Threat Database Backdoors Backdoor.MSIL.Spy.Agent.VI

Backdoor.MSIL.Spy.Agent.VI

By CagedTech in Backdoors

Threat Scorecard

Threat Level: 60 % (Medium)
Infected Computers: 57
First Seen: December 8, 2023
Last Seen: February 6, 2026
OS(es) Affected: Windows

The detection of Backdoor.MSIL.Spy.Agent.VI on your system indicates a potential security threat that requires immediate attention. This backdoor threat can compromise your system's security and privacy, allowing unauthorized access to your data and potentially leading to further malicious activities. In this removal report, we will provide you with information on what Backdoor.MSIL.Spy.Agent.VI is, how it operates, its symptoms, and most importantly, how to remove it from your system.

What Is Backdoor.MSIL.Spy.Agent.VI?

Backdoor.MSIL.Spy.Agent.VI is a type of backdoor threat that allows unauthorized access to your system, potentially leading to data theft, malware installation, and other malicious activities. Backdoor threats are designed to remain hidden on a system, making them difficult to detect and remove. The name Backdoor.MSIL.Spy.Agent.VI suggests that it is a backdoor threat with spyware capabilities, which can collect and transmit sensitive information from your system to its creators or other malicious actors.

How Backdoor.MSIL.Spy.Agent.VI Operates

Backdoor threats like Backdoor.MSIL.Spy.Agent.VI typically operate by exploiting vulnerabilities in software or using social engineering tactics to gain access to a system. Once installed, they can create a covert communication channel with their command and control servers, allowing them to receive instructions and transmit stolen data. These threats can also install additional malware, modify system settings, and disrupt system performance.

Symptoms of Infection

The symptoms of a Backdoor.MSIL.Spy.Agent.VI infection can vary, but common indicators include unusual system behavior, slow performance, and unexpected changes to system settings. You may also notice unfamiliar programs or processes running on your system, or receive unexpected pop-ups and alerts. In some cases, you may not notice any symptoms at all, which is why regular system scans and monitoring are essential for detecting and removing threats like Backdoor.MSIL.Spy.Agent.VI.

How to Remove Backdoor.MSIL.Spy.Agent.VI

  1. Boot your system in Safe Mode with Networking to prevent the threat 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 system scan and detect any malicious files and registry entries associated with Backdoor.MSIL.Spy.Agent.VI.
  3. Uninstall any suspicious programs or applications that may be related to the threat.
  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 the threat has been completely removed.

Conclusion

Removing Backdoor.MSIL.Spy.Agent.VI from your system requires careful attention to detail and a thorough understanding of the threat's behavior and characteristics. By following the steps outlined in this removal report, you can help ensure the complete removal of the threat and prevent future infections. Remember to always keep your system and software up to date, use strong antivirus protection, and practice safe browsing habits to minimize the risk of malware infections.

Analysis Report

General information

Family Name: Backdoor.MSIL.Spy.Agent.VI
Signature status: No Signature

Known Samples

MD5: c17a23d5d57c0fde39f1730004bb7739
SHA1: 1e92054d127c754da2fd6662b72b6d74045fa95e
SHA256: D11A000FB57797FAF80689A19D00C2D3CBC7766BD3B7ADB543781F997FAD6D1E
File Size: 125.95 KB, 125952 bytes
MD5: 99ed80bbe1d1b6352507ec91d36f3f52
SHA1: 464707ad461d9194ee53fb5b30cff72a76ebeb6b
SHA256: 8DCD91B15BC42BCC12149603AC40A2E66ECEFECFC8A1F390C9FBAAF9D3E64B14
File Size: 125.95 KB, 125952 bytes
MD5: 263ac88179c22fc2d6b2d0710b153795
SHA1: 78d785587846328abf552370daba4e98cfa7c20e
SHA256: 232C52E685A673F4DBD19A066D83CE42D17BF131ED5AFDCBE3CD793CE7193944
File Size: 126.98 KB, 126976 bytes
MD5: ebbd7afc2b10340a3dda96d7db514d67
SHA1: bd23a5210a950c73633d33f86dd9d85a0b5cb821
SHA256: 03E1AB5A87FFD0D02647BF59B4B44506F62528E9E590078859243ADC59134DD7
File Size: 126.98 KB, 126976 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 resources
  • 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
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  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • .NET
  • No Version Info
  • x86

Block Information

Total Blocks: 99
Potentially Malicious Blocks: 44
Whitelisted Blocks: 55
Unknown Blocks: 0

Visual Map

0 0 0 0 x x x x x x x x x 0 x x x 0 0 0 0 0 0 0 0 0 0 0 0 x x 0 0 0 0 0 0 0 0 0 x x x x x x x x x x x 0 0 0 0 0 0 0 0 0 x x x x x x x x x x x 0 0 0 0 0 0 0 0 x x x x x x x x 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.Spy.Agent.VI

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateThreadEx
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  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • 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!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation

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