Trojan.MSIL.Coinminer.B
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: | 1,198 |
| First Seen: | December 30, 2012 |
| Last Seen: | December 7, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Coinminer.B on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise your computer's resources for malicious activities, and it's essential to understand its nature and take steps to remove it.
Table of Contents
What Is Trojan.MSIL.Coinminer.B?
Trojan.MSIL.Coinminer.B is a type of Trojan horse malware that is primarily designed to utilize your computer's resources for cryptocurrency mining without your knowledge or consent. The "MSIL" part of the name suggests that it is written in Microsoft Intermediate Language, which is a platform-agnostic bytecode that can run on any system that supports the .NET Framework. The "Coinminer" part indicates its purpose of mining cryptocurrency, which can lead to significant system slowdowns, increased power consumption, and reduced overall system performance.
How Trojan.MSIL.Coinminer.B Operates
Once installed on your system, Trojan.MSIL.Coinminer.B operates by secretly using your computer's CPU or GPU to solve complex mathematical problems, which are required to validate transactions on a blockchain and create new cryptocurrency units. This process can consume significant system resources, leading to performance issues, overheating, and increased electricity bills. The malware may also communicate with its command and control servers to receive updates, send stolen data, or get further instructions from its operators.
Symptoms of Infection
Identifying a Trojan.MSIL.Coinminer.B infection can be challenging, as it often runs in the background without visible symptoms. However, some common signs of infection include significant slowdowns in system performance, increased CPU or GPU usage, overheating, and unexpected crashes. You may also notice unusual network activity or unfamiliar processes running in the background. If you suspect that your system is infected, it's crucial to take immediate action to remove the malware and prevent further damage.
How to Remove Trojan.MSIL.Coinminer.B
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
- Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove all instances of the malware.
- Uninstall any suspicious programs or applications that you don't recognize or that were installed around the time of the infection.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your computer and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.
Conclusion
Removing Trojan.MSIL.Coinminer.B from your system requires careful attention to detail and a thorough approach to ensure that all instances of the malware are eliminated. By following the steps outlined above and maintaining good security practices, such as keeping your operating system and software up to date, using strong passwords, and avoiding suspicious downloads, you can help protect your system from future malware infections and keep your personal data safe. Remember to always be cautious when clicking on links or downloading attachments from unknown sources, and consider investing in a reputable anti-malware tool to provide ongoing protection for your system.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Coinminer.B |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
8b6df5426f589bd18a1774dfaee47aa9
SHA1:
81312b2ab05b61edd33cd6952e01eea8a8897f8a
SHA256:
9B026FAA676C24B056B6F5D9B9AF2ABAE55BE62ED1853C846AC9EF7594FBF308
File Size:
2.11 MB, 2108928 bytes
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MD5:
fbd760c00f1d2d90cb995a396f148064
SHA1:
11307ea10b4567e4675967e9feb3a4c813f38447
SHA256:
F6620D4F3FAF4E389A9067DE41106AFE2A7A7C6C10148C7CD0E43E20D612A00A
File Size:
2.16 MB, 2163712 bytes
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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 relocations information
- File doesn't have security information
- File is .NET application
- File is 64-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is not packed
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- IMAGE_FILE_DLL is not set inside PE header (Executable)
- 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 | 0.0.0.0 |
| File Version | 0.0.0.0 |
| Internal Name |
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| Original Filename |
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| Product Version | 0.0.0.0 |
File Traits
- .NET
- HighEntropy
- RijndaelManaged
- x64
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: | 11 |
|---|---|
| Potentially Malicious Blocks: | 8 |
| Whitelisted Blocks: | 2 |
| Unknown Blocks: | 1 |
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.Coinminer.B
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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| User Data Access |
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| Anti Debug |
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| Process Manipulation Evasion |
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