Trojan.MSIL.Inject.AAR
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: | 81 |
| First Seen: | December 3, 2021 |
| Last Seen: | December 13, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Inject.AAR on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operational characteristics, symptoms of infection, and steps to remove it from your system.
Table of Contents
What Is Trojan.MSIL.Inject.AAR?
Trojan.MSIL.Inject.AAR is a type of malware that falls under the broader category of Trojans, which are malicious programs designed to infiltrate a computer system by disguising themselves as legitimate software. The name suggests it may involve code injection techniques, potentially targeting systems that use Microsoft Intermediate Language (MSIL), which is part of the .NET Framework. However, without specific details, it's crucial to understand that Trojans like Trojan.MSIL.Inject.AAR are designed to cause harm, whether through data theft, unauthorized access, or disruption of system operations.
How Trojan.MSIL.Inject.AAR Operates
The operational specifics of Trojan.MSIL.Inject.AAR are not detailed in this report due to the absence of sandbox telemetry. Generally, Trojans operate by exploiting vulnerabilities in software or tricking users into installing them. Once installed, they can perform a variety of malicious actions, including but not limited to, stealing sensitive information, installing additional malware, or providing unauthorized access to the infected system. The "Inject" part of its name implies it might inject malicious code into other processes, which is a common tactic to evade detection and persist on the system.
Symptoms of Infection
Symptoms of a Trojan infection can vary widely depending on the specific goals of the malware. Common indicators include unusual system behavior, such as unexpected pop-ups, slow system performance, or programs starting and stopping without user intervention. Additionally, users might notice changes in their browser settings or the presence of unfamiliar programs. Since Trojan.MSIL.Inject.AAR does not have publicly available specifics, monitoring system behavior and being cautious with downloads and email attachments is crucial.
How to Remove Trojan.MSIL.Inject.AAR
- Enter Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This can usually be done by restarting your computer and pressing the F8 key repeatedly during boot-up, then selecting Safe Mode with Networking.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated with the latest definitions to increase the chances of detecting and removing Trojan.MSIL.Inject.AAR.
- Uninstall suspicious programs that were installed around the time the malware was detected. Be cautious and only remove programs you do not recognize or no longer need.
- Reset your browsers (Chrome, Firefox, Edge, etc.) 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 system and perform another scan with your anti-malware tool to ensure that Trojan.MSIL.Inject.AAR has been fully removed.
Conclusion
The removal of Trojan.MSIL.Inject.AAR requires a methodical approach to ensure the malware is completely eradicated from your system. By following the steps outlined above and maintaining vigilance in your online activities, you can help protect your system from future infections. Remember, prevention is key, so keeping your operating system, software, and security tools up to date, along with being cautious with emails and downloads, is essential in minimizing the risk of malware infections.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Inject.AAR |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d9c3674927fbe17f378ff0ed1411ac23
SHA1:
6347b56d070f169eb77e991e4aa4eb8bfb21a96f
SHA256:
438336AE1EE430D43CEDD42E95F61BD6A634E398A0E93AE8309C1421C3E2BD83
File Size:
6.66 KB, 6656 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 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)
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- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
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 | Wilcom EmbroideryStudio e4.2.exe |
| Original Filename | Wilcom EmbroideryStudio e4.2.exe |
| Product Version | 0.0.0.0 |
File Traits
- .NET
- 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: | 13 |
|---|---|
| Potentially Malicious Blocks: | 1 |
| Whitelisted Blocks: | 12 |
| 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.Dropper.DGC
- MSIL.Dropper.XC
- MSIL.FakeMS.TI
- MSIL.Krypt.GEGBC
- MSIL.Krypt.UI
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- MSIL.Kryptik.XC
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 Shell Execute |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
(NULL) C:\Users\Vira\AppData\Roaming\Service Host Network Service.exe
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(NULL) C:\Users\Vira\AppData\Roaming\Random\Default\Wilcom EmbroideryStudio e4.2.lnk
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