Analysis by: Raighen Sanchez
ALIASES:

HEUR:RiskTool.Win32.SystemTweaker.gen (KASPERSKY)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 3,896,096 bytes
File Type: EXE
Initial Samples Received Date: 22 Apr 2024
Payload: Drops files, Modifies system registry

Arrival Details

This Trojan 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 Trojan drops the following files:

  • %Program Files%\DriverUpdaterPro\unins000.dat
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Desktop%\DriverUpdaterPro.lnk
  • %Application Data%\Microsoft\Internet Explorer\Quick Launch\DriverUpdaterPro.lnk
  • %Programs%\DriverUpdaterPro\DriverUpdaterPro.lnk
  • %Programs%\DriverUpdaterPro\DriverUpdaterPro\Uninstall DriverUpdaterPro.lnk
  • %Program Files%\DriverUpdaterPro\unins000.msg
  • %Program Files%\DriverUpdaterPro\unins000.dat

(Note: %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).. %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).. %Programs% is the folder that contains the user’s program groups, which is usually C:\Windows\Start Menu\Programs or C:\Documents and Settings\{User name}\Start Menu\Programs on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu\Programs on Windows Vista, 7, and 8.)

Other System Modifications

This Trojan adds the following registry keys as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
{A5510462-F6F1-4546-A573-E296FEE4BB6A}_is1

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 19.306.01
FIRST VSAPI PATTERN DATE: 28 Apr 2024
VSAPI OPR PATTERN File: 19.307.00
VSAPI OPR PATTERN Date: 29 Apr 2024

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 this file

[ 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.
  •  %Program Files%\DriverUpdaterPro\unins000.dat
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Program Files%\DriverUpdaterPro\is-{random}.tmp
  • %Desktop%\DriverUpdaterPro.lnk
  • %Application Data%\Microsoft\Internet Explorer\Quick Launch\DriverUpdaterPro.lnk
  • %Programs%\DriverUpdaterPro\DriverUpdaterPro.lnk
  • %Programs%\DriverUpdaterPro\DriverUpdaterPro\Uninstall  DriverUpdaterPro.lnk
  • %Program Files%\DriverUpdaterPro\unins000.msg
  • %Program Files%\DriverUpdaterPro\unins000.dat

Step 4

Delete this registry key

[ Learn More ]

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{A5510462-F6F1-4546-A573-E296FEE4BB6A}_is1

Step 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.SYSTEMTWEAKER.R002C0PDA24. 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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