Threat Database Trojans Trojan.MSIL.Kryptik.FE

Trojan.MSIL.Kryptik.FE

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 3
First Seen: September 25, 2025
Last Seen: March 31, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Kryptik.FE on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operational methods, symptoms of infection, and most importantly, guidance on how to remove it from your computer.

What Is Trojan.MSIL.Kryptik.FE?

Trojan.MSIL.Kryptik.FE is identified as a Trojan-type threat. Trojans are malicious programs that can allow unauthorized access to a computer, leading to various forms of cyber attacks, including data theft, spyware installation, and the use of the infected computer as part of a botnet for malicious activities. The name suggests it might be related to or part of a broader family of malware known for its ability to evade detection and perform malicious activities on infected systems.

How Trojan.MSIL.Kryptik.FE Operates

Like other Trojans, Trojan.MSIL.Kryptik.FE is designed to infiltrate a system without being detected, often disguising itself as legitimate software. Once inside, it can open a backdoor to allow remote access, enabling hackers to steal sensitive information, install additional malware, or use the infected computer for malicious purposes. The specific operations of Trojan.MSIL.Kryptik.FE can vary, but its primary goal is 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. However, common signs include unusual system behavior, such as slow performance, frequent crashes, or the appearance of unfamiliar programs and icons. Additionally, you might notice increased network activity, even when you're not using the internet, or find that your antivirus software is disabled. If you suspect your computer is infected, it's crucial to act quickly to minimize potential damage.

How to Remove Trojan.MSIL.Kryptik.FE

  1. Boot into Safe Mode with Networking: This will help prevent the malware from loading and give you a cleaner environment to work in. Restart your computer, and as it boots up, press the F8 key repeatedly until you see the Advanced Boot Options menu. Select Safe Mode with Networking and press Enter.
  2. Perform a Full Scan with a Reputable Tool: Use a trusted antivirus or anti-malware tool, such as SpyHunter, to scan your system for malware. Ensure your chosen tool is updated with the latest definitions to increase the chances of detecting and removing the threat.
  3. Uninstall Suspicious Programs: Go through your installed programs and remove anything that looks suspicious or unfamiliar. Be cautious and only uninstall programs you are sure are not needed or are known to be malicious.
  4. Reset Your Browser Settings: Malware often alters browser settings. Resetting Chrome, Firefox, Edge, or any other browser you use can help remove unwanted extensions and restore default settings. You can usually find the reset option in the browser's settings or preferences menu.
  5. Reboot and Re-scan: After taking the above steps, restart your computer in normal mode and perform another full scan with your antivirus or anti-malware tool to ensure the threat has been fully removed.

Conclusion

Removing Trojan.MSIL.Kryptik.FE requires careful and systematic steps to ensure the malware is completely eradicated from your system. It's also crucial to take preventive measures to avoid future infections, such as keeping your operating system and software up to date, using strong antivirus protection, and being cautious when opening email attachments or downloading software from the internet. By following the guidance provided and maintaining good cybersecurity practices, you can protect your computer and personal data from malicious threats like Trojan.MSIL.Kryptik.FE.

Analysis Report

General information

Family Name: Trojan.MSIL.Kryptik.FE
Signature status: No Signature

Known Samples

MD5: 47316a1015226e9f15f8d65b3d2bdbb3
SHA1: 663a0079d23f89609915d2c5f0758da2130a47e6
SHA256: 70B6BFC17C23EEF4CDBF1FBA85A334903847B04D947088321353404E28D4B46E
File Size: 1.65 MB, 1651712 bytes
MD5: 4ec8303b018fb76cd1abd7a134710572
SHA1: 1ab28c47e59416aee6a2ce46223a45840279c2d8
SHA256: 9D871B65C00885EA6CD3A04760DBB9F741CFDBD53C0F2ABC52779C0E6B19264B
File Size: 1.65 MB, 1651712 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)
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  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 0.0.0.0
File Version 0.0.0.0
Internal Name
  • BELLOS_Persistent.exe
  • NW2025_Persistent.exe
Original Filename
  • BELLOS_Persistent.exe
  • NW2025_Persistent.exe
Product Version 0.0.0.0

File Traits

  • .NET
  • x86

Block Information

Total Blocks: 10
Potentially Malicious Blocks: 10
Whitelisted Blocks: 0
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Kryptik.FE

Files Modified

File Attributes
c:\users\user\appdata\local\temp\773815b0-9c67-4820-b106-c0861205ce2c.exe Generic Write,Read Attributes
c:\users\user\appdata\roaming\microsoft\windows\start menu\programs\startup\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712.bat Generic Write,Read Attributes
c:\users\user\appdata\roaming\microsoft\windows\start menu\programs\startup\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712.bat Synchronize,Write Attributes
c:\users\user\appdata\roaming\microsoft\windows\start menu\programs\startup\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712.bat Generic Write,Read Attributes
c:\users\user\appdata\roaming\microsoft\windows\start menu\programs\startup\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712.bat Synchronize,Write Attributes

Registry Modifications

Key::Value Data API Name
HKCU\software\microsoft\windows\currentversion\run::663a0079d23f89609915d2c5f0758da2130a47e6_0001651712 "c:\users\user\downloads\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712" RegNtPreCreateKey
HKLM\software\microsoft\windows\currentversion\run::663a0079d23f89609915d2c5f0758da2130a47e6_0001651712 "c:\users\user\downloads\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712" RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe ㋵筇ǜ RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe 铀筇ǜ RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\run::1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712 "c:\users\user\downloads\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712" RegNtPreCreateKey
HKLM\software\microsoft\windows\currentversion\run::1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712 "c:\users\user\downloads\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712" RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe 眘븨ǜ RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe 坼眛븨ǜ RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
Show More
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFlushProcessWriteBuffers
  • 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!NtOpenSemaphore
  • ntdll.dll!NtOpenSymbolicLinkObject
  • ntdll.dll!NtOpenThread
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtPowerInformation
  • 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!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!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTerminateProcess
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForMultipleObjects
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtYieldExecution
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess
  • WriteConsole
Anti Debug
  • IsDebuggerPresent
Process Terminate
  • TerminateProcess
Encryption Used
  • BCryptOpenAlgorithmProvider
  • CryptAcquireContext

Shell Command Execution

"cmd.exe" /c schtasks /create /tn "663a0079d23f89609915d2c5f0758da2130a47e6_0001651712" /tr "\"c:\users\user\downloads\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712\"" /sc onlogon /f /rl highest
C:\WINDOWS\system32\schtasks.exe schtasks /create /tn "663a0079d23f89609915d2c5f0758da2130a47e6_0001651712" /tr "\"c:\users\user\downloads\663a0079d23f89609915d2c5f0758da2130a47e6_0001651712\"" /sc onlogon /f /rl highest
WriteConsole: Access is denied
"cmd.exe" /c schtasks /create /tn "1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712" /tr "\"c:\users\user\downloads\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712\"" /sc onlogon /f /rl highest
C:\WINDOWS\system32\schtasks.exe schtasks /create /tn "1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712" /tr "\"c:\users\user\downloads\1ab28c47e59416aee6a2ce46223a45840279c2d8_0001651712\"" /sc onlogon /f /rl highest

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