Threat Database Trojans Trojan.Doina.S

Trojan.Doina.S

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 19,409
Threat Level: 80 % (High)
Infected Computers: 32
First Seen: June 26, 2024
Last Seen: April 25, 2026
OS(es) Affected: Windows

The detection of Trojan.Doina.S on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operational methods, symptoms of infection, and most importantly, steps to remove it from your computer.

What Is Trojan.Doina.S?

Trojan.Doina.S is identified as a Trojan-type threat, which is a broad category of malware designed to allow unauthorized access to a user's system. Trojans can be used for a variety of malicious purposes, including data theft, espionage, and the distribution of additional malware. The name "Trojan.Doina.S" itself does not specify a known malware family but indicates it is a type of Trojan horse malware.

How Trojan.Doina.S Operates

Trojans typically operate by disguising themselves as legitimate software or attachments. Once executed, they can create a backdoor on the infected system, allowing attackers to access the system remotely. This access can be used to steal sensitive information, install additional malware, or use the infected system for malicious activities such as spamming or launching attacks on other systems. The exact operational details of Trojan.Doina.S are not specified due to the lack of specific telemetry data, but like other Trojans, it is likely designed to evade detection and persist on the system.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely depending on the specific goals of the malware. Common indicators include unexpected system crashes, slow performance, unfamiliar programs or icons, and unusual network activity. Users might also notice that their personal files have been altered or that they are experiencing unusual pop-ups or spam. However, Trojans are often designed to be stealthy, and many infections may not exhibit noticeable symptoms, making regular system scans crucial for detection.

How to Remove Trojan.Doina.S

  1. Boot into Safe Mode with Networking: This will limit the malware's ability to interfere with the removal process. Restart your computer and press the key to access your boot menu (this varies by manufacturer but is often F12, F2, or Del). Select the option to boot into Safe Mode with Networking.
  2. Perform a Full Scan with a Reputable Tool: Use a trusted anti-malware program, such as SpyHunter, to perform a full scan of your system. Ensure your antivirus software is updated to the latest version to increase the chances of detecting and removing the Trojan.
  3. Uninstall Suspicious Programs: Go through your list of installed programs and uninstall anything that looks suspicious or unfamiliar. Be cautious, as some malware may disguise itself as legitimate software.
  4. 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. This can usually be done through the browser's settings menu.
  5. Reboot and Re-scan: After completing the above steps, restart 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

The removal of Trojan.Doina.S requires careful and thorough steps to ensure that all components of the malware are eliminated from your system. It's also crucial to adopt preventive measures to avoid future infections, such as keeping your operating system and software up to date, being cautious with email attachments and downloads, and regularly scanning your system for malware. By understanding the nature of Trojan threats and taking proactive steps, you can significantly reduce the risk of infection and protect your digital assets.

Analysis Report

General information

Family Name: Trojan.Doina.S
Signature status: No Signature

Known Samples

MD5: c77e78b3c55302482e73ed02abe6ec03
SHA1: fbb5d8ed7194ff44cb7a452009c267db6238f333
SHA256: 69DC296E8938778893AAD3278E3E80B2C54214B1EFE1554B32229D174057D3AC
File Size: 2.20 MB, 2199552 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 security information
  • File has TLS information
  • 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
Show More
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Comments www.simuladospmtech.com.br
Company Name PM Tech
File Description Gerenciador de Exames PM Tech
File Version 7.1.0.0
Internal Name gerenciador.exe
Legal Copyright Copyright (C) PM Tech 2025
Legal Trademarks PM Tech
Original Filename gerenciador.exe
Product Name Gerenciador de Exames PM Tech
Product Version 7.3.0.0

File Traits

  • 2+ executable sections
  • HighEntropy
  • VirtualQueryEx
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 2,384
Potentially Malicious Blocks: 36
Whitelisted Blocks: 2,343
Unknown Blocks: 5

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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  • Doina.S

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