Threat Database Trojans Trojan.Vidar.Gen.F

Trojan.Vidar.Gen.F

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 5
First Seen: January 14, 2026
Last Seen: March 10, 2026
OS(es) Affected: Windows

The detection of Trojan.Vidar.Gen.F on your system indicates a potential security threat that requires immediate attention. This Trojan-type threat is designed to compromise the security and integrity of your computer, and its presence can lead to a range of problems, from data theft to system instability. In this report, we will provide an overview of Trojan.Vidar.Gen.F, its operating methods, symptoms of infection, and most importantly, steps to remove it from your system.

What Is Trojan.Vidar.Gen.F?

Trojan.Vidar.Gen.F is a type of malware that falls under the broader category of Trojans. Trojans are malicious programs that disguise themselves as legitimate software but are designed to allow unauthorized access to a computer system. They can be used for a variety of malicious purposes, including data theft, spyware, and ransomware distribution. The ".Gen.F" part of the name suggests that it is a generic detection for a Trojan that has been identified through its behavior rather than a specific known malware family.

How Trojan.Vidar.Gen.F Operates

Trojan.Vidar.Gen.F, like other Trojans, operates by deceiving users into installing it on their systems. This can happen through various means, such as downloading and installing free software that is bundled with the malware, opening malicious email attachments, or clicking on links to malicious websites. Once installed, the Trojan can create a backdoor on the infected computer, allowing remote access to the attackers. This access can be used to steal sensitive information, install additional malware, or use the computer as part of a botnet for malicious activities.

Symptoms of Infection

The symptoms of a Trojan.Vidar.Gen.F infection can vary, but common signs include unusual system behavior, such as slow performance, frequent crashes, or the appearance of unwanted programs or toolbars. You might also notice that your browser homepage has changed without your consent, or you are being redirected to unwanted websites. In some cases, the infection might not display any noticeable symptoms, making it difficult to detect without the use of antivirus software.

How to Remove Trojan.Vidar.Gen.F

  1. Enter Safe Mode with Networking: Restart your computer and enter Safe Mode with Networking. This will prevent the malware from loading and give you a clean environment to work in.
  2. Full Scan with a Reputable Tool: Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This will help identify and remove the Trojan and any other malware that might be present.
  3. Uninstall Suspicious Programs: Go through the list of installed programs on your computer and uninstall any that you do not recognize or that were installed around the time the infection was detected.
  4. Reset Your Browser: Reset your web browsers (Google Chrome, Mozilla Firefox, Microsoft Edge, etc.) to their default settings. This will remove any malicious extensions or settings that the Trojan might have installed.
  5. Reboot and Re-scan: After completing the above steps, reboot your computer and perform another full scan with your anti-malware tool to ensure that the Trojan and any associated malware have been completely removed.

Conclusion

Removing Trojan.Vidar.Gen.F from your system requires careful and thorough steps to ensure that all components of the malware are eliminated. By following the guidance provided, you can help protect your computer and personal data from the risks associated with this Trojan. Remember, prevention is key; keeping your operating system and software up to date, using strong antivirus protection, and being cautious when downloading software or opening email attachments can significantly reduce the risk of infection. If you are unsure about any part of the removal process, consider seeking help from a professional to ensure your system is completely clean and secure.

Analysis Report

General information

Family Name: Trojan.Vidar.Gen.F
Signature status: No Signature

Known Samples

MD5: c0e85d1c2e4ff458f5a1e7688eb7c576
SHA1: 6f592fa716306627ae8e6048929f2d36e2067043
SHA256: 3422810316E4454D719A65F46AF820FFEBA0B00617FD5809CC914B484AFB504A
File Size: 616.45 KB, 616448 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • 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)
  • 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

  • HighEntropy
  • No Version Info
  • VirtualQueryEx
  • x64

Block Information

Total Blocks: 373
Potentially Malicious Blocks: 358
Whitelisted Blocks: 15
Unknown Blocks: 0

Visual Map

x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 x 0 x x x x x x x 0 x x x x x x x 0 x x x x 0 x x 0 x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 0 0 x x x x x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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