PUA.Win32.DriverUpdater.BN
Riskware/Slimware (FORTINET)
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.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
1,015,648 bytes
EXE
No
22 Mar 2022
Connects to URLs/IPs, Downloads files
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%\{random characters}.tmp
(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 System Modifications
This Potentially Unwanted Application adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc
MachineID = {Hex values}
Download Routine
This Potentially Unwanted Application connects to the following URL(s) to download its component file(s):
- http://download.{BLOCKED}update.net/{OS Version}/x86/DriverUpdate-setup.msi.bz2
Other Details
This Potentially Unwanted Application adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc
It does the following:
- It connects to the following URL to send and receive information regarding installation:
- http://trk.{BLOCKED}reutilities.com/ulc.php?ev={Installer Event}&upl={Encoded information}&machineId={Machine ID}&platformOS={Operating System}&platformOSVersion={OS Version}&productVersion={Product version}&msBclVersion={Bcl Version}
- http://trk.{BLOCKED}reutilities.com/ulc.php?ev={Installer Event}&upl={Encoded information}&machineId={Machine ID}&platformOS={Operating System}&platformOSVersion={OS Version}&productVersion={Product version}
- http://trk.{BLOCKED}reutilities.com/ulc.php?ev={Installer Event}&upl={Encoded information}&machineId={Machine ID}&platformOS={Operating System}&platformOSVersion={OS Version}&productVersion={Product version}&errorType={Error Type}&errorCode={Error Code}&action={action}
- It sends the following information regarding installation:
- Installer event
- Default browser information (e.g. browser name, browser language)
- Operating system information (e.g. name, version)
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.800
2.499.00
24 Mar 2022
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- TROJ.Win32.TRX.XXPE50FFF054
Step 2
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 3
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 4
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\SlimWare Utilities Inc
- MachineID = {Hex values}
- MachineID = {Hex values}
Step 5
Delete this registry key
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.
- HKEY_LOCAL_MACHINE\SOFTWARE\SlimWare Utilities Inc
Step 6
Search and delete this file
- %User Temp%\{random characters}.tmp
*Note: Read the following Microsoft page if these steps do not work on Windows 7 and Windows Server 2008 (R2).
Step 7
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.DriverUpdater.BN. 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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