PUA.Win32.Installcore.MANHOBVI

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.

As of this writing, the said sites are inaccessible.

It connects to certain websites to send and receive information. It redirects browsers to certain sites. However, as of this writing, the said sites are inaccessible.

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 folders:

• %User Temp%\is{Random Characters}
• %User Temp%\IS{Random Characters}\css
• %User Temp%\IS{Random Characters}\css\sdk-ui
• %User Temp%\IS{Random Characters}\css\sdk-ui\images
• %User Temp%\IS{Random Characters}\dat
• %User Temp%\IS{Random Characters}\images
• %User Temp%\IS{Random Characters}\locale

(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).)

It drops the following copies of itself into the affected system:

• %User Temp%\ICReinstall_{malware file name}.exe

(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).)

It drops the following files:

• %User Temp%\{Random Characters}.log -> deleted afterwards
• %User Temp%\is{Random Characters}\css\ie6_main.css
• %User Temp%\is{Random Characters}\css\main.css
• %User Temp%\is{Random Characters}\css\sdk-ui\browse.css
• %User Temp%\is{Random Characters}\css\sdk-ui\button.css
• %User Temp%\is{Random Characters}\css\sdk-ui\checkbox.css
• %User Temp%\is{Random Characters}\css\sdk-ui\images\button-bg.png
• %User Temp%\is{Random Characters}\css\sdk-ui\images\progress-bg-corner.png
• %User Temp%\is{Random Characters}\css\sdk-ui\images\progress-bg.png
• %User Temp%\is{Random Characters}\css\sdk-ui\images\progress-bg2.png
• %User Temp%\is{Random Characters}\css\sdk-ui\progress-bar.css
• %User Temp%\is{Random Characters}\csshover3.htc
• %User Temp%\is{Random Characters}\dat\upd.DAT
• %User Temp%\is{Random Characters}\form.bmp.Mask
• %User Temp%\is{Random Characters}\images\Close.png
• %User Temp%\is{Random Characters}\images\Close_Hover.png
• %User Temp%\is{Random Characters}\images\Color_Button.png
• %User Temp%\is{Random Characters}\images\Color_Button_Hover.png
• %User Temp%\is{Random Characters}\images\Grey_Button.png
• %User Temp%\is{Random Characters}\images\Grey_Button_Hover.png
• %User Temp%\is{Random Characters}\images\Loader.gif
• %User Temp%\is{Random Characters}\images\Logo.png
• %User Temp%\is{Random Characters}\images\Progress.png
• %User Temp%\is{Random Characters}\images\ProgressBar.png
• %User Temp%\is{Random Characters}\images\text-bg.png
• %User Temp%\is{Random Characters}\locale\DE.locale
• %User Temp%\is{Random Characters}\locale\EN.locale
• %User Temp%\is{Random Characters}\locale\ES.locale
• %User Temp%\is{Random Characters}\locale\FR.locale
• %User Temp%\is{Random Characters}\locale\IT.locale
• %User Temp%\is{Random Characters}\locale\PL.locale
• %User Temp%\is{Random Characters}\locale\PT.locale
• %User Temp%\is{Random Characters}\locale\RU.locale
• %User Temp%\is{Random Characters}\locale\UA.locale
• %User Temp%\is{Random Characters}\bootstrap_{Random Numbers}.html -> deleted afterwards
• %Program Files%\is{Random Numbers}.log -> deleted afterwards
• %User Temp%\{Random Characters}.log -> deleted afterwards
• %User Temp%\{Random Characters}.log -> deleted afterwards
• %User Temp%\is{Random Numbers}\{Random Numbers}_stp.EXE
• %Desktop%\Continue File Opener Installation.lnk -> shortcut to %User Temp%\ICReinstall_{malware file name}.exe
• %User Temp%\is{Random Numbers}\{Random Numbers}_stp.EXE.part

(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).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 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).)

Download Routine

This Potentially Unwanted Application connects to the following URL(s) to download its component file(s):

• http://s3.{BLOCKED}aws.com/Tweaks/distros/FileOpenerSetupG.exe

As of this writing, the said sites are inaccessible.

Other Details

This Potentially Unwanted Application connects to the following website to send and receive information:

• http://os.{BLOCKED}openerapp.com/CM_DS/?v={version}&c={Random numbers}
• http://os2.{BLOCKED}openerapp.com/CM_DS/?v={version}&c={Random numbers}
• http://rp.{BLOCKED}openerapp.com/?pcrc={Random numbers}

It displays the following images:

It redirects browsers to the following sites:

• http://{BLOCKED}openerapp.com/file-opener/welcome/oc/?iv=0

However, as of this writing, the said sites are inaccessible.