PUA.Win32.InstallCore.WFEJMO
AdWare.Win32.Vosteran.heur(KASPERSKY);
Windows
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet
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.
TECHNICAL DETAILS
811,056 bytes
EXE
Yes
28 May 2019
Connects to URLs/IPs, Displays windows
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%\ish{random number}\css\ie6_main.css
- %User Temp%\ish{random number}\css\main.css
- %User Temp%\ish{random number}\css\sdk-ui\browse.css
- %User Temp%\ish{random number}\css\sdk-ui\button.css
- %User Temp%\ish{random number}\css\sdk-ui\checkbox.css
- %User Temp%\ish{random number}\css\sdk-ui\images\button-bg.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg-corner.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg2.png
- %User Temp%\ish{random number}\css\sdk-ui\progress-bar.css
- %User Temp%\ish{random number}\csshover3.htc
- %User Temp%\ish{random number}\dat\upd.DAT
- %User Temp%\ish{random number}\form.bmp.Mask
- %User Temp%\ish{random number}\images\bg.png
- %User Temp%\ish{random number}\images\Close.png
- %User Temp%\ish{random number}\images\Close_Hover.png
- %User Temp%\ish{random number}\images\Color_Button.png
- %User Temp%\ish{random number}\images\Color_Button_Hover.png
- %User Temp%\ish{random number}\images\Grey_Button.png
- %User Temp%\ish{random number}\images\Grey_Button_Hover.png
- %User Temp%\ish{random number}\images\Loader.gif
- %User Temp%\ish{random number}\images\Progress.png
- %User Temp%\ish{random number}\images\ProgressBar.png
- %User Temp%\ish{random number}\images\text-bg.png
- %User Temp%\ish{random number}\locale\DE.locale
- %User Temp%\ish{random number}\locale\EN.locale
- %User Temp%\ish{random number}\locale\ES.locale
- %User Temp%\ish{random number}\locale\FR.locale
- %User Temp%\ish{random number}\locale\IT.locale
- %User Temp%\ish{random number}\locale\PL.locale
- %User Temp%\ish{random number}\locale\PT.locale
- %User Temp%\ish{random number}\locale\RU.locale
- %User Temp%\ish{random number}\locale\UA.locale
- %User Temp%\ish{random number}\bootstrap_58853.html
- %Common Programs%\FlvPlayer\FlvPlayer.lnk
- %Common Programs%\FlvPlayer\Uninstall.lnk
(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).. %Common Programs% is the folder that contains common program groups for all users, which is usually C:\Documents and Settings\All Users\Start Menu\Programs on Windows 2000, XP, and Server 2003, or C:\ProgramData\Microsoft\Windows\Start Menu\Programs on Windows Vista, 7, and 8.)
Other Details
This Potentially Unwanted Application adds the following lines or registry entries as part of its routine:
- HKEY_LOCAL_MACHINE\SOFTWARE\FlvPlayer
Path = "%Application Data%\FlvPlayer" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
DisplayName = "FlvPlayer" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
DisplayVersion = "${VERSION}" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
Publisher = "" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
URLInfoAbout = "${URL}" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
DisplayIcon = "%Application Data%\FlvPlayer\uninstall.exe" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
UninstallString = "%Application Data%\FlvPlayer\uninstall.exe" - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
NoModify = 1 - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
NoRepair = 1
- HKEY_LOCAL_MACHINE\SOFTWARE\FlvPlayer
(Note: %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 connects to the following website to send and receive information:
- http://rp.{BLOCKED}tinstall.com/?pcrc={CRC value}&v={version}
- http://os.{BLOCKED}tinstall.com/MEDIA_YTZ/?v={version}&c=1619676736
- http://os2.{BLOCKED}tinstall.com/Aff-AD/?v={Version}&c=1619676736
- http://emb.{BLOCKED}tinstall.com/sk-logabpstatus.php?a={information for logs}=false
It does the following:
- It displays the following during installation:
SOLUTION
9.850
2.175.00
16 May 2019
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
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 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.
- In HKEY_LOCAL_MACHINE\SOFTWARE\FlvPlayer
- Path = "%Application Data%\FlvPlayer"
- Path = "%Application Data%\FlvPlayer"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- DisplayName = "FlvPlayer"
- DisplayName = "FlvPlayer"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- DisplayVersion = "${VERSION}""
- DisplayVersion = "${VERSION}""
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- Publisher = ""
- Publisher = ""
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- URLInfoAbout = "${URL}"
- URLInfoAbout = "${URL}"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- DisplayIcon = "%Application Data%\FlvPlayer\uninstall.exe"
- DisplayIcon = "%Application Data%\FlvPlayer\uninstall.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- UninstallString = "%Application Data%\FlvPlayer\uninstall.exe"
- UninstallString = "%Application Data%\FlvPlayer\uninstall.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- NoModify = "1"
- NoModify = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\FlvPlayer
- NoRepair = "1"
- NoRepair = "1"
Step 4
Search and delete these files
- %User Temp%\ish{random number}\css\ie6_main.css
- %User Temp%\ish{random number}\css\main.css
- %User Temp%\ish{random number}\css\sdk-ui\browse.css
- %User Temp%\ish{random number}\css\sdk-ui\button.css
- %User Temp%\ish{random number}\css\sdk-ui\checkbox.css
- %User Temp%\ish{random number}\css\sdk-ui\images\button-bg.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg-corner.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg.png
- %User Temp%\ish{random number}\css\sdk-ui\images\progress-bg2.png
- %User Temp%\ish{random number}\css\sdk-ui\progress-bar.css
- %User Temp%\ish{random number}\csshover3.htc
- %User Temp%\ish{random number}\dat\upd.DAT
- %User Temp%\ish{random number}\form.bmp.Mask
- %User Temp%\ish{random number}\images\bg.png
- %User Temp%\ish{random number}\images\Close.png
- %User Temp%\ish{random number}\images\Close_Hover.png
- %User Temp%\ish{random number}\images\Color_Button.png
- %User Temp%\ish{random number}\images\Color_Button_Hover.png
- %User Temp%\ish{random number}\images\Grey_Button.png
- %User Temp%\ish{random number}\images\Grey_Button_Hover.png
- %User Temp%\ish{random number}\images\Loader.gif
- %User Temp%\ish{random number}\images\Progress.png
- %User Temp%\ish{random number}\images\ProgressBar.png
- %User Temp%\ish{random number}\images\text-bg.png
- %User Temp%\ish{random number}\locale\DE.locale
- %User Temp%\ish{random number}\locale\EN.locale
- %User Temp%\ish{random number}\locale\ES.locale
- %User Temp%\ish{random number}\locale\FR.locale
- %User Temp%\ish{random number}\locale\IT.locale
- %User Temp%\ish{random number}\locale\PL.locale
- %User Temp%\ish{random number}\locale\PT.locale
- %User Temp%\ish{random number}\locale\RU.locale
- %User Temp%\ish{random number}\locale\UA.locale
- %User Temp%\ish{random number}\bootstrap_58853.html
- %Common Programs%\FlvPlayer\FlvPlayer.lnk
- %Common Programs%\FlvPlayer\Uninstall.lnk
Step 5
Remove PUA.Win32.InstallCore.WFEJMO by using its own Uninstall option
Step 6
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.InstallCore.WFEJMO. 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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