Threat Database Trojans Trojan.Nekark.I

Trojan.Nekark.I

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 25,302
Threat Level: 80 % (High)
Infected Computers: 51
First Seen: March 12, 2025
Last Seen: April 24, 2026
OS(es) Affected: Windows

Your system has been detected with a threat known as Trojan.Nekark.I, which suggests it may be a type of Trojan horse malware. This type of malware is designed to deceive users by appearing as legitimate software, but it can cause significant harm to your computer and compromise your personal data. It is essential to understand the nature of this threat and take immediate action to remove it from your system.

What Is Trojan.Nekark.I?

Trojan.Nekark.I is a type of malware that can infect your computer through various means, such as downloading malicious software, opening suspicious email attachments, or visiting compromised websites. Once installed, it can give unauthorized access to your system, allowing hackers to steal sensitive information, install additional malware, or use your computer for malicious activities. The name "Trojan.Nekark.I" itself does not directly indicate a specific malware family, but rather serves as a detection name for the identified threat.

How Trojan.Nekark.I Operates

Trojan.Nekark.I operates by exploiting vulnerabilities in your system or using social engineering tactics to trick you into installing it. Once installed, it can run in the background, hidden from your view, and perform various malicious activities. It may communicate with its command and control servers to receive updates, steal data, or install additional malware. Trojan.Nekark.I can also disable your security software, making it difficult to detect and remove.

Symptoms of Infection

The symptoms of a Trojan.Nekark.I infection can vary, but common signs include slow system performance, frequent crashes, and unfamiliar programs or icons on your desktop. You may also notice unusual network activity, such as increased data usage or unfamiliar connections. Additionally, you may receive alerts from your security software or notice that your browser is being redirected to suspicious websites.

  • Unexplained changes to your system settings or configuration
  • Appearance of unfamiliar programs or toolbars
  • Increased pop-up ads or suspicious browser activity
  • System crashes or freezes
  • Unusual network activity or data usage

How to Remove Trojan.Nekark.I

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove the malware.
  3. Uninstall any suspicious programs or software that you do not recognize or that were installed recently.
  4. Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your computer and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Nekark.I from your system requires immediate attention and careful action. By following the steps outlined above, you can help ensure that your system is clean and secure. It is essential to remain vigilant and take proactive measures to protect your system from future infections, such as keeping your operating system and software up to date, using strong antivirus software, and being cautious when downloading software or opening email attachments. Remember, prevention is key to protecting your digital assets and personal data.

Analysis Report

General information

Family Name: Trojan.Nekark.I
Signature status: No Signature

Known Samples

MD5: 218fff0e09b95827ec39e64f20aa312c
SHA1: 0cb86935e5438efb584b812926ea52623171344f
File Size: 364.54 KB, 364544 bytes
MD5: 7a6c8d496941a5ca26085509ef0b4e60
SHA1: ea088506c51c0764cb9488c2d2895f0331997b07
File Size: 368.64 KB, 368640 bytes
MD5: 40b6f612fd144358c56ce77de8d0f5f4
SHA1: f6375f1a5fe74ca742bbdbf9857a89560e7d344f
File Size: 365.06 KB, 365056 bytes
MD5: 62d76e6a8252a9916547a194e980c093
SHA1: 25d56c7544edde7230941168580c5e2e526e6c51
SHA256: B2E481882E72A0F03464AF6CB4CF61D45C4023225B658202A5DAB853A3B1A46C
File Size: 583.21 KB, 583208 bytes
MD5: 289f7175e2e59f5dc8d5c2a8416131eb
SHA1: 061dd5ef0fd2af02a97260dc70bba14baa8d5d74
SHA256: D6BAE945450A2ADE2026F4618A121F1F0A40F3CBE45BD64447BA8CD9B912B35C
File Size: 367.62 KB, 367616 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is 64-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is Native application (NOT .NET application)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

File Traits

  • GetConsoleWindow
  • No Version Info
  • x64

Block Information

Total Blocks: 1,192
Potentially Malicious Blocks: 11
Whitelisted Blocks: 1,170
Unknown Blocks: 11

Visual Map

? 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 x x x x x ? 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 0 x 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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Files Modified

File Attributes
\device\namedpipe\dav rpc service Generic Read,Write Data,Write Attributes,Write extended,Append data
\device\namedpipe\pshost.133968368263296082.4404.defaultappdomain.powershell Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288
\device\namedpipe\pshost.133968748157910230.5148.defaultappdomain.powershell Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288
\device\namedpipe\pshost.133978078712655547.564.defaultappdomain.powershell Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288
\device\namedpipe\pshost.134087438884424294.5236.defaultappdomain.powershell Generic Read,Write Data,Write Attributes,Write extended,Append data,LEFT 524288
\device\namedpipe\wkssvc 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.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:\users\user\appdata\local\temp\__psscriptpolicytest_2b53f31j.mg1.psm1 Generic Write,Read Attributes
Show More
c:\users\user\appdata\local\temp\__psscriptpolicytest_3uetfm21.ghc.psm1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_ipwo5x2f.lzd.ps1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_lqkurioc.1w1.psm1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_nf4w1ctj.sui.ps1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_oklhrc3v.ivr.ps1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_qk2oyuqb.35o.ps1 Generic Write,Read Attributes
c:\users\user\appdata\local\temp\__psscriptpolicytest_ut0ba1lc.uwp.psm1 Generic Write,Read Attributes

Registry Modifications

Key::Value Data API Name
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe 쉪楰Ǜ RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe �;����� RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe ��KMZ�� RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\cmd.exe 뫺덺忐ǜ RegNtPreCreateKey

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAllocateLocallyUniqueId
  • ntdll.dll!NtAlpcConnectPort
  • ntdll.dll!NtAlpcConnectPortEx
  • ntdll.dll!NtAlpcCreateResourceReserve
  • ntdll.dll!NtAlpcCreateSecurityContext
  • ntdll.dll!NtAlpcQueryInformation
  • ntdll.dll!NtAlpcQueryInformationMessage
  • ntdll.dll!NtAlpcSendWaitReceivePort
Show More
  • ntdll.dll!NtAlpcSetInformation
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
  • ntdll.dll!NtCancelTimer2
  • ntdll.dll!NtCancelWaitCompletionPacket
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCompareSigningLevels
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtCreateKey
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtCreateTimer
  • ntdll.dll!NtCreateTimer2
  • ntdll.dll!NtCreateWaitCompletionPacket
  • ntdll.dll!NtCreateWorkerFactory
  • ntdll.dll!NtDelayExecution
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFlushProcessWriteBuffers
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtFsControlFile
  • ntdll.dll!NtGetCachedSigningLevel
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtNotifyChangeKey
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • 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!NtQueryInformationJobObject
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryObject
  • 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!NtQueueApcThreadEx2
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReadRequestData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationObject
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetTimer2
  • ntdll.dll!NtSetTimerEx
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert

29 additional items are not displayed above.

User Data Access
  • GetUserDefaultLocaleName
  • GetUserName
  • GetUserNameEx
  • GetUserObjectInformation
Process Shell Execute
  • CreateProcess
Encryption Used
  • BCryptOpenAlgorithmProvider
Other Suspicious
  • AdjustTokenPrivileges
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection

Shell Command Execution

C:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Ybokgvbj\AppData\Local\jfnzsdpnhgq'
C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Ybokgvbj\AppData\Local\jfnzsdpnhgq'
C:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Pnhvgwdh\AppData\Local\avwjhypx'
C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Pnhvgwdh\AppData\Local\avwjhypx'
C:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Lttejrdi\AppData\Local\eqziw'
Show More
C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Lttejrdi\AppData\Local\eqziw'
C:\WINDOWS\system32\cmd.exe C:\WINDOWS\system32\cmd.exe /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Zliytdfv\AppData\Local\yhqrvibnb'
C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe powershell -Command "Add-MpPreference -ExclusionPath 'C:\Users\Zliytdfv\AppData\Local\yhqrvibnb'

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