PUP.MSIL.Patcher.F

The detection of PUP.MSIL.Patcher.F on your system indicates the presence of a potentially unwanted program (PUP) that may compromise your computer's security and performance. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is PUP.MSIL.Patcher.F?

PUP.MSIL.Patcher.F is a type of malware that is categorized as a potentially unwanted program. This means that while it may not be as malicious as other types of malware, it can still cause significant problems for your computer and your personal data. PUPs are often installed unintentionally, and they can be difficult to remove without the right tools and expertise.

How PUP.MSIL.Patcher.F Operates

PUP.MSIL.Patcher.F, like other PUPs, operates by exploiting vulnerabilities in your system or by tricking you into installing it. Once installed, it can perform a variety of malicious actions, including collecting your personal data, displaying unwanted advertisements, and slowing down your computer's performance. It may also install additional malware or PUPs, making it even more challenging to remove.

It's crucial to note that PUPs can be highly persistent and may require specialized tools to detect and remove. They can also be bundled with other software, making it essential to be cautious when downloading and installing programs from the internet.

Symptoms of Infection

The symptoms of a PUP.MSIL.Patcher.F infection can vary, but common indicators include unwanted pop-ups, slow computer performance, and unfamiliar programs or toolbars installed on your browser. You may also notice that your browser's homepage or search engine has been changed without your consent. In some cases, you may not notice any symptoms at all, which is why regular scans with a reputable antivirus tool are essential.

• Unwanted advertisements or pop-ups
• Slow computer performance
• Unfamiliar programs or toolbars installed on your browser
• Changes to your browser's homepage or search engine

How to Remove PUP.MSIL.Patcher.F

1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to give you more control over the removal process.
2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove PUP.MSIL.Patcher.F and any other malware that may be present.
3. Uninstall any suspicious programs that you do not recognize or that were installed without your consent. Be cautious and only uninstall programs that you are sure are malicious or unnecessary.
4. Reset your browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings that may have been installed by the PUP.
5. Reboot your computer and perform another scan to ensure that the malware has been completely removed and that there are no remaining threats.

Conclusion

Removing PUP.MSIL.Patcher.F requires careful attention to detail and the right tools. By following the steps outlined above and maintaining good computing practices, such as regularly scanning your system for malware and being cautious when installing new software, you can protect your computer and your personal data from potentially unwanted programs and other types of malware. Remember, prevention is key, and staying informed about the latest threats and how to protect against them is essential in today's digital landscape.

Analysis Report

General information

Family Name:	PUP.MSIL.Patcher.F
Signature status:	No Signature

Known Samples

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Known Samples

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

MD5: a394e41b323b27ec6a243b99b228848c SHA1: 6528707a012f3c954e493178f04cc540f6d678ab SHA256: 9302A561DE6C02D9DB112904116572BA7D06E038ED3702EE1A3DE54C8761BB2D File Size: 2.03 MB, 2029056 bytes

MD5: 6bccf4694676c68feb23b6ea2a8fb36a SHA1: a4bc409454acd0d432ad6dc6b16bb54a2af2041f SHA256: BEF3DBE4B9106FDFE34F93F2F2A1EC08D595C2644717392E65B9A0BDBBF4A2AE File Size: 3.94 MB, 3941376 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 exports table
• File doesn't have security information
• File is .NET application
• File is 32-bit executable
• File is either console or GUI application
• File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
• 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 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.

Windows PE Version Information

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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
Assembly Version	1.0.0.0
Comments	Servername descripition
Company Name	Eldor2 https://web.com/
File Description	Eldor2 Patcher Servername
File Version	1.0.0.0
Internal Name	Cronos2.exe Patcher.exe
Legal Copyright	Copyright © 2017 Servername Copyright © 2025 Eldor2
Original Filename	Cronos2.exe Patcher.exe
Product Name	Eldor2 Patcher Servername
Product Version	1.0.0.0

File Traits

• .NET
• HighEntropy
• x86

Block Information

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Block Information

During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.

Total Blocks:	44
Potentially Malicious Blocks:	28
Whitelisted Blocks:	16
Unknown Blocks:	0

Visual Map

0 0 0 0 0 0 0 x x x 0 0 0 0 x x x x x x x x x x x 0 x x x x x 0 x 0 0 x 0 x x x x x x x

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

Similar Families

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Similar Families

This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.

• MSIL.Patcher.F

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
User Data Access	GetComputerNameEx GetUserDefaultLocaleName GetUserObjectInformation
Encryption Used	BCryptOpenAlgorithmProvider
Anti Debug	IsDebuggerPresent NtQuerySystemInformation