Trojan.MSIL.Agent.XGJ
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) |
| First Seen: | October 21, 2026 |
| Last Seen: | October 24, 2026 |
Trojan.MSIL.Agent.XGJ is a dangerous Trojan horse infection that has been flagged with a high danger level due to its ability to grant attackers deep access to an infected computer. Built using the .NET framework and compiled as a 64-bit executable, this threat is designed to operate quietly in the background while carrying out malicious instructions, often without the computer user ever noticing anything unusual until serious damage has already been done.
Table of Contents
What Trojan.MSIL.Agent.XGJ Does
Once active on a system, Trojan.MSIL.Agent.XGJ runs silently and can carry out a wide range of harmful functions. It is capable of giving remote attackers significant control over the infected machine, which may allow them to execute additional malicious code, covertly delete or modify files, and install other unwanted or harmful programs without the user's knowledge or consent. Because it operates stealthily, the Trojan can continue its activity for extended periods while avoiding detection. Analysis of the file shows that it does not display a traditional "Rich" header, debug information, or digital signature, characteristics that are often associated with threats attempting to blend in or evade straightforward identification.
How It Typically Spreads
Like most Trojans in this family, MSIL.Agent.XGJ typically relies on deception rather than sophisticated self-propagation to reach new victims. It commonly spreads by exploiting unpatched system vulnerabilities and security flaws, or through software downloads obtained from malicious or compromised websites. Email attachments from unknown or untrusted senders are another common delivery method, with disguised files that may appear as executables, images, or other seemingly harmless formats designed to trick users into opening them. Because the Trojan does not display obvious warning signs during installation, victims often have no idea an infection has occurred until the malware is already active.
Risks for the User
The presence of Trojan.MSIL.Agent.XGJ on a system poses serious risks. Attackers who gain control through this Trojan may be able to steal sensitive data, monitor user activity, or use the infected computer as a launching point for further attacks. The malware's ability to silently delete files and install additional malicious software compounds the danger, potentially leading to data loss, system instability, or further compromise through secondary infections. Given its high danger rating, this threat should be treated as a serious security incident rather than a minor nuisance.
Signs of Infection
Because this Trojan is designed to run quietly, obvious symptoms may be limited, but users should watch for unexplained slowdowns, unusual background processes, unexpected network activity, new or altered files appearing without explanation, and security tools behaving erratically or being disabled unexpectedly. Any unexplained changes to system behavior following the opening of an email attachment or a download from an unfamiliar website should be treated with suspicion.
How to Stay Protected
Users can reduce their risk of infection by keeping their operating system and all installed software fully updated to close known security vulnerabilities, avoiding downloads from untrusted or unofficial websites, and never opening email attachments from unknown or unexpected senders. Maintaining regular backups of important data, exercising caution with unfamiliar files regardless of their apparent format, and using reputable security software to scan downloads and monitor system activity are all important steps in defending against threats like Trojan.MSIL.Agent.XGJ.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Agent.XGJ |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
851da92f6c1003a34fc4b00347acf33e
SHA1:
2e0dcd12cf75164ce318660dd6cfaaf95def2404
SHA256:
E2D1DCAFD2DA015FB83C0AAA23BF6BAC437803F94704A45995AF950DE32BAACA
File Size:
390.14 KB, 390144 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 relocations information
- File doesn't have security information
- File is .NET application
- File is 64-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- 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)
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 | CastleLib.dll |
| Original Filename | CastleLib.dll |
| Product Version | 0.0.0.0 |
File Traits
- .NET
- dll
- HighEntropy
- 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: | 7 |
|---|---|
| Potentially Malicious Blocks: | 6 |
| Whitelisted Blocks: | 1 |
| 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.Agent.XGJ
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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