Threat Database Trojans Trojan.Vidar.Gen.H

Trojan.Vidar.Gen.H

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 4
First Seen: January 24, 2026
Last Seen: February 6, 2026
OS(es) Affected: Windows

The detection of Trojan.Vidar.Gen.H on your system indicates a potential security threat that requires immediate attention. This type of threat is known to compromise the security and integrity of infected computers, making it essential to understand its nature and take steps to remove it.

What Is Trojan.Vidar.Gen.H?

Trojan.Vidar.Gen.H is a type of Trojan horse, a malicious program that disguises itself as legitimate software to gain unauthorized access to a computer system. The name itself does not specify a particular malware family but indicates a generic detection for Trojan-type threats. Trojan horses are known for their ability to evade detection by traditional antivirus software, making them particularly dangerous.

How Trojan.Vidar.Gen.H Operates

Once installed on a system, Trojan.Vidar.Gen.H can operate in various ways, depending on its intended purpose. It may create backdoors for remote access, allowing hackers to control the infected computer, steal sensitive information, or use the computer as part of a botnet for malicious activities. Trojans can also download and install additional malware, leading to further system compromise.

Trojan horses often exploit vulnerabilities in operating systems or applications to infect computers. They can be distributed through various means, including email attachments, infected software downloads, or by exploiting vulnerabilities in web browsers or other software.

Symptoms of Infection

Identifying a Trojan infection can be challenging due to its stealthy nature. However, several symptoms may indicate the presence of Trojan.Vidar.Gen.H or similar malware. These include unexpected changes to system settings, unusual network activity, slow system performance, and the appearance of unwanted programs or toolbars. Additionally, users may experience frequent crashes, freezes, or receive unexpected pop-ups and advertisements.

  • Unexplained changes in system settings or performance
  • Appearance of unwanted software or toolbars
  • Frequent system crashes or freezes
  • Unusual or unexpected network activity

How to Remove Trojan.Vidar.Gen.H

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to gain better control over the system.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all instances of the malware.
  3. Uninstall any suspicious programs or software that you do not recognize or that were installed around the time the infection was detected.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your computer and perform another full scan with your anti-malware tool to ensure that all malware components have been removed.

Conclusion

Removing Trojan.Vidar.Gen.H requires careful and systematic steps to ensure that all components of the malware are eliminated from the infected system. It is crucial to act promptly to prevent further damage and protect sensitive information. By following the removal steps outlined above and maintaining good security practices, such as regularly updating software, using strong antivirus protection, and being cautious with email attachments and downloads, you can significantly reduce the risk of future infections.

Post-removal, it is also a good idea to monitor your system's performance and watch for any signs of reinfection, ensuring that your computer remains secure and functions optimally.

Analysis Report

General information

Family Name: Trojan.Vidar.Gen.H
Packers: UPX x64
Signature status: No Signature

Known Samples

MD5: 71b1f1f12ef0b7593c1405b602c57f60
SHA1: b864bb97a1269c71c4a372c562ffb5931f3cb57e
SHA256: C1526793CABE3A7B1C67A15C8A9F647A13B17858FD226765730148BF4731CE04
File Size: 172.03 KB, 172032 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

  • HighEntropy
  • No Version Info
  • packed
  • VirtualQueryEx
  • x64

Block Information

Total Blocks: 336
Potentially Malicious Blocks: 326
Whitelisted Blocks: 10
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 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 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 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 0 x x 0 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 0 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 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 - 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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