Threat Database Trojans Trojan.MSIL.Krypt.GFDB

Trojan.MSIL.Krypt.GFDB

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 26
First Seen: June 4, 2024
Last Seen: March 1, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Krypt.GFDB on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operating mechanisms, symptoms of infection, and step-by-step guidance on how to remove it from your system.

What Is Trojan.MSIL.Krypt.GFDB?

Trojan.MSIL.Krypt.GFDB is identified as a Trojan-type threat, which means it is a type of malware that disguises itself as legitimate software to gain unauthorized access to a computer system. The name suggests it may involve encryption or cryptographic techniques, but without specific details, it's crucial to approach removal with a broad understanding of malware behavior and removal best practices.

How Trojan.MSIL.Krypt.GFDB Operates

Trojan horses, in general, operate by deceiving users into installing them, thinking they are installing legitimate software. Once installed, they can perform a variety of malicious actions, including data theft, installation of additional malware, or providing unauthorized access to the attacker. The specifics of how Trojan.MSIL.Krypt.GFDB operates can vary, but the end goal is typically to compromise the security and integrity of the infected system.

Symptoms of Infection

Symptoms of a Trojan infection can be subtle and may not always be immediately apparent. Common indicators include unusual system behavior, such as unexpected pop-ups, slow system performance, or unfamiliar programs and icons. Sometimes, infections can lead to more severe issues like data loss, identity theft, or the system becoming part of a botnet. Being vigilant about system performance and monitoring for unusual activity is key to early detection.

  • Unexplained changes in system settings or performance.
  • Appearance of unfamiliar programs or icons.
  • Increased network activity without apparent cause.
  • Receiving warnings from security software about suspicious activity.

How to Remove Trojan.MSIL.Krypt.GFDB

  1. Enter Safe Mode with Networking: Restart your computer and enter Safe Mode with Networking. This will limit the malware's ability to interfere with the removal process while still allowing you to download necessary tools.
  2. Perform a Full Scan: Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. Ensure the tool is updated with the latest definitions to improve detection and removal capabilities.
  3. Uninstall Suspicious Programs: Go through your installed programs and uninstall any that you do not recognize or that were installed around the time of the suspected infection.
  4. Reset Browsers: If your browsers (Chrome, Firefox, Edge) have been affected, reset them to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
  5. Reboot and Re-scan: After completing the above steps, reboot your system and perform another full scan to ensure no remnants of the malware remain.

Conclusion

Removing Trojan.MSIL.Krypt.GFDB requires careful and thorough action to ensure all components of the malware are eliminated from your system. By following the steps outlined in this report and maintaining vigilance about your system's security, you can significantly reduce the risk of future infections. Regularly updating your security software, being cautious with email attachments and downloads, and using strong, unique passwords can also help protect against malware threats.

Analysis Report

General information

Family Name: Trojan.MSIL.Krypt.GFDB
Signature status: No Signature

Known Samples

MD5: 2fe4b9dbd31f83faa7aa1c692ba4d3a2
SHA1: 1b3c03e29302a0f07acb4af306a7ad42ea4827dd
SHA256: 3C088DF7119C494E3DF95AF42456225F4DAB1C3ABE003869F8C79AFB0993B027
File Size: 46.59 KB, 46592 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 is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • 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

  • .NET
  • dll
  • RijndaelManaged
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 82
Potentially Malicious Blocks: 19
Whitelisted Blocks: 63
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Bladabindi.R
  • MSIL.ClipBanker.RB
  • MSIL.ClipBanker.TO
  • MSIL.Injector.CL
  • MSIL.Krypt.GFDB
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  • MSIL.RevengeRat.A

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\1b3c03e29302a0f07acb4af306a7ad42ea4827dd_0000046592.,LiQMAxHB

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