Trojan.Vidar.JA
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 26, 2025 |
| Last Seen: | December 3, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.Vidar.JA on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of malicious software, but without more specific information, it's crucial to understand the general nature of such threats and how to address them effectively.
Table of Contents
What Is Trojan.Vidar.JA?
Trojan.Vidar.JA is identified as a Trojan-type threat, which is a broad category of malware designed to allow unauthorized access to a computer system. Trojans can be used to spy on users, steal sensitive information, or disrupt system operation. The specifics of how Trojan.Vidar.JA operates can vary, but its classification as a Trojan indicates it likely involves deceptive or stealthy behavior to achieve its malicious goals.
How Trojan.Vidar.JA Operates
Trojan malware, including those like Trojan.Vidar.JA, typically operates by disguising itself as legitimate software or piggybacking on legitimate programs to gain entry into a system. Once inside, it can create backdoors for remote access, steal personal data, or install additional malware. The operation of Trojan.Vidar.JA would likely involve exploiting vulnerabilities in software or user behavior to establish and maintain its presence on the infected system.
Symptoms of Infection
Symptoms of a Trojan infection can be subtle and may not always be immediately apparent. Common signs include unexpected changes in system performance, such as slow operation, frequent crashes, or unusual network activity. Users might also notice unfamiliar programs or system tray icons, changes in browser settings, or the appearance of unwanted pop-ups and advertisements. Given the nature of Trojan.Vidar.JA, it's possible that the infection could be designed to remain stealthy, making these symptoms less obvious or intermittent.
How to Remove Trojan.Vidar.JA
- Enter Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This mode allows you to use the internet to download removal tools while minimizing system activity.
- Perform a full scan with a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated to the latest version to maximize its effectiveness against the latest threats.
- Uninstall suspicious programs that were installed around the time the malware was detected. Be cautious and only remove programs you are certain are not needed or are known to be malicious.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings. This can help remove any malicious extensions or settings changes made by the Trojan.
- Reboot your system and then perform another full scan with your anti-malware tool to ensure all components of the malware have been removed.
Conclusion
The removal of Trojan.Vidar.JA requires a systematic approach to ensure all components of the malware are eliminated from the system. By following the steps outlined above and maintaining vigilance through regular system scans and updates, users can significantly reduce the risk of reinfection. It's also crucial to practice safe computing habits, such as avoiding suspicious downloads and emails, to prevent future malware infections. Remember, staying informed and proactive is key to protecting your digital security in the face of evolving threats like Trojan.Vidar.JA.
Analysis Report
General information
| Family Name: | Trojan.Vidar.JA |
|---|---|
| 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:
af34666f8fedc776eb20790ab31ede72
SHA1:
605d111ad869072c05b595dfbbde05fca1133ca7
SHA256:
8B240AE382F768EB7CB90F3C01630DBB6A3E065C44694AFD710D600E2B17D813
File Size:
584.70 KB, 584704 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)
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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)
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: | 552 |
|---|---|
| Potentially Malicious Blocks: | 491 |
| Whitelisted Blocks: | 61 |
| 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.FD
- Vidar.JA
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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