Threat Database Trojans Trojan.MSIL.Krypt.YDJD

Trojan.MSIL.Krypt.YDJD

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 22,628
Threat Level: 80 % (High)
Infected Computers: 10
First Seen: May 7, 2022
Last Seen: May 18, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Krypt.YDJD 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 steps to remove it from your system. It is essential to address this issue promptly to prevent potential damage to your data and system integrity.

What Is Trojan.MSIL.Krypt.YDJD?

Trojan.MSIL.Krypt.YDJD is identified as a Trojan-type threat, which is a broad category of malware designed to deceive users into installing it on their systems. Trojans can lead to various malicious activities, including data theft, unauthorized access, and further malware distribution. The name suggests it may involve encryption or obfuscation techniques, but without specific details, it's crucial to focus on general removal and protection strategies.

How Trojan.MSIL.Krypt.YDJD Operates

Trojans typically operate by disguising themselves as legitimate software or attachments. Once installed, they can create backdoors for remote access, allowing attackers to control the infected system. They might also download additional malware, steal sensitive information, or disrupt system operations. Understanding the operational mechanisms of Trojans emphasizes the importance of vigilance when interacting with emails, downloads, and software installations from unverified sources.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely, depending on the specific goals of the malware. Common indicators include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs and icons. Some Trojans may also lead to changes in browser settings, unexpected pop-ups, or redirection to suspicious websites. Recognizing these symptoms early can help in mitigating the damage and facilitating a quicker response to the infection.

How to Remove Trojan.MSIL.Krypt.YDJD

  1. Enter Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This mode allows you to use the internet to download necessary removal tools while restricting malicious programs from running.
  2. Conduct a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated to the latest version to maximize its effectiveness against the latest threats.
  3. Uninstall suspicious programs that were recently installed or seem unrelated to your usual software suite. Be cautious and verify the identity of each program before uninstalling to avoid removing legitimate applications.
  4. Reset your browsers, including Chrome, Firefox, and Edge, to their default settings. This step can help remove any malicious extensions or settings changes made by the Trojan.
  5. After completing the above steps, reboot your system and perform another scan to ensure that the threat has been fully removed. This final scan is crucial for verifying the effectiveness of the removal process.

Conclusion

Removing Trojan.MSIL.Krypt.YDJD requires a systematic approach to ensure all components of the malware are eliminated from your system. By following the steps outlined in this report and maintaining a proactive stance against malware, you can protect your system and data from potential threats. Regularly updating your operating system, applications, and security software, along with practicing safe computing habits, are key to preventing future infections and safeguarding your digital environment.

Analysis Report

General information

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

Known Samples

MD5: 67f61cab1e9df474a62e580c472ad583
SHA1: 84d18870bc6c1375fa45824f0be75f159d5424d5
SHA256: 72A149EB52D18D9159FB75DB0857FC412DA3794E25E4344628934AC2F234B35A
File Size: 408.06 KB, 408064 bytes
MD5: 47db685b0de64f6dfffcec07fc67ffe4
SHA1: 57f26e0133e8d05c9d4aeac1eb90076be55e1e2d
SHA256: AAFE02207A7FC61BF3931971901839847E654C0088E0A4C42BD3FB9CC6C5ECD7
File Size: 4.16 MB, 4163584 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 GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
Show More
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

Windows PE Version Information

Name Value
Assembly Version
  • 1.1.3.0
  • 1.0.0.0
Comments StikxX
Company Name
  • Kubota Corp.
  • StikxX
File Description
  • DataMonitor
  • MW3 Mega Unlocker
File Version
  • 1.1.3.0
  • 1.0.0.0
Internal Name
  • DataMonitor.dll
  • MW3 Mega Unlocker.exe
Legal Copyright
  • Copyright (C) Kubota Corp. 2011
  • Copyright © 2011
Original Filename
  • DataMonitor.dll
  • MW3 Mega Unlocker.exe
Product Name
  • Diagmaster 03
  • StikxX
Product Version
  • 1.1.3.0
  • 1.0.0.0

File Traits

  • .NET
  • dll
  • HighEntropy
  • NewLateBinding
  • WriteProcessMemory
  • x86

Block Information

Total Blocks: 1,097
Potentially Malicious Blocks: 319
Whitelisted Blocks: 613
Unknown Blocks: 165

Visual Map

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

Files Modified

File Attributes
\device\namedpipe\gmdasllogger Generic Write,Read Attributes
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.0.regtrans-ms Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\appcompat\programs\amcache.hve Read Data,Read Control,Write Data
c:\windows\appcompat\programs\amcache.hve Write Attributes

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 jk�8��jg�B �� �6 �v �� 7� xy �� ���T�B���������%����Bx�<�!�R#��$kF$��%�&� &�-'�!(�(X�(�) ;)�`*J*9*�",=�-!R1`1�1HO5,]5�G>��@V�@�*B E�mF Fy�G�IH[uH�pH�� RegNtPreCreateKey
HKLM\system\software\microsoft\tip\aggregateresults::data �ӹ��J��@+z��,��+z��Tg�4 ��|��=�\��lk%KϚ����Ϛ����Ϛ����Ϛ���r,m�r�S��= ������ RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAdjustPrivilegesToken
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
Show More
  • 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!NtQueryDebugFilterState
  • 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!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReadVirtualMemory
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • 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
Process Manipulation Evasion
  • NtUnmapViewOfSection
  • ReadProcessMemory
Process Shell Execute
  • CreateProcess
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
User Data Access
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\84d18870bc6c1375fa45824f0be75f159d5424d5_0000408064.,LiQMAxHB
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\\dw20.exe dw20.exe -x -s 872

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