Trojan.MSIL.Spy.Agent.GFB
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: | 12,793 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 6 |
| First Seen: | April 18, 2026 |
| Last Seen: | July 12, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.MSIL.Spy.Agent.GFB indicates that a potentially malicious program has been identified on your system. This detection name suggests that the malware in question may be related to spyware, which is designed to gather sensitive information from infected computers without the users' knowledge or consent. It is essential to address this issue promptly to prevent potential harm to your personal data and system security.
Table of Contents
What Is Trojan.MSIL.Spy.Agent.GFB?
Trojan.MSIL.Spy.Agent.GFB is a type of malware that may be capable of spying on infected systems, potentially stealing sensitive information such as login credentials, browsing history, and other personal data. The name "Trojan" refers to the fact that this malware may disguise itself as a legitimate program or hide within other software to gain unauthorized access to a computer system. The "MSIL" part of the name suggests that the malware is written in Microsoft Intermediate Language, which is a programming language used by the .NET Framework.
How Trojan.MSIL.Spy.Agent.GFB Operates
Malware like Trojan.MSIL.Spy.Agent.GFB typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it may attempt to connect to a command and control server to receive instructions or transmit stolen data. The exact mechanisms used by this specific malware are not publicly known, but it is likely that it uses common spyware tactics such as keylogging, screen scraping, or intercepting network traffic to gather sensitive information.
Symptoms of Infection
Systems infected with Trojan.MSIL.Spy.Agent.GFB may exhibit a range of symptoms, including slow system performance, frequent crashes, or unusual network activity. Users may also notice that their browsers are being redirected to unwanted websites, or that their search results are being altered. In some cases, the malware may attempt to disguise itself as a legitimate program, making it difficult to detect without the use of specialized security software.
- Unexplained changes to system settings or browser configurations
- Appearance of unwanted programs or toolbars
- Increased risk of identity theft or financial fraud
How to Remove Trojan.MSIL.Spy.Agent.GFB
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for internet access to download removal tools.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and identify all components of the malware.
- Uninstall any suspicious programs that were installed around the time of the infection, as these may be related to the malware.
- Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or add-ons.
- Reboot your system 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.Spy.Agent.GFB from an infected system requires careful attention to detail and the use of specialized security software. By following the steps outlined above and maintaining good security practices, such as keeping software up to date and avoiding suspicious downloads, you can help protect your system from future infections and prevent the potential harm caused by spyware and other types of malware.
Analysis Report
General information
| Family Name: | Trojan.MSIL.Spy.Agent.GFB |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
4c682d82940d3a31b8c8eb00c81f3a9e
SHA1:
535a7565c0107a08093945599b4a89fd8e46e8e0
SHA256:
BC18012194F4EB06D3217D25C524F1B99A34590F40B4E3A8F5FA84822D2DE022
File Size:
48.64 KB, 48640 bytes
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MD5:
ffaf989b3f60ee6dfea834c0fdbc5e87
SHA1:
292de020a3dad1c6fad991bb541202e0e6114135
SHA256:
FBBA9E5859C643AE662DF0A40C8D341B1BFE5086984849ECBD405DC00F1123A2
File Size:
43.01 KB, 43008 bytes
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MD5:
6ea9cc7c7c85ac0baf5da6654324c9db
SHA1:
d3c2717ef24b306097e9dedc5071de96cf995bf8
SHA256:
96604F7E8E8786421C1F5A14FA94D039627CA8F408AB1985263E442E879B599E
File Size:
45.06 KB, 45056 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 console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- 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 | 1.0.0.0 |
| Company Name | System.Spy.Lib |
| File Description | System.Spy.Lib |
| File Version | 1.0.0.0 |
| Internal Name | System.Spy.Lib.dll |
| Original Filename | System.Spy.Lib.dll |
| Product Name | System.Spy.Lib |
| Product Version | 1.0.0 |
File Traits
- .NET
- dll
- ntdll
- 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: | 91 |
|---|---|
| Potentially Malicious Blocks: | 39 |
| Whitelisted Blocks: | 49 |
| Unknown Blocks: | 3 |
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.Spy.Agent.GFB
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\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 | Ll �v����Bx (�1`1�1HO @V� A��H[uN$k`k�q�P� ��!����� ��3�� ��� �m� � �V �$�8���l� �&M �~ B1_ `�V����� �Q] �� @ K� A *�" C ��| | 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 |
|---|---|
| Syscall Use |
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