Threat Database Trojans Trojan.Triosir

Trojan.Triosir

By CagedTech in Trojans
Published:
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Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 707
First Seen: July 9, 2016
Last Seen: November 25, 2025
OS(es) Affected: Windows

The detection of Trojan.Triosir on your system indicates a potential security threat that requires immediate attention. This Trojan-type threat can compromise the integrity of your computer, leading to unauthorized access, data theft, and other malicious activities. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.Triosir?

Trojan.Triosir is a type of malware that disguises itself as a legitimate program or file, allowing it to bypass security measures and infiltrate your system. Once inside, it can perform various malicious functions, such as stealing sensitive information, installing additional malware, or providing unauthorized access to your computer. The name "Trojan.Triosir" suggests that it is a Trojan-type threat, but its exact characteristics and behavior may vary.

How Trojan.Triosir Operates

Malware like Trojan.Triosir typically operates by exploiting vulnerabilities in software or human error. It may spread through infected downloads, email attachments, or compromised websites. Once installed, it can communicate with its command and control servers to receive instructions, transmit stolen data, or download additional malware. The threat can also modify system settings, create new files or registry entries, and interact with other malicious programs to achieve its goals.

Symptoms of Infection

Identifying a Trojan.Triosir infection can be challenging, as it may not always exhibit obvious symptoms. However, some common signs of infection include slow system performance, unexpected pop-ups or ads, unfamiliar programs or icons, and unusual network activity. You may also notice that your browser homepage or search engine has changed, or that your computer is crashing or freezing frequently. If you suspect that your system is infected, it is crucial to take immediate action to prevent further damage.

How to Remove Trojan.Triosir

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
  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 threat.
  3. Uninstall any suspicious programs or applications that may be related to the infection.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your computer and run another full scan to ensure that the threat has been completely removed.

Conclusion

Removing Trojan.Triosir from your system requires a combination of technical expertise and caution. By following the steps outlined above and taking proactive measures to protect your computer, you can minimize the risk of reinfection and prevent future security threats. It is essential to remain vigilant and keep your operating system, software, and security tools up to date to stay ahead of emerging threats. Remember that prevention is key, and being aware of the potential risks and taking steps to mitigate them can help you maintain a secure and healthy computing environment.

SpyHunter Detects & Remove Trojan.Triosir

File System Details

Trojan.Triosir may create the following file(s):
# File Name MD5 Detections
1. mrz2.exe ae9c628238ccbb34a4be2f32880a1217 81
2. mrz2_07.06.2016.exe 6f01fa359a0b6c5e424e8e46ccba53f3 27
More files

Directories

Trojan.Triosir may create the following directory or directories:

%LOCALAPPDATA%\MicroCleaner

Analysis Report

General information

Family Name: Trojan.Triosir
Signature status: Root Not Trusted

Known Samples

MD5: 7fec4596271a0bb8138d44e3a6c660f3
SHA1: dcc75956bc54024acd751a8ac123dde6a82a206e
SHA256: EF116E103173B17D00BD04C854E8C71B97B77EABC198D33907426232B3A69E6C
File Size: 255.94 KB, 255944 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File is 32-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)

Windows PE Version Information

Name Value
File Description Installer
File Version 2.0.0.1
Internal Name Installer.exe
Legal Copyright Copyright (C) 2014
Original Filename Installer.exe
Product Name Installer
Product Version 2.0.0.1

Digital Signatures

Signer Root Status
TRIORIS LLC UTN-USERFirst-Object Root Not Trusted