Trojan.Vidar.FB
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: | 44 |
| First Seen: | October 13, 2025 |
| Last Seen: | February 6, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Vidar.FB on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of Trojan horse malware, which is a broad category of malicious software designed to deceive users about its true intent. Trojans can lead to a variety of issues, including data theft, system compromise, and the installation of additional malware. Understanding the nature of this threat and taking prompt action is crucial to protect your personal data and the integrity of your computer system.
Table of Contents
What Is Trojan.Vidar.FB?
Trojan.Vidar.FB, as indicated by its detection name, falls under the category of Trojan malware. Trojans are malicious programs that disguise themselves as legitimate software to gain unauthorized access to a computer system. They can be used for various malicious purposes, including stealing sensitive information, disrupting system operation, or providing a backdoor for other malware. The specific behaviors and goals of Trojan.Vidar.FB can vary, but its classification as a Trojan suggests it is designed to operate covertly and cause harm to the infected system.
How Trojan.Vidar.FB Operates
Trojans like Trojan.Vidar.FB typically operate by exploiting vulnerabilities in software or manipulating users into executing them. Once installed, they can communicate with their command and control servers to receive instructions, which might include exfiltrating sensitive data, installing additional malware, or engaging in other malicious activities. These threats often rely on social engineering tactics, such as phishing emails or fake software updates, to trick users into opening or downloading the malware. After infection, the malware may attempt to hide its presence by disguising itself as a legitimate process or file, making it challenging for users to detect without proper security software.
Symptoms of Infection
Symptoms of a Trojan infection can vary widely depending on the specific goals of the malware. Common indicators include unexpected changes to system settings, unfamiliar programs or icons, slow system performance, frequent crashes, or unusual network activity. Users might also notice that their personal files are being accessed or modified without their permission, or that their antivirus software is disabled. In some cases, the infection may not exhibit obvious symptoms, making regular system scans with up-to-date antivirus software crucial for detection.
How to Remove Trojan.Vidar.FB
- 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 as it boots up, press the F8 key repeatedly until you see the Advanced Boot Options menu. Use the arrow keys to select Safe Mode with Networking and press Enter.
- Perform a Full Scan with a Reputable Tool: Use a reputable antivirus program, such as SpyHunter, that is capable of detecting and removing Trojans. Ensure the software is updated with the latest definitions before running the scan. This will help identify and remove the malware and any associated files.
- Uninstall Suspicious Programs: Go through your list of installed programs and remove anything that you don’t recognize or that was installed around the time your system became infected. Be cautious, as some malware may disguise itself as legitimate software.
- Reset Your Browser: If your web browser (such as Chrome, Firefox, or Edge) has been affected, resetting it to its default settings can help remove any malicious extensions or settings changes made by the Trojan. You can usually find this option in the browser’s settings or preferences menu.
- Reboot and Re-scan: After taking these steps, restart your computer in normal mode and perform another full scan with your antivirus software to ensure that the malware has been completely removed.
Conclusion
Removing Trojan.Vidar.FB requires a methodical approach to ensure that all components of the malware are eliminated from your system. By following the steps outlined above and maintaining vigilance through regular system scans and updates, you can help protect your computer and personal data from similar threats in the future. It’s also important to practice safe computing habits, such as avoiding suspicious downloads and links, to reduce the risk of infection. Remember, the key to dealing with malware effectively is prompt action and preventive measures.
Analysis Report
General information
| Family Name: | Trojan.Vidar.FB |
|---|---|
| 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:
e616f1c3d6c1833cb3781c03a0c2e094
SHA1:
2d99de4c5315e877b8c1b65e9c4ac72bdf16fa7b
SHA256:
A059DC1F3EBB41582310F7C841A4C8F7442A5C0205C3C79E2C0EE559C8815509
File Size:
291.84 KB, 291840 bytes
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MD5:
f73fd79fbb5dabba09e133c13f6fa823
SHA1:
844108d1d962fa8cc938b1ef657e2aa15c84c515
SHA256:
A4ABD142E6668050CC20B1D4DD095667DCCCCBC8C2674822AF682725A7441C20
File Size:
636.93 KB, 636928 bytes
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MD5:
247048abd55317eea4125fd005603ec5
SHA1:
265481319d7cb5fd47fcd98161fba6340838d389
SHA256:
FA245A155A129614E23B9DC92334FB78E2FF7896DD649CF490304DEE0D2565A5
File Size:
645.12 KB, 645120 bytes
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MD5:
db2e9d33e74538bfcdb40a8f790ba977
SHA1:
82a8b40e89107ce11f3297588516328bc3e37184
SHA256:
D56EB6E52852E83C57930CFFE5CF812522ECB3FC24F137D29634783B6A47CF95
File Size:
278.53 KB, 278528 bytes
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MD5:
af1285c0f9d5fe640a6dd65e5b4ad30d
SHA1:
1fbeb8211519325e58355fe0420e1946ebcdf748
SHA256:
106FFEC87882F140FB281377D91EAB714C0322C4D44792185FC66B5680703CA7
File Size:
278.53 KB, 278528 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 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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- File is not packed
- 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: | 135 |
|---|---|
| Potentially Malicious Blocks: | 10 |
| Whitelisted Blocks: | 2 |
| Unknown Blocks: | 123 |
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.FB
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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