PUP.TrueDownloader.A

The detection of PUP.TrueDownloader.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 and prevent future infections.

What Is PUP.TrueDownloader.A?

PUP.TrueDownloader.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 the classical sense but can still cause problems, such as displaying unwanted advertisements, collecting user data, or modifying system settings. The fact that it is detected as PUP.TrueDownloader.A suggests that it may be related to downloading or installing other software, but the exact nature of this threat can vary.

How PUP.TrueDownloader.A Operates

PUPs like PUP.TrueDownloader.A often operate by exploiting user behavior, such as clicking on suspicious links or downloading software from untrusted sources. Once installed, these programs can run in the background, consuming system resources and potentially causing other issues. They may also communicate with remote servers to download additional software or updates, which can further compromise system security. Understanding how PUPs operate is crucial in taking steps to prevent their installation and removing them when detected.

Symptoms of Infection

Systems infected with PUP.TrueDownloader.A may exhibit a range of symptoms, including but not limited to, slow system performance, unwanted advertisements or pop-ups, unexpected changes to browser settings or homepage, and the presence of unknown or suspicious programs in the list of installed applications. Users may also notice that their browser is being redirected to unwanted websites or that they are receiving spam notifications. These symptoms can vary in severity and may not always be immediately apparent, making regular system checks and monitoring essential for early detection.

How to Remove PUP.TrueDownloader.A

Removing PUP.TrueDownloader.A requires a systematic approach to ensure that all components of the unwanted program are eliminated from the system. The following steps are recommended:

1. Boot your computer in Safe Mode with Networking to prevent the PUP from running and to allow for internet access for downloading removal tools.
2. Download and run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of PUP.TrueDownloader.A and any other potential threats.
3. Uninstall any suspicious programs that were installed around the time the PUP was detected. Be cautious and only remove programs that you are certain are not needed.
4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any changes made by the PUP, such as altered homepage settings or unwanted extensions.
5. Reboot your computer and run another scan with your anti-malware tool to ensure that all remnants of the PUP have been removed.

Conclusion

The removal of PUP.TrueDownloader.A is crucial to maintaining the security and performance of your computer. By following the steps outlined above and maintaining good computing practices, such as regularly updating your operating system and applications, using strong antivirus software, and being cautious when downloading and installing new software, you can protect your system from potentially unwanted programs and other types of malware. Remember, prevention and regular system monitoring are key to avoiding the issues associated with PUPs and ensuring the long-term health of your computer.

Analysis Report

General information

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

Known Samples

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Known Samples

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

MD5: 8cbc39e9b073972d7bbf835ae99fbc68 SHA1: 86104cdf44da402b01955eab94947f89cb58a283 SHA256: 911360E2C05F73F334717FC833C6C3ABE629E222EE57AF770E08EF063557A602 File Size: 337.14 KB, 337136 bytes

Windows Portable Executable Attributes

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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)

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• IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

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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.

Digital Signatures

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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
File Downloader	AddTrust External CA Root	Root Not Trusted

File Traits

• dll
• x86

Files Modified

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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
\device\namedpipe\gmdasllogger	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nstdc2b.tmp\avd.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nstdc2b.tmp\header.bmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nstdc2b.tmp\nsdialogs.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\nstdc2b.tmp\system.dll	Generic Write,Read Attributes

Windows API Usage

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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 Manipulation Evasion	ReadProcessMemory
Anti Debug	IsDebuggerPresent
User Data Access	GetUserObjectInformation