Threat Database Backdoors Backdoor.MSIL.Agent.GDSE

Backdoor.MSIL.Agent.GDSE

By CagedTech in Backdoors

Threat Scorecard

Threat Level: 60 % (Medium)
Infected Computers: 2
First Seen: May 6, 2025
Last Seen: February 25, 2026
OS(es) Affected: Windows

The detection of Backdoor.MSIL.Agent.GDSE on your system indicates a potential security threat that requires immediate attention. This backdoor threat can compromise the security and integrity of your computer, allowing unauthorized access and potentially leading to further malware infections or data breaches. It is essential to understand the nature of this threat and take prompt action to remove it.

What Is Backdoor.MSIL.Agent.GDSE?

Backdoor.MSIL.Agent.GDSE is a type of malware that operates as a backdoor, which means it can open a secret door or channel into your computer system, bypassing normal security mechanisms. This allows hackers to remotely access and control your computer, potentially leading to a range of malicious activities, including data theft, malware distribution, and unauthorized system modifications. The name suggests it is written in MSIL (Microsoft Intermediate Language), which is a platform-agnostic intermediate representation of the .NET Framework.

How Backdoor.MSIL.Agent.GDSE Operates

Backdoor.MSIL.Agent.GDSE, like other backdoors, is designed to remain stealthy and evade detection. Once installed on a system, it can communicate with its command and control (C2) server to receive instructions, which could include downloading additional malware, stealing sensitive information, or using the infected computer as part of a botnet for distributed denial-of-service (DDoS) attacks or spamming. The exact operation can vary depending on the intentions of the malware authors and the specific commands received from the C2 server.

Symptoms of Infection

Symptoms of a Backdoor.MSIL.Agent.GDSE infection can be subtle and may not always be immediately apparent. However, common signs include unusual network activity, slow system performance, unexpected changes to system settings, and the appearance of unfamiliar programs or files. In some cases, the presence of a backdoor may only be discovered during a routine security scan or after a significant security breach has occurred.

How to Remove Backdoor.MSIL.Agent.GDSE

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for a clean environment to perform removal steps.
  2. 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 increase the chances of detecting and removing the malware.
  3. Uninstall any suspicious programs that were installed around the time the malware was detected. Be cautious and only remove programs you are certain are not needed or are known to be malicious.
  4. Reset your web browsers (Google Chrome, Mozilla Firefox, Microsoft Edge) 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 the malware has been completely removed. Repeat this process until no more threats are detected.

Conclusion

Removing Backdoor.MSIL.Agent.GDSE requires careful and immediate action to prevent further damage to your system and data. By following the steps outlined above and maintaining good security practices, such as regularly updating your operating system and security software, using strong passwords, and being cautious with email attachments and links, you can significantly reduce the risk of future infections. Remember, prevention and vigilance are key components of protecting your digital assets in today's complex and evolving cybersecurity landscape.

Analysis Report

General information

Family Name: Backdoor.MSIL.Agent.GDSE
Signature status: No Signature

Known Samples

MD5: 7f33e4f31917ebae9fb27a5a9936f35b
SHA1: b343f5d7e78361f194eb8e9fd994eccff7a1ea60
SHA256: 819F641D7B6CE28392C9FD32854AF24F69BEB63E464CB61DED070E5D3AC51A24
File Size: 18.94 KB, 18944 bytes
MD5: ba468c869cbf3cdea0cd6fb5f6f2c6ff
SHA1: fe2e9c3d68806e01e94e668d01ff39515035a4fe
SHA256: E8C14F901F4218101ED1A41F026114C80083250C28CA5B7BA0A2290AF085F698
File Size: 18.94 KB, 18944 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 .NET application
  • File is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI 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)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Description Chat
File Version 1.0.0.0
Internal Name Chat.dll
Legal Copyright Copyright © 2022
Original Filename Chat.dll
Product Name Chat
Product Version 1.0.0.0

File Traits

  • .NET
  • dll
  • RijndaelManaged
  • x86

Block Information

Total Blocks: 44
Potentially Malicious Blocks: 18
Whitelisted Blocks: 26
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Agent.GDSE

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 沊䠱O噀ñ᝹ʁ뽹ɞ傄ë횎ǜ駃óߙĤÉ RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
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  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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