files%\CravingExplorer\api-ms-win-core-console-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-datetime-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-debug-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-errorhandling-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-file-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-file-l1-2-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-file-l2-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-handle-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-heap-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-interlocked-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-libraryloader-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-localization-l1-2-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-memory-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-namedpipe-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-processenvironment-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-processthreads-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-processthreads-l1-1-1.dll
%Program Files%\CravingExplorer\api-ms-win-core-profile-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-rtlsupport-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-string-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-synch-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-synch-l1-2-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-sysinfo-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-timezone-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-core-util-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-conio-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-convert-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-environment-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-filesystem-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-heap-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-locale-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-math-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-multibyte-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-private-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-process-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-runtime-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-stdio-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-string-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-time-l1-1-0.dll
%Program Files%\CravingExplorer\api-ms-win-crt-utility-l1-1-0.dll
%Program Files%\CravingExplorer\CESubProcess.exe
%Program Files%\CravingExplorer\concrt140.dll
%Program Files%\CravingExplorer\CravingExplorer.exe
%Program Files%\CravingExplorer\GdiPlus.dll
%Program Files%\CravingExplorer\Lang-jp.dll
%Program Files%\CravingExplorer\mfc140u.dll
%Program Files%\CravingExplorer\mfcm140u.dll
%Program Files%\CravingExplorer\msvcp140.dll
%Program Files%\CravingExplorer\ucrtbase.dll
%Program Files%\CravingExplorer\vcomp140.dll
%Program Files%\CravingExplorer\vcruntime140.dll

(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.. %Favorites% is the Favorites folder, where it usually is C:\Documents and Settings\{user name}\Favorites on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Favorites 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.. %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.. %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.. %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.)

Other System Modifications

This Potentially Unwanted Application adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Setup Version = "5.5.9 (a)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: App Path = "%Program Files%\CravingExplorer"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
InstallLocation = "%Program Files%\CravingExplorer\"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Icon Group = "CravingExplorer"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: User = "{username}"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Setup Type = "custom"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Selected Components = "craving_explorer,mcafee,fooooo_sethome,fooooo_createshorcut,dayznewsreader"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Deselected Components = "dayzweather"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Selected Tasks = "desktopicon,quicklaunchicon"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Deselected Tasks = ""

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Inno Setup: Language = "Japanese"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
DisplayName = "Craving Explorer Version 1.8.6"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
UninstallString = "%Program Files%\CravingExplorer\unins000.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
QuietUninstallString = ""%Program Files%\CravingExplorer\unins000.exe" /SILENT"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
DisplayVersion = "1.8.6.0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
Publisher = "T-Craft"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
URLInfoAbout = "http://www.crav-ing.com/"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
HelpLink = "http://www.crav-ing.com/"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
URLUpdateInfo = "http://www.crav-ing.com/"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
NoModify = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
NoRepair = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
MajorVersion = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
MinorVersion = 8

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
VersionMajor = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
VersionMinor = 8

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
EstimatedSize = 26003

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
CravingExplorer_is1
InstallDate = "{Date}"

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = http://www.fooooo.com/

(Note: The default value data of the said registry entry is {user defined}.)

Download Routine

This Potentially Unwanted Application saves the files it downloads using the following names:

%User Temp%\is-{random}.tmp\mcafee.exe
%User Temp%\is-{random}.tmp\dayznewsreader.exe

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

http://cravingexplorer.download.{BLOCKED}z.jp/files/mcss.exe
http://dayz.download.{BLOCKED}z.jp/files/dayz_news_reader.exe
http://tcraft.download.{BLOCKED}z.jp/?file=count_fooooo.php

SOLUTION

Minimum Scan Engine: 9.850

SSAPI PATTERN File: 1.873.00

SSAPI PATTERN Date: 14 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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
- CravingExplorer_is1

Step 4

Restore this modified registry value

[ Learn More ]

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- From: Start Page = "http://www.fooooo.com/"
  To: Start Page = "{user defined}"

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%\CravingExplorer
%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.

%Favorites%\Fooooo - 検索、天気、ニュースが充実のスタートページ.url
%Desktop%\Fooooo.url
%ProgramData%\Microsoft\Windows\Start Menu\Programs\CravingExplorer\Craving Explorer.lnk
%ProgramData%\Microsoft\Windows\Start Menu\Programs\CravingExplorer\Craving Explorer ‚ðƒAƒ“ƒCƒ“ƒXƒg[ƒ‹‚·‚é.lnk
%Desktop%\Craving Explorer.lnk
%Application Data%\Microsoft\Internet Explorer\Quick Launch\Craving Explorer.lnk

Step 7

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

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