PUP.Baidu.A

The detection of PUP.Baidu.A on your system indicates the presence of a potentially unwanted program (PUP) that may be causing issues with your computer's performance and security. It is essential to understand the nature of this threat and take appropriate steps to remove it to prevent potential harm.

What Is PUP.Baidu.A?

PUP.Baidu.A is a type of potentially unwanted program that may have been installed on your system without your knowledge or consent. PUPs are software applications that may not be malicious in nature but can still cause problems, such as displaying unwanted advertisements, collecting user data, or altering system settings. The name PUP.Baidu.A suggests that it may be related to the Baidu search engine or other Baidu services, but it is crucial to note that the presence of this PUP does not necessarily imply a direct connection to the legitimate Baidu company.

How PUP.Baidu.A Operates

PUP.Baidu.A, like other PUPs, can operate in various ways, including displaying unwanted advertisements, redirecting search results, or collecting user data. It may also alter system settings, such as changing the default search engine or homepage, or installing additional software without user consent. PUPs can be installed through various means, including bundled software installations, infected downloads, or exploited vulnerabilities.

Symptoms of Infection

Systems infected with PUP.Baidu.A may exhibit various symptoms, including unwanted advertisements, slow system performance, or unexpected changes to system settings. Users may also notice unusual search results or redirected web pages. In some cases, the PUP may collect user data, such as browsing history or search queries, which can be used for targeted advertising or other malicious purposes.

• Unwanted advertisements or pop-ups
• Slow system performance or freezes
• Unexpected changes to system settings, such as default search engine or homepage
• Redirected search results or web pages
• Collection of user data, such as browsing history or search queries

How to Remove PUP.Baidu.A

1. Boot your system in Safe Mode with Networking to prevent the PUP from loading and to allow for internet access.
2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove the PUP and any associated files or registry entries.
3. Uninstall any suspicious programs or applications that may be related to the PUP.
4. Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any altered settings or extensions.
5. Reboot your system and perform another full scan to ensure that the PUP has been completely removed.

Conclusion

Removing PUP.Baidu.A from your system is essential to prevent potential harm and restore your computer's performance and security. By following the steps outlined above and using reputable anti-malware tools, you can effectively remove this PUP and protect your system from similar threats in the future. It is also crucial to practice safe computing habits, such as avoiding suspicious downloads and being cautious when installing software, to prevent PUPs and other malware from infecting your system.

Analysis Report

General information

Family Name:	PUP.Baidu.A
Signature status:	Root Not Trusted

Known Samples

i

Known Samples

This section lists other file samples believed to be associated with this family.

MD5: a2b5ea80c664ecc90fdc51b167473831 SHA1: 59150fdf9d7e0db717d37c91123c26913a5f5195 SHA256: 4ED646E8479D320801E9CBBE6CCCDF95C4594DAB1583A4E2A0855FC1E3BE161F File Size: 493.58 KB, 493576 bytes

MD5: ae15de52d9e73318019235bda5510785 SHA1: ed1fb1806685e8e46762262336db37ae41efa5b9 SHA256: CE8FA4AB181503378D34597031BE8D9F58E6B0909E6C873CE066FD9A1965FD63 File Size: 541.42 KB, 541424 bytes

Windows Portable Executable Attributes

i

Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• File doesn't have "Rich" header
• File doesn't have debug information
• File doesn't have exports table
• File doesn't have relocations 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)
• File is not packed
• IMAGE_FILE_DLL is not set inside PE header (Executable)

Show More

• IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

i

File Icons

This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.

Windows PE Version Information

i

Windows PE Version Information

This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.

Name	Value
File Description	BaiduPlayer Setup HiPlayer Setup
File Version	1.19.0.108 1.18.1.25
Legal Copyright	Copyright (c) Baidu Company Copyright (c) Hi Company
Product Name	BaiduPlayer Setup HiPlayer Setup
Product Version	1.19.0.108 1.18.1.25

Digital Signatures

i

Digital Signatures

This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.

Signer	Root	Status
Baidu (China) Co., Ltd.	GlobalSign CodeSigning CA - G2	Root Not Trusted
Shenzhen Enode Technology Co., Ltd.	VeriSign Class 3 Code Signing 2010 CA	Root Not Trusted

File Traits

• dll
• x86

Files Modified

i

Files Modified

This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.

File	Attributes
c:\users\user\appdata\local\temp\nsabcbe.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\nsla72d.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\nsla817.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\nsla818.tmp\installoptions.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsla818.tmp\iospecial.ini	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\nsla818.tmp\iospecial.ini	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsla818.tmp\modern-header.bmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsla818.tmp\modern-wizard.bmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsla818.tmp\nsskinengine.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nsla818.tmp\system.dll	Generic Write,Read Attributes

Show More

c:\users\user\appdata\local\temp\nslbde8.tmp\installoptions.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nslbde8.tmp\iospecial.ini	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\nslbde8.tmp\iospecial.ini	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nslbde8.tmp\modern-header.bmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nslbde8.tmp\modern-wizard.bmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nslbde8.tmp\nsskinengine.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nslbde8.tmp\system.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nswbdd8.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete
c:\users\user\appdata\local\temp\~nsu.tmp\au_.exe	Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144

Registry Modifications

i

Registry Modifications

This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.

Key::Value	Data	API Name
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	\??\C:\Users\Ztmvhdnv\AppData\Local\Temp\~nsu.tmp\Au_.exe	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	\??\C:\Users\Ztmvhdnv\AppData\Local\Temp\~nsu.tmp\Au_.exe\??\C:\Users\Ztmvhdnv\AppData\Local\Temp\~nsu.tmp	RegNtPreCreateKey
HKLM\system\controlset001\control\session manager::pendingfilerenameoperations	*1\??\C:\Windows\SystemTemp\MicrosoftEdgeUpdate.exe.old5af52*1\??\C:\Windows\SystemTemp\CopilotUpdate.exe.old5af62*1\??\C:\P	RegNtPreCreateKey

Windows API Usage

i

Windows API Usage

This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.

Category	API
Process Shell Execute	CreateProcess
Other Suspicious	AdjustTokenPrivileges

Shell Command Execution

i

Shell Command Execution

This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.

"C:\Users\Ztmvhdnv\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=c:\users\user\downloads\

"C:\Users\Uubgfxgz\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=c:\users\user\downloads\