PUA.Win32.InstallBrain.AJ

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. 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 drops the following files:

• %User Temp%\installer\qrjatydimo
• %User Temp%\installer\gui\ajax-loader.gif
• %User Temp%\installer\gui\ajax-loader2.gif
• %User Temp%\installer\gui\ib\arrow.gif
• %User Temp%\installer\gui\ib\b-bg.gif
• %User Temp%\installer\gui\ib\b3.gif
• %User Temp%\installer\gui\ib\b4.gif
• %User Temp%\installer\gui\ib\lbg-bottom.gif
• %User Temp%\installer\gui\ib\lbg-top.gif
• %User Temp%\installer\gui\ib\lbg.gif
• %User Temp%\installer\gui\ib\trust.gif
• %User Temp%\installer\gui\ib\center2.jpg
• %User Temp%\installer\gui\check.jpg
• %User Temp%\installer\gui\ib\mid.jpg
• %User Temp%\installer\gui\pb-bg-left.jpg
• %User Temp%\installer\gui\pb-bg-right.jpg
• %User Temp%\installer\gui\pb-bg.jpg
• %User Temp%\installer\gui\red-pb-act-left.jpg
• %User Temp%\installer\gui\red-pb-act-right.jpg
• %User Temp%\installer\gui\red-pb-act.jpg
• %User Temp%\installer\gui\ib\arrow.png
• %User Temp%\installer\gui\ib\btn.png
• %User Temp%\installer\gui\ib\btn2.png
• %User Temp%\installer\gui\ib\corn1.png
• %User Temp%\installer\gui\ib\corn2.png
• %User Temp%\installer\gui\ib\corn3.png
• %User Temp%\installer\gui\ib\corn4.png
• %User Temp%\installer\gui\page_3118_attr_3.png
• %User Temp%\installer\gui\page_3119_attr_3.png
• %User Temp%\installer\gui\page_3119_feature_835.png
• %User Temp%\installer\gui\page_3122_attr_3.png
• %User Temp%\installer\gui\page_3123_attr_3.png
• %User Temp%\installer\gui\page_3468_attr_3.png
• %User Temp%\installer\gui\page_3555_attr_15.png
• %User Temp%\installer\gui\page_3555_attr_3.png
• %User Temp%\installer\gui\page_3630_attr_3.png
• %User Temp%\installer\gui\page_3630_feature_.png
• %User Temp%\installer\gui\page_3631_attr_3.png
• %User Temp%\installer\gui\page_3632_attr_3.png
• %User Temp%\installer\gui\page_3633_attr_3.png
• %User Temp%\installer\gui\page_3885_attr_3.png
• %User Temp%\installer\gui\page_4001_attr_3.png
• %User Temp%\installer\gui\template_40.png
• %User Temp%\installer\gui\page_3118_attr_46.bmp
• %User Temp%\installer\gui\page_3119_attr_46.bmp
• %User Temp%\installer\gui\page_3122_attr_46.bmp
• %User Temp%\installer\gui\page_3123_attr_46.bmp
• %User Temp%\installer\gui\page_3468_attr_46.bmp
• %User Temp%\installer\gui\page_3555_attr_46.bmp
• %User Temp%\installer\gui\page_3630_attr_46.bmp
• %User Temp%\installer\gui\page_3631_attr_46.bmp
• %User Temp%\installer\gui\page_3632_attr_46.bmp
• %User Temp%\installer\gui\page_3633_attr_46.bmp
• %User Temp%\installer\gui\page_3885_attr_46.bmp
• %User Temp%\installer\gui\page_4001_attr_46.bmp
• %User Temp%\installer\gui\speedanalysis.ico
• %User Temp%\installer\wizard.xml
• %User Temp%\installer\gui\3118.html
• %User Temp%\installer\gui\3119.html
• %User Temp%\installer\gui\3122.html
• %User Temp%\installer\gui\3123.html
• %User Temp%\installer\gui\3555.html
• %User Temp%\installer\gui\3630.html
• %User Temp%\installer\gui\3631.html
• %User Temp%\installer\gui\3632.html
• %User Temp%\installer\gui\3633.html
• %User Temp%\installer\gui\3885.html
• %User Temp%\installer\gui\4001.html
• %User Temp%\installer\gui\ib\main.css
• %User Temp%\installer\gui\ib\main_old.css
• %User Temp%\installer\gui\conditions\conditions.js
• %User Temp%\installer\gui\js\config.js
• %User Temp%\installer\gui\events\events.js
• %User Temp%\installer\gui\js\jquery-1.7.min.js
• %User Temp%\installer\gui\js\jquery.noselect.min.js
• %User Temp%\installer\gui\js\smart.js
• %User Temp%\installer\gui\js\utils.js
• %User Temp%\ibtmpc810619\intallLog
• %User Temp%\ibtmpc810619\app_{Random}.part
• %User Temp%\ibtmpc810619\app_{Random}.part
• %User Temp%\ibtmpc810619\app_{Random}.part
• %User Temp%\ibtmpc810619\app_{Random}.part
• %User Temp%\ibtmpc810619\app_{Random}.part
• %User Temp%\77Zip973867.exe
• %User Temp%\{Random}.bat

(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 adds the following processes:

• cmd /c %User Temp%\{random}.bat

(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).)

Information Theft

This Potentially Unwanted Application accesses the following websites to download its configuration/component files:

• http://www.{BLOCKED}tech.com/files/products/77zip920.exe
• http://www.{BLOCKED}tech.com/files/components/SpeedanAlysisSetupW.exe
• http://www.{BLOCKED}tech.com/files/products/PCPerformerSetup_genericv3_W.cf
• http://www.{BLOCKED}tech.com/files/components/ZulaGamesSetupW.exe
• http://www.{BLOCKED}tech.com/files/components/embededstub.exe

Other Details

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

• http://api.{BLOCKED}o.com/events
• http://inststats-1582571262.us-east-1.elb.{BLOCKED}aws.com/service/stats.php?sv=1

It does the following:

• It sends the following information during installation:
  • Time and Date Installed
  • Component ID
  • Session ID
  • Language
  • GCLID
  • Country
• It deletes all created files and folders after execution
• Displays the following during installation:
  

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