Threat Database Backdoors Backdoor.MSIL.Spy.HH

Backdoor.MSIL.Spy.HH

By CagedTech in Backdoors

Threat Scorecard

Threat Level: 60 % (Medium)
Infected Computers: 1
First Seen: April 22, 2022
Last Seen: October 22, 2025
OS(es) Affected: Windows

The detection of Backdoor.MSIL.Spy.HH on your system indicates a serious security threat that requires immediate attention. This backdoor threat can potentially allow unauthorized access to your computer, compromising your personal data and security. In this report, we will provide an overview of what Backdoor.MSIL.Spy.HH is, how it operates, its symptoms, and most importantly, the steps you can take to remove it from your system.

What Is Backdoor.MSIL.Spy.HH?

Backdoor.MSIL.Spy.HH is identified as a backdoor threat, which means it is designed to allow unauthorized access to your computer system. Backdoors are malicious programs that can bypass normal security mechanisms, providing a covert channel for hackers to remotely access and control infected computers. The name Backdoor.MSIL.Spy.HH suggests it is related to spyware activities, indicating its potential to spy on and steal sensitive information from the infected system.

How Backdoor.MSIL.Spy.HH Operates

Backdoor threats like Backdoor.MSIL.Spy.HH typically operate by creating a secret communication channel between the infected computer and a command and control server controlled by the attacker. This channel can be used to send commands to the infected computer, steal data, install additional malware, or engage in other malicious activities. The operation of Backdoor.MSIL.Spy.HH may involve exploiting vulnerabilities in software or using social engineering tactics to trick users into installing the malware.

Symptoms of Infection

The symptoms of a Backdoor.MSIL.Spy.HH infection can be subtle and may not be immediately noticeable. However, common indicators of a backdoor infection include unusual network activity, slow system performance, unexpected changes to system settings, and the presence of unfamiliar programs or files. If you suspect that your system has been infected with Backdoor.MSIL.Spy.HH, it is crucial to take immediate action to mitigate the threat.

How to Remove Backdoor.MSIL.Spy.HH

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove Backdoor.MSIL.Spy.HH and any related malware.
  3. Uninstall any suspicious programs or applications that you do not recognize or that were installed around the time of the suspected infection.
  4. Reset your web browsers (Google Chrome, Mozilla Firefox, Microsoft Edge, etc.) 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 all components of the malware have been removed.

Conclusion

The removal of Backdoor.MSIL.Spy.HH from your system is crucial to prevent further unauthorized access and potential data theft. By following the steps outlined above and maintaining good security practices, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious with emails and downloads, you can significantly reduce the risk of future infections. Remember, vigilance and proactive security measures are key to protecting your digital assets in today's evolving cyber threat landscape.

Analysis Report

General information

Family Name: Backdoor.MSIL.Spy.HH
Signature status: No Signature

Known Samples

MD5: f28abac69d74ca07d51ecb85fd2cd08a
SHA1: 210578ac470551abdc275c86dcef17460cc47026
SHA256: E2F52A76A636524E976452F936D12D0C0C3802EEDBC400CE3D972A12B07E5ABA
File Size: 73.73 KB, 73728 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 either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
Show More
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 1.7.0.1
Comments Audio Helper
Company Name Synth Incorporated
File Description Synth Loader
File Version 1.7.0.1
Internal Name dis.exe
Legal Copyright Copyright Synth Incorporated 2010
Legal Trademarks Trademark Synth Incorporated
Original Filename dis.exe
Product Name Synth Loader
Product Version 1.7.0.1

File Traits

  • .NET
  • CryptUnprotectData
  • NewLateBinding
  • No CryptProtectData
  • x86

Block Information

Total Blocks: 78
Potentially Malicious Blocks: 61
Whitelisted Blocks: 12
Unknown Blocks: 5

Visual Map

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

Files Modified

File Attributes
c:\windows\appcompat\programs\amcache.hve Read Data,Read Control,Write Data
c:\windows\appcompat\programs\amcache.hve Write Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAdjustPrivilegesToken
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPortEx
  • ntdll.dll!NtAlpcCreateSecurityContext
  • ntdll.dll!NtAlpcDeleteSecurityContext
  • ntdll.dll!NtAlpcQueryInformation
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
Show More
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtCreateKey
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateTimer2
  • ntdll.dll!NtCreateWaitCompletionPacket
  • ntdll.dll!NtCreateWorkerFactory
  • ntdll.dll!NtDelayExecution
  • ntdll.dll!NtDeleteValueKey
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtFsControlFile
  • ntdll.dll!NtLoadKeyEx
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtNotifyChangeKey
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenSymbolicLinkObject
  • ntdll.dll!NtOpenThread
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • 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!NtQuerySymbolicLinkObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadVirtualMemory
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetTimer2
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtTraceEvent
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
Process Shell Execute
  • CreateProcess
Encryption Used
  • BCryptOpenAlgorithmProvider
Process Manipulation Evasion
  • ReadProcessMemory

Shell Command Execution

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\\dw20.exe dw20.exe -x -s 700

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