PUP.Optional.WirelessNetworkTool

Short bio

PUP.Optional.WirelessNetworkTool is Malwarebytes' detection name for a wireless network analyzer called WirelessNetView which is published by NirSoft.

Symptoms

Users my have seen  this type of screens during the installation:

and this entry in their list of installed Programs and Features:

Type and source of infection

PUP.Optional.WirelessNetworkTool can be downloaded from their website:

but some users report the application to be installed by bundlers.

Protection

Malwarebytes blocks PUP.Optional.WirelessNetworkTool

Remediation

Malwarebytes can detect and remove PUP.Optional.WirelessNetworkTool without further user interaction.

1. Please download Malwarebytes to your desktop.
2. Double-click MBSetup.exe and follow the prompts to install the program.
3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
4. Click on the Get started button.
5. Click Scan to start a Threat Scan.
6. Click Quarantine to remove the found threats.
7. Reboot the system if prompted to complete the removal process.

Malwarebytes removal log

A Malwarebytes log of removal will look similar to this:

Malwarebytes
www.malwarebytes.com
-Log Details-
Scan Date: 5/7/21
Scan Time: 9:17 AM
Log File: 49c08f02-af04-11eb-ac6d-080027235d76.json
-Software Information-
Version: 4.3.0.98
Components Version: 1.0.1273
Update Package Version: 1.0.40194
License: Premium
-System Information-
OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {username}-PC\{username}
-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 234154
Threats Detected: 4
Threats Quarantined: 4
Time Elapsed: 2 min, 45 sec
-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect
-Scan Details-
Process: 1
PUP.Optional.WirelessNetworkTool, C:\PROGRAM FILES (X86)\NIRSOFT\WIRELESSNETVIEW\WIRELESSNETVIEW.EXE, Quarantined, 16830, 299476, , , , , 71BDA7EEA00C51262AE0533F4D5B9031, 637175BEDFE6852886341E15C4D48241D7A58083A45272DF0AAC35469C653F6F
Module: 1
PUP.Optional.WirelessNetworkTool, C:\PROGRAM FILES (X86)\NIRSOFT\WIRELESSNETVIEW\WIRELESSNETVIEW.EXE, Quarantined, 16830, 299476, , , , , 71BDA7EEA00C51262AE0533F4D5B9031, 637175BEDFE6852886341E15C4D48241D7A58083A45272DF0AAC35469C653F6F
Registry Key: 0
(No malicious items detected)
Registry Value: 0
(No malicious items detected)
Registry Data: 0
(No malicious items detected)
Data Stream: 0
(No malicious items detected)
Folder: 0
(No malicious items detected)
File: 2
PUP.Optional.WirelessNetworkTool, C:\PROGRAM FILES (X86)\NIRSOFT\WIRELESSNETVIEW\WIRELESSNETVIEW.EXE, Quarantined, 16830, 299476, 1.0.40194, , ame, , 71BDA7EEA00C51262AE0533F4D5B9031, 637175BEDFE6852886341E15C4D48241D7A58083A45272DF0AAC35469C653F6F
PUP.Optional.WirelessNetworkTool, C:\USERS\{username}\DESKTOP\WIRELESSNETVIEW_SETUP.EXE, Quarantined, 16830, 299476, 1.0.40194, , ame, , 6B9E4A1C4051BF002865CC24619F3695, 33679EF67FC0D30EE5462FE1A4F1401B6A822A355719BABB018A49B75EDBE764
Physical Sector: 0
(No malicious items detected)
WMI: 0
(No malicious items detected)

(end)

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

• Open Malwarebytes for Windows.
• Click the Detection History
• Click the Allow List
• To add an item to the Allow List, click Add.
• Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
• Repeat this for any secondary files or folder(s) that belong to the software.