Trojan.Vidar.FC
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: | 2 |
| First Seen: | November 3, 2025 |
| Last Seen: | December 1, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.Vidar.FC on your system indicates a potential security threat that requires immediate attention. Trojans are a type of malware designed to allow unauthorized access to a computer system, and Trojan.Vidar.FC is no exception. In this removal report, we will provide you with an overview of what Trojan.Vidar.FC is, how it operates, the symptoms of infection, and most importantly, the steps to remove it from your system.
Table of Contents
What Is Trojan.Vidar.FC?
Trojan.Vidar.FC is a type of Trojan horse malware that can compromise the security of your computer system. The name itself does not directly indicate a specific malware family, but rather serves as a detection label for the identified threat. Trojans, in general, are malicious programs that disguise themselves as legitimate software, allowing them to bypass security mechanisms and gain unauthorized access to a system. Once inside, they can cause a variety of problems, including data theft, system crashes, and the installation of additional malware.
How Trojan.Vidar.FC Operates
Like other Trojans, Trojan.Vidar.FC operates by deceiving users into installing it on their systems. This can happen through various means, such as downloading and executing malicious files from the internet, opening infected email attachments, or visiting compromised websites. Once installed, the Trojan can connect to its command and control servers to receive instructions, which might include stealing sensitive information, logging keystrokes, or using the infected computer as a botnet to spread spam or conduct denial-of-service attacks.
Symptoms of Infection
The symptoms of a Trojan.Vidar.FC infection can vary, but common signs include unusual system behavior, such as slow performance, frequent crashes, or the appearance of unwanted programs and toolbars. You might also notice that your browser settings have been altered without your consent, or that you are being redirected to suspicious websites. Additionally, if the Trojan is designed to steal data, you might notice unauthorized transactions or changes in your online accounts.
- Unexplained changes in system settings or browser configurations
- Appearance of unfamiliar programs or toolbars
- Slow system performance or frequent system crashes
- Unauthorized access to personal data or online accounts
How to Remove Trojan.Vidar.FC
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to give you a clean environment to work in.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help identify and remove the Trojan.Vidar.FC along with any other malware that might be present.
- Uninstall any suspicious programs that you do not recognize or that were installed around the time the infection was detected.
- Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the Trojan.
- Reboot your computer and perform another scan with your anti-malware tool to ensure that all traces of the malware have been removed.
Conclusion
Removing Trojan.Vidar.FC from your system requires careful and thorough steps to ensure that all components of the malware are eliminated. It's also crucial to adopt preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious when downloading files or clicking on links from the internet. By following the removal steps outlined above and maintaining good cybersecurity practices, you can protect your system from Trojan.Vidar.FC and other types of malware, ensuring your personal data and computer remain safe.
Analysis Report
General information
| Family Name: | Trojan.Vidar.FC |
|---|---|
| Packers: | UPX x64 |
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d1373cc4667ec5e259d8103e745fa3b9
SHA1:
6861c2c95dbb50caf7adc02726523bcfd5c90ea2
SHA256:
8FB3E6C8BE88C6CA578D77B71CA4D63A1F84881FA4A74A76A412617F20EBAD49
File Size:
290.82 KB, 290816 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 has been packed
- File is 64-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
Show More
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Traits
- CryptUnprotectData
- HighEntropy
- No CryptProtectData
- No Version Info
- packed
- VirtualQueryEx
- WriteProcessMemory
- 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: | 138 |
|---|---|
| Potentially Malicious Blocks: | 135 |
| Whitelisted Blocks: | 3 |
| 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.- Vidar.FC
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 |
|