Threat Database Trojans Trojan.Guildma.B

Trojan.Guildma.B

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 12
First Seen: October 18, 2021
Last Seen: February 18, 2026
OS(es) Affected: Windows

The detection of Trojan.Guildma.B on your system indicates a potential security threat that requires immediate attention. Trojans are a type of malware that can cause significant harm to your computer and compromise your personal data. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.Guildma.B?

Trojan.Guildma.B is a type of Trojan horse malware, which is a broad category of threats that disguise themselves as legitimate software. The name "Trojan.Guildma.B" suggests that it is a specific variant of malware, but its exact characteristics and behavior may not be immediately clear. Trojans can be used for a variety of malicious purposes, including stealing sensitive information, installing additional malware, or providing unauthorized access to your system.

How Trojan.Guildma.B Operates

Trojans like Trojan.Guildma.B typically operate by exploiting vulnerabilities in software or tricking users into installing them. They can be spread through various means, such as infected email attachments, malicious downloads, or compromised websites. Once installed, the Trojan can communicate with its creators, allowing them to control your system remotely. This can lead to a range of malicious activities, including data theft, keylogging, and the installation of additional malware.

Symptoms of Infection

The symptoms of a Trojan.Guildma.B infection can vary, but common signs include slow system performance, unexpected pop-ups or ads, and unfamiliar programs or icons on your desktop. You may also notice that your browser is being redirected to suspicious websites or that your antivirus software is disabled. In some cases, the infection may not exhibit any noticeable symptoms, making it difficult to detect without proper scanning tools.

How to Remove Trojan.Guildma.B

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for a more effective removal process.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any malicious files or programs associated with Trojan.Guildma.B.
  3. Uninstall any suspicious programs or applications that were installed around the time of the infection. Be cautious when uninstalling programs, as some may be legitimate or required by your system.
  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 system and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.

Conclusion

Removing Trojan.Guildma.B from your system requires careful attention to detail and a thorough approach. By following the steps outlined above and using reputable anti-malware tools, you can effectively remove the infection and prevent future occurrences. It is also essential to maintain good security practices, such as regularly updating your software, using strong passwords, and being cautious when opening email attachments or downloading files from the internet. By taking these precautions, you can help protect your system and personal data from the threats posed by Trojan.Guildma.B and other types of malware.

Analysis Report

General information

Family Name: Trojan.Guildma.B
Signature status: No Signature

Known Samples

MD5: 6c9ab8c8f612373e327bad8d2b66267a
SHA1: 463d5044678af85c39c74271478dfb010fbdf5f6
SHA256: 9EAD8DDBE3CDE6C4FD9ECA256E83B5D9D9327646FB6F6725E5A46754C8E76B31
File Size: 1.70 MB, 1699840 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have security information
  • File has 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)
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  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • 2+ executable sections
  • dll
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 528
Potentially Malicious Blocks: 26
Whitelisted Blocks: 502
Unknown Blocks: 0

Visual Map

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

Similar Families

  • Danabot.DB
  • Guildma.B

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtQueryAttributesFile
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  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\463d5044678af85c39c74271478dfb010fbdf5f6_0001699840.,LiQMAxHB

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