Trojan.MSIL.Downloader.Small.L
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: | 28 |
| First Seen: | July 11, 2021 |
| Last Seen: | December 5, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Downloader.Small.L indicates that a potentially malicious program has been identified on your system. This detection name suggests a type of Trojan downloader, which is a kind of malware designed to download and install additional malicious software onto an infected computer. Understanding what this threat is and how it operates is crucial in taking the appropriate steps to remove it and secure your system.
Table of Contents
What Is Trojan.MSIL.Downloader.Small.L?
Trojan.MSIL.Downloader.Small.L is detected as a Trojan-type threat, which means it is a malicious program that can cause harm to your computer system. Trojans are known for their ability to disguise themselves as legitimate software, making them difficult to detect. The ".MSIL" part of the name suggests that it is written in Microsoft Intermediate Language, which is a platform-agnostic intermediate representation of the .NET Common Intermediate Language (CIL). This implies that the malware could potentially run on any system that supports .NET, making it versatile and potentially more dangerous.
How Trojan.MSIL.Downloader.Small.L Operates
Like other Trojan downloaders, Trojan.MSIL.Downloader.Small.L is likely designed to connect to the internet and download additional malware components. These components can vary widely in their purpose, from keyloggers and ransomware to spyware and more. The primary goal of such malware is often to compromise the security of the infected system, steal sensitive information, or use the system's resources for malicious activities without the user's knowledge or consent. The exact operation can depend on the specific commands it receives from its command and control servers or the nature of the additional malware it downloads.
Symptoms of Infection
Symptoms of an infection can be subtle and may not always be immediately apparent. Common signs include unusual system behavior, such as unexpected pop-ups, slow system performance, or programs starting automatically without user input. Sometimes, the malware may trigger security alerts from your antivirus software, or you might notice that your internet connection seems slower than usual. In some cases, there may be no noticeable symptoms at all, which is why regular system checks and scans are essential for maintaining system security.
How to Remove Trojan.MSIL.Downloader.Small.L
- Boot your computer in Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This mode allows you to use the internet to download removal tools if necessary.
- Perform a full scan of your system using a reputable antivirus tool, such as SpyHunter, to detect and remove all traces of the malware. It's crucial to use a tool that is known for its effectiveness against Trojans and other malware.
- Uninstall any suspicious programs that you do not recognize or that were installed around the time you suspect the infection occurred. Be cautious and only remove programs you are sure are not needed for your system's operation.
- Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings that the malware might have altered. This step can help ensure that your browsing experience is secure and free from redirects or unwanted ads.
- After completing the above steps, reboot your computer and perform another full scan to ensure that all components of the malware have been removed. Repeat this process until no more threats are detected to guarantee a clean system.
Conclusion
Removing Trojan.MSIL.Downloader.Small.L requires careful attention to detail and a systematic approach to ensure that all components of the malware are eliminated from your system. By understanding the nature of this threat and following the steps outlined for removal, you can protect your system from further harm and prevent potential data breaches or other malicious activities. Regularly updating your antivirus software, being cautious with email attachments and downloads, and maintaining good browsing habits are essential for preventing future infections and keeping your digital environment secure.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Downloader.Small.L |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
a50eeff8692e5f409d274220d214a115
SHA1:
7f74eef369cb5a6ddba11f91bcfc962ff33d2a89
SHA256:
732367ED7609B4F2F5A7FEA85ED3DB6265460275B9961F8A4E4D08302FC1B29E
File Size:
659.46 KB, 659456 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 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)
Show More
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
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
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 | 1.0.1.1 |
| Comments | NBYS ASM.NET |
| Company Name | Uludağ Bilişim |
| File Description | NBYS ASM.NET |
| File Version | 1.0.1.1 |
| Internal Name | NBYS ASM.NET.exe |
| Legal Copyright | Copyright © 2013 |
| Original Filename | NBYS ASM.NET.exe |
| Product Name | NBYS ASM.NET |
| Product Version | 1.0.1.1 |
File Traits
- .NET
- HighEntropy
- 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: | 110 |
|---|---|
| Potentially Malicious Blocks: | 21 |
| Whitelisted Blocks: | 89 |
| Unknown Blocks: | 0 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
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.Downloader.Small.L
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 |
|---|---|
| User Data Access |
|
| Anti Debug |
|
