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Threat Database Potentially Unwanted Programs PUP.YoBrowser.B

PUP.YoBrowser.B

By CagedTech in Potentially Unwanted Programs

The detection of PUP.YoBrowser.B on your system indicates the presence of a potentially unwanted program (PUP) that may be causing issues with your browser and overall system performance. It's essential to understand the nature of this threat and take prompt action to remove it to prevent potential harm to your data and system security.

What Is PUP.YoBrowser.B?

PUP.YoBrowser.B is classified as a potentially unwanted program, which means it is not necessarily malicious but can still cause problems for users. PUPs often sneak onto systems through bundled software downloads or deceptive installation processes, and they can lead to a range of issues, including unwanted browser extensions, changed browser settings, and the collection of user data without consent. The term "YoBrowser" might suggest a relation to browser-related activities, but without specific details, it's crucial to approach removal with a broad strategy.

How PUP.YoBrowser.B Operates

PUPs like PUP.YoBrowser.B typically operate by integrating themselves into a system and then modifying settings or adding unwanted components. They might change the default search engine, homepage, or add toolbars that users do not want. These programs can also collect user data, such as browsing history or search queries, which can be used for targeted advertising or other purposes. The operation of PUP.YoBrowser.B would likely follow similar patterns, aiming to alter browser behavior for the benefit of its creators, potentially at the expense of the user's experience and privacy.

Symptoms of Infection

Symptoms of a PUP.YoBrowser.B infection can vary but commonly include unwanted changes to browser settings, such as a new homepage or default search engine that you did not set. You might also notice unwanted toolbars or extensions in your browser that you cannot remember installing. Additionally, an increase in pop-up ads or a general slowdown in browser performance could indicate the presence of a PUP. Since PUPs can collect user data, there might not be overt symptoms, making regular system checks and scans crucial for detection.

How to Remove PUP.YoBrowser.B

  1. Boot your computer in Safe Mode with Networking to prevent PUP.YoBrowser.B from loading and to give you a clean environment to work in.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all components of PUP.YoBrowser.B.
  3. Uninstall any suspicious programs that you do not recognize or that were installed around the time the issues started. Be cautious and ensure you are not removing necessary system components.
  4. Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any unwanted extensions or changes made by PUP.YoBrowser.B.
  5. Reboot your computer and perform another scan with your anti-malware tool to ensure that PUP.YoBrowser.B has been completely removed.

Conclusion

Removing PUP.YoBrowser.B requires careful attention to detail and a systematic approach to ensure all components are eliminated. By following the steps outlined above and maintaining good computing practices, such as regularly scanning your system and being cautious with downloads, you can protect your system from PUPs and other types of malware. Remember, prevention is key, so staying informed and using reputable security software can help safeguard your system against future threats.

Analysis Report

General information

Family Name: PUP.YoBrowser.B
Signature status: No Signature

Known Samples

MD5: d7ef32ca910cf605329b4aaf3d2b936c
SHA1: fb768e11aa3a2613d59199d07e86bf4c025ec15f
SHA256: FB7AECE004A7D7475712F495EC5BE1C31F0CCB712921A517FB240C933B2F61D6
File Size: 521.22 KB, 521216 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • File has TLS information
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
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  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • 2+ executable sections
  • dll
  • HighEntropy
  • x86

Block Information

Total Blocks: 1,902
Potentially Malicious Blocks: 308
Whitelisted Blocks: 1,500
Unknown Blocks: 94

Visual Map

0 0 0 x x x 0 0 0 0 0 0 0 0 0 0 0 0 ? ? x ? x ? x ? x ? x ? ? x x ? x ? x ? ? x x ? x ? ? x ? x x ? x ? ? x ? x x ? ? x ? x ? x ? x ? x ? x ? ? x x ? x ? x ? ? x x ? x ? ? x ? x x ? x ? ? x ? x x ? ? x x x ? x x x ? x x x x ? x x x ? x x x x x x 0 0 0 0 0 0 0 0 x x x x x x 0 0 0 0 0 0 0 0 x x x x x x x 0 x 0 x 0 0 x x x x 0 x 0 x x 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x x 0 0 0 0 x x 0 0 x 0 0 0 0 0 x x 0 0 x 0 0 x x x 0 x 0 0 0 x x 0 0 0 0 x 0 0 x x x x 0 0 x 0 0 0 x x 0 0 0 x x x x x 0 x x 0 x x x x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 x 0 0 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x x 0 x 0 x x 0 x x x x 0 0 0 0 0 0 0 x x 0 0 x x x x x x 0 0 0 0 0 0 0 0 0 0 x 0 x x 0 x x 0 0 0 0 0 0 0 0 0 x x 0 0 0 0 0 0 0 0 x 0 x 0 0 x 0 x 0 x x x 0 0 0 0 0 0 0 x 0 0 0 0 0 x x x x x x x x 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 x x 0 0 x x 0 x x x x x x x x x 0 x x 0 0 x 0 0 ? ? x 0 0 x x 0 x 0 x x x ? ? x x ? x ? x ? ? x x ? x ? ? x ? x x ? x ? ? x ? x x ? ? x ? x ? x x ? ? x ? x ? ? x x ? x ? x ? ? x x ? x ? ? x ? x x ? x ? ? x ? x x ? ? x ? x ? x x ? ? x ? ? x x x 0 0 0 0 0 0 0 0 0 0 x x 0 0 0 0 0 0 0 x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 x 0 0 0 x 0 0 0 x 0 x x x x x 0 x x x x 0 x 0 0 0 x x 0 0 x x 0 x x x 0 0 0 x 0 x x x 0 x x 0 x x ? x x 0 x 0 x 0 0 0 x x x x x 0 x 0 0 x 0 0 0 0 0 x 0 x 0 0 0 x 0 0 x 0 x x 0 x x x x x x x 0 0 x 0 0 0 x x x x x x x 0 x 0 x x x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 1 1 1 1 0 1 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ? x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 2 2 1 1 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 x x x x 0 x x x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtQueryAttributesFile
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  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWriteFile
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\fb768e11aa3a2613d59199d07e86bf4c025ec15f_0000521216.,LiQMAxHB

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