Trojan.MSIL.Webshell.BPA
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 80 % (High) |
| Infected Computers: | 6 |
| First Seen: | August 21, 2025 |
| Last Seen: | April 14, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Webshell.BPA on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of malicious software designed to compromise the security and integrity of your computer. It is essential to understand the nature of this threat and take appropriate steps to remove it to prevent further damage.
Table of Contents
What Is Trojan.MSIL.Webshell.BPA?
Trojan.MSIL.Webshell.BPA is identified as a Trojan-type threat, which means it is a malicious program that disguises itself as legitimate software. Trojans are known for their ability to allow unauthorized access to a computer, enabling hackers to steal sensitive information, install additional malware, or disrupt system operation. The term "MSIL" refers to Microsoft Intermediate Language, which is a component of the .NET Framework, suggesting that this Trojan might be designed to interact with or exploit vulnerabilities within .NET applications. "Webshell" implies a capability to provide a remote interface for an attacker to access and control the infected system through web-based commands.
How Trojan.MSIL.Webshell.BPA Operates
Once installed on a system, Trojan.MSIL.Webshell.BPA can operate in stealth mode, making it difficult for users to detect its presence. It may create backdoors, allowing remote access to the infected computer, and could be used to distribute additional malware, spy on the user, or engage in other malicious activities. The specific operations of Trojan.MSIL.Webshell.BPA depend on its design and the intentions of its creators, but like other Trojans, it is likely to compromise system security and user privacy.
Symptoms of Infection
Symptoms of a Trojan.MSIL.Webshell.BPA infection can vary widely, depending on the malware's specific payload and the actions of its controllers. Common signs include slowed system performance, unexpected changes to system settings, appearance of unwanted programs or files, and increased network activity. Users might also notice that their personal files have been encrypted and are being held for ransom, or that their browser settings have been altered to display unwanted advertisements or redirect to suspicious websites.
How to Remove Trojan.MSIL.Webshell.BPA
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for a more effective removal process.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. Ensure the tool is updated with the latest definitions to improve the chances of detecting and removing the Trojan.
- Uninstall any recently installed programs that you do not recognize or that were installed around the time the malware was detected. Be cautious and only remove programs you are certain are safe to uninstall.
- Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the Trojan.
- After completing the above steps, reboot your computer and perform another full scan with your anti-malware tool to ensure that all components of the Trojan have been removed.
Conclusion
Removing Trojan.MSIL.Webshell.BPA requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. It is crucial to act promptly to prevent further damage and potential data theft. After removal, consider taking additional security measures such as updating your operating system and software, using strong, unique passwords, and being cautious with email attachments and links from unknown sources. Regularly scanning your system with reputable security software can help detect and remove malware before it causes significant harm.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Webshell.BPA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
cba87bd9a7cf06bd31cfef546da4dcd4
SHA1:
af8993537b629b207588deb4424a01f735068d9c
SHA256:
4326AEC5E41033ABC9BA1D29F2BF06EEE5AAAF6D279DCA53929D14E85AAB1A17
File Size:
318.46 KB, 318464 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have security information
- File is .NET application
- File is 32-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI 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 Traits
- .NET
- dll
- x86
Block Information
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: | 682 |
|---|---|
| Potentially Malicious Blocks: | 269 |
| Whitelisted Blocks: | 130 |
| Unknown Blocks: | 283 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Windows API Usage
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 |
|---|---|
| Syscall Use |
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