Trojan.MSIL.Agent.AYJ
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: | 25,248 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 10 |
| First Seen: | February 12, 2025 |
| Last Seen: | July 7, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Agent.AYJ on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating methods, symptoms of infection, and step-by-step guidance on how to remove it from your computer.
Table of Contents
What Is Trojan.MSIL.Agent.AYJ?
Trojan.MSIL.Agent.AYJ is a type of malicious software, or malware, that can compromise the security and integrity of your computer system. The name suggests it is a Trojan-type threat, which typically disguises itself as legitimate software to gain unauthorized access to a computer. Trojans can be used to spy on users, steal sensitive information, or provide a backdoor for other malicious activities.
How Trojan.MSIL.Agent.AYJ Operates
Malware like Trojan.MSIL.Agent.AYJ operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can run in the background, potentially allowing unauthorized access to your computer, stealing personal data, or using your system's resources for malicious activities. The specific operations of Trojan.MSIL.Agent.AYJ can vary, but its primary goal is to remain hidden while it carries out its malicious tasks.
Symptoms of Infection
Symptoms of a Trojan infection can be subtle and may not always be immediately apparent. Common signs include unexpected changes to your computer's settings, slow performance, frequent crashes, or the appearance of unwanted programs or toolbars. You might also notice unusual network activity, such as increased data usage or unfamiliar programs accessing the internet. If you suspect your computer is infected, it's crucial to take action promptly to minimize potential damage.
How to Remove Trojan.MSIL.Agent.AYJ
- Boot into Safe Mode with Networking: This will help prevent the malware from loading and give you a cleaner environment to work in. To do this, restart your computer and press the F8 key repeatedly as it boots up. Select Safe Mode with Networking from the Advanced Boot Options menu.
- Conduct a Full Scan with a Reputable Tool: Use an anti-malware tool like SpyHunter to perform a full scan of your system. This can help identify and remove the Trojan and any other malware that might be present.
- Uninstall Suspicious Programs: Go through your installed programs and uninstall anything that looks suspicious or unfamiliar. Be cautious, as some malware may disguise itself as legitimate software.
- Reset Your Browser: Resetting your web browser (such as Chrome, Firefox, or Edge) to its default settings can help remove any malicious extensions or settings that the Trojan may have installed. You can usually find this option in the browser's settings or preferences menu.
- Reboot and Re-scan: After taking the above steps, reboot your computer and run another scan with your anti-malware tool to ensure that the Trojan and any associated malware have been completely removed.
Conclusion
Removing Trojan.MSIL.Agent.AYJ requires careful and methodical steps to ensure that all components of the malware are eliminated from your system. By following the guidance provided, you can help protect your computer and personal data from the potential harm caused by this and other types of malware. Remember, prevention is key; keeping your operating system, software, and security tools up to date, along with practicing safe computing habits, can significantly reduce the risk of future infections.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Agent.AYJ |
|---|---|
| Signature status: | Hash Mismatch |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
5f416ebe7e78010a0ca0d5f7f0de24b7
SHA1:
4a9417d52aa9054a77509dcbde261eda49e1fabb
SHA256:
8918E3B71E21D4F0EFF005DC201290235D38069D992670039FFD97C227985C3E
File Size:
2.20 MB, 2202624 bytes
|
|
MD5:
2469c2caeaa91ef9d5ae6d8ebba9c804
SHA1:
b3e53e7832ff153417b94bbc3770135d3244ffe9
SHA256:
ACF26A022E36A917E42D02D313CC0B52F1BFD12960FF3DDCA48430D1E5FCC867
File Size:
508.93 KB, 508928 bytes
|
|
MD5:
ab39ae303fb4ae0243629f24606173a0
SHA1:
dccb25962260be2085c84fb99835d40b38409162
SHA256:
A60D45D706C0583B5D45DBAD53C4665242E950C068B57E6D94A48A53E43B565B
File Size:
521.12 KB, 521120 bytes
|
|
MD5:
6ee9edd9d8bc2ccd5353b0638873dfd3
SHA1:
abba123115cf917af56a664127460df2f0b5e400
SHA256:
1370F3806F222C0C3C839710B87706532827AEC5D857DAAFC306B56D1995540C
File Size:
581.67 KB, 581672 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 |
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| Comments | %NameExe% |
| Company Name | Microsoft Corporation |
| File Description |
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| File Version |
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| Internal Name |
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| Legal Copyright |
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| Legal Trademarks | Microsoft® is a registered trademark of Microsoft Corporation |
| Original Filename |
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| Product Name |
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| Product Version |
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Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| Oracle America, Inc. | DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1 | Hash Mismatch |
| Crystal Future OÜ | GlobalSign Code Signing Root R45 | Hash Mismatch |
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: | 2,612 |
|---|---|
| Potentially Malicious Blocks: | 2,263 |
| Whitelisted Blocks: | 5 |
| Unknown Blocks: | 344 |
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x
x
x
x
?
x
x
x
x
x
?
x
x
x
x
x
x
x
x
?
x
x
x
x
x
?
x
x
x
x
x
x
?
x
x
x
x
x
x
x
?
x
x
x
x
x
x
x
x
x
?
x
x
x
x
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?
x
x
x
x
x
x
x
?
x
x
x
x
x
?
x
x
x
x
x
x
?
x
x
x
x
x
x
x
x
x
x
x
x
x
x
?
x
x
x
x
x
x
x
?
x
x
x
x
x
x
?
x
x
x
x
x
x
?
x
x
x
x
x
x
x
?
x
x
x
x
x
?
x
x
x
x
x
x
x
x
x
?
x
x
x
x
x
x
x
?
x
x
x
x
x
x
x
?
x
x
x
x
x
x
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?
x
x
x
x
x
x
?
x
x
x
x
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?
x
x
x
x
x
?
x
x
x
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?
x
x
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x
x
x
?
x
x
x
x
x
?
x
x
x
x
x
?
x
x
x
x
...
Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block
? - 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.Agent.AYB
- MSIL.Agent.AYJ
- MSIL.Jalapeno.J
- MSIL.Jalapeno.L
- MSIL.Krypt.YAGC
Show More
- MSIL.Krypt.YAGD
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 |
Show More
|
| User Data Access |
|
| Anti Debug |
|
| Other Suspicious |
|
