Trojan.MSIL.NanoCore.A
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.
| Popularity Rank: | 22,243 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 1,442 |
| First Seen: | August 16, 2021 |
| Last Seen: | May 27, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.NanoCore.A on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operational mechanisms, symptoms of infection, and most importantly, guidance on how to remove it from your system.
Table of Contents
What Is Trojan.MSIL.NanoCore.A?
Trojan.MSIL.NanoCore.A is identified as a Trojan-type threat. Trojans are malicious programs that can cause significant harm to computer systems. They are often disguised as legitimate software but are designed to allow unauthorized access to the victim's system, thereby enabling the perpetrator to steal sensitive information, install additional malware, or disrupt system operation. The name suggests it might be related to the NanoCore malware family, known for its remote access capabilities, but without specific details, it's crucial to focus on the general characteristics of Trojan horses and the steps to mitigate them.
How Trojan.MSIL.NanoCore.A Operates
Trojan.MSIL.NanoCore.A, like other Trojans, operates by deceiving users into installing it on their systems. This can happen through various means, such as downloading software from untrusted sources, opening malicious email attachments, or clicking on links that lead to compromised websites. Once installed, the Trojan can communicate with its command and control servers to receive instructions, which might include stealing personal data, logging keystrokes, or using the infected computer as a botnet to carry out further malicious activities.
Symptoms of Infection
Symptoms of a Trojan infection can vary widely but often include noticeable system slowdowns, frequent crashes, and unusual network activity. You might also observe unfamiliar programs or icons on your desktop, changes to your system settings, or unexpected pop-ups and advertisements. In some cases, the infection might not display overt symptoms, making it difficult to detect without proper scanning tools.
How to Remove Trojan.MSIL.NanoCore.A
- Boot your computer in Safe Mode with Networking. This will limit the malware's ability to interfere with the removal process while still allowing you to download necessary tools.
- Download and run a full scan with a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated to the latest version to increase the chances of detecting and removing the Trojan.
- Uninstall any suspicious 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 malicious or unnecessary.
- Reset your web browsers (Chrome, Firefox, Edge) to their default settings. This can help remove any malicious extensions or settings changes made by the Trojan.
- After completing the above steps, reboot your computer and run another full scan with your anti-malware tool to ensure that the Trojan and any associated malware have been completely removed.
Conclusion
Removing Trojan.MSIL.NanoCore.A from your system requires careful and methodical steps to ensure that all components of the malware are eliminated. It's also crucial to adopt preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong antivirus software, avoiding suspicious downloads, and being cautious with email attachments and links. By following the removal guide and practicing good cybersecurity habits, you can protect your system and personal data from the threats posed by Trojan.MSIL.NanoCore.A and other malicious software.
Analysis Report
General information
| Family Name: | Trojan.MSIL.NanoCore.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
bbcd707e1338817ddb9507ca79ff1825
SHA1:
6cd568085204c9874aa29530daa11726cb3d2a92
SHA256:
E6083365C2939AE901A8615AC0EE04B54742C7FCF737AEA3A589504305A11B7C
File Size:
207.36 KB, 207360 bytes
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MD5:
09a63fe7e33c5772310f583654ba2ecf
SHA1:
799f92c2ee5b9922a159d2ca51428a294ce56288
SHA256:
CC559587825877B40A955BAEEA22039CBC35813EE00E139FA6A3C90B7355283A
File Size:
207.36 KB, 207360 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 Traits
- .NET
- HighEntropy
- No Version Info
- ntdll
- RijndaelManaged
- 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: | 374 |
|---|---|
| Potentially Malicious Blocks: | 291 |
| Whitelisted Blocks: | 83 |
| 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.NanoCore.A
Files Modified
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:\program files (x86)\smtp subsystem\smtpss.exe | Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144 |
| c:\users\user\appdata\roaming\bfeb5820-9643-42ad-a79f-071dff4d8e64\run.dat | Generic Write,Read Attributes |
Registry Modifications
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\software\wow6432node\microsoft\windows\currentversion\run::smtp subsystem | C:\Program Files (x86)\SMTP Subsystem\smtpss.exe | RegNtPreCreateKey |
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 |
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| Encryption Used |
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| Network Winsock2 |
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