Analysis by: Maria Emreen Viray

ALIASES:

Riskware/SpeedUpMyPC (FORTINET); HEUR:Hoax.Win32.Uniblue.gen (KASPERSKY)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: 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.

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

  TECHNICAL DETAILS

File Size: 1,277,936 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 16 Apr 2021
Payload: Displays graphics/image, Connects to URLs/IPs

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%\Setup Log {YYYY-MM-DD} #{log#}.txt
  • Temporary files (deleted afterwards):
    • %User Temp%\is-{5 random characters}.tmp\{malware name}.tmp
    • %User Temp%\is-{5 random characters}.tmp\_isetup\_shfoldr.dll
    • %User Temp%\is-{5 random characters}.tmp\InstallerExtensions.dll
    • %User Temp%\is-{5 random characters}.tmp\notcertified.bmp
    • %User Temp%\is-{5 random characters}.tmp\printer.bmp
    • %User Temp%\is-{5 random characters}.tmp\license.en.rtf
    • %User Temp%\is-{5 random characters}.tmp\banner_icon.bmp

(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:

  • "%User Temp%\is-{5 random characters}.tmp\{malware name}.tmp" /SL5="$B04E6,785468,542208,{malware path}\{malware name}.exe"
  • If file is successfully downloaded:
    • "%User Temp%\is-{5 random characters}.tmp\SpeedUpMyPC-standalone-setup.exe" /VERYSILENT /NORESTART /LANG=en /DIR="{set installation folder}" /TASKS=desktopicon,quicklaunchicon,allowtracking /PurchaseURL=http://www.uniblue.com/cm/installcore-ppi/speedupmypc/sp_jp_01/purchase/ /CreateRestorePoint=no /Launch=yes /LaunchDelay=0 /RecommendedByIntegratedImagePath= /ShouldEnableAnalytics=yes /EcommercePlatform=cleverbridge /TrackEventRecipient= /

Download Routine

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

  • http://download.{BLOCKED}e.com/product/sp/6.0.2.0/SpeedUpMyPC-standalone-setup.exe

It saves the files it downloads using the following names:

  • %User Temp%\is-{5 random characters}.tmp\SpeedUpMyPC-standalone-setup.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).)

Other Details

This Potentially Unwanted Application displays the following images:

  • Presents the following options before installation:
  • Message presented when download fails:

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

  SOLUTION

Minimum Scan Engine: 9.800
SSAPI PATTERN File: 2.401.00
SSAPI PATTERN Date: 22 Apr 2021

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

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.  
  • %User Temp%\Setup Log {YYYY-MM-DD} #{log#}.txt

Step 4

Scan your computer with your Trend Micro product to clean files detected as PUA.Win32.SpeedUpMyPc.AG. 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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