PUA.Win32.FusionCore.LW
Riskware/FusionCore (FORTINET); PUA.InstallCore (NORTON)
Windows
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
8,639,888 bytes
EXE
18 Jan 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.
It may be manually installed by a user.
Installation
This Potentially Unwanted Application drops the following files:
- %AppDataLocal%\FileZilla\default_cancel20x20.png
- %AppDataLocal%\FileZilla\default_cancel24x24.png
- %AppDataLocal%\FileZilla\default_close12x12.png
- %AppDataLocal%\FileZilla\default_compare20x20.png
- %AppDataLocal%\FileZilla\default_disconnect20x20.png
- %AppDataLocal%\FileZilla\default_dropdown12x12.png
- %AppDataLocal%\FileZilla\default_file16x16.png
- %AppDataLocal%\FileZilla\default_filter20x20.png
- %AppDataLocal%\FileZilla\default_find20x20.png
- %AppDataLocal%\FileZilla\default_folder16x16.png
- %AppDataLocal%\FileZilla\default_leds24x24.png
- %AppDataLocal%\FileZilla\default_localtreeview20x20.png
- %AppDataLocal%\FileZilla\default_logview20x20.png
- %AppDataLocal%\FileZilla\default_processqueue20x20.png
- %AppDataLocal%\FileZilla\default_queueview20x20.png
- %AppDataLocal%\FileZilla\default_reconnect20x20.png
- %AppDataLocal%\FileZilla\default_refresh20x20.png
- %AppDataLocal%\FileZilla\default_remotetreeview20x20.png
- %AppDataLocal%\FileZilla\default_server16x16.png
- %AppDataLocal%\FileZilla\default_sitemanager20x20.png
- %AppDataLocal%\FileZilla\default_speedlimits16x16.png
- %AppDataLocal%\FileZilla\default_synchronize20x20.png
- %Application Data%\FileZilla\filezilla.xml
- %Application Data%\FileZilla\filezilla.xml~
- %Application Data%\FileZilla\layout.xml
- %Application Data%\FileZilla\layout.xml~
- %Application Data%\FileZilla\queue.sqlite3
- %Application Data%\FileZilla\queue.sqlite3-journal
- %User Temp%\fzupdate_0274545e3ec451cc.tmp
- %User Temp%\nsjE8AA.tmp
- %User Temp%\nsn91B4.tmp
- %User Temp%\nsn91B5.tmp\System.dll
- %User Temp%\nsn91B5.tmp\UAC.dll
- %User Temp%\nsyE8BA.tmp\System.dll
- %User Temp%\nsyE8BA.tmp\UAC.dll
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local on 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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)
It adds the following processes:
- %Program Files%\FileZilla FTP Client\filezilla.exe
- %Downloads%\FileZilla_3.39.0_win32-setup.exe /update /NCRC
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), 7 (32-bit), and 8 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), 7 (64-bit), and 8 (64-bit).)
Other Details
This Potentially Unwanted Application connects to the following possibly malicious URL:
- http://5.{BLOCKED}.{BLOCKED}.205/
- http://cdneu.t{BLOCKED}ylaboratory.com/ofr/Ta{BLOCKED}sat/{BLOCKED}_09Feb17.cis
- http://cdnus.t{BLOCKED}ylaboratory.com/ofr/Ta{BLOCKED}sat/{BLOCKED}_09Feb17.cis
- http://img.t{BLOCKED}ylaboratory.com/img/Ta{BLOCKED}sat/15Feb17/v2_fs/{BLOCKED}.jpg
- http://os.t{BLOCKED}ylaboratory.com/FusionFileZilla/
- http://rp.t{BLOCKED}ylaboratory.com/
SOLUTION
9.850
2.141.00
24 Jan 2019
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
Identify and terminate files detected as PUA.Win32.FusionCore.LW
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 4
Search and delete these files
- %AppDataLocal%\FileZilla\default_cancel20x20.png
- %AppDataLocal%\FileZilla\default_cancel24x24.png
- %AppDataLocal%\FileZilla\default_close12x12.png
- %AppDataLocal%\FileZilla\default_compare20x20.png
- %AppDataLocal%\FileZilla\default_disconnect20x20.png
- %AppDataLocal%\FileZilla\default_dropdown12x12.png
- %AppDataLocal%\FileZilla\default_file16x16.png
- %AppDataLocal%\FileZilla\default_filter20x20.png
- %AppDataLocal%\FileZilla\default_find20x20.png
- %AppDataLocal%\FileZilla\default_folder16x16.png
- %AppDataLocal%\FileZilla\default_leds24x24.png
- %AppDataLocal%\FileZilla\default_localtreeview20x20.png
- %AppDataLocal%\FileZilla\default_logview20x20.png
- %AppDataLocal%\FileZilla\default_processqueue20x20.png
- %AppDataLocal%\FileZilla\default_queueview20x20.png
- %AppDataLocal%\FileZilla\default_reconnect20x20.png
- %AppDataLocal%\FileZilla\default_refresh20x20.png
- %AppDataLocal%\FileZilla\default_remotetreeview20x20.png
- %AppDataLocal%\FileZilla\default_server16x16.png
- %AppDataLocal%\FileZilla\default_sitemanager20x20.png
- %AppDataLocal%\FileZilla\default_speedlimits16x16.png
- %AppDataLocal%\FileZilla\default_synchronize20x20.png
- %Application Data%\FileZilla\filezilla.xml
- %Application Data%\FileZilla\filezilla.xml~
- %Application Data%\FileZilla\layout.xml
- %Application Data%\FileZilla\layout.xml~
- %Application Data%\FileZilla\queue.sqlite3
- %Application Data%\FileZilla\queue.sqlite3-journal
- %User Temp%\fzupdate_0274545e3ec451cc.tmp
- %User Temp%\nsjE8AA.tmp
- %User Temp%\nsn91B4.tmp
- %User Temp%\nsn91B5.tmp\System.dll
- %User Temp%\nsn91B5.tmp\UAC.dll
- %User Temp%\nsyE8BA.tmp\System.dll
- %User Temp%\nsyE8BA.tmp\UAC.dll
Step 5
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.FusionCore.LW. 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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