Threat Database Trojans Trojan.Kryptik.NRU

Trojan.Kryptik.NRU

By CagedTech in Trojans

Analysis Report

General information

Family Name: Trojan.Kryptik.NRU
Signature status: No Signature

Known Samples

MD5: 10099927ca73bee3d27af908fdb8db33
SHA1: 483a5f308ae8513546839d9b9e613ba5052f1423
SHA256: 237F734054CA9AC3E5E2B612DF29132301C4BF0530218D6275C415C11B5971B7
File Size: 828.42 KB, 828416 bytes
MD5: 155af2bd59aaead8f4020d3a19c1765c
SHA1: 926b7353ffff7a34e1b73a5888eef4a734fb74bd
SHA256: 5453ACF964552200893BD02B4AFEF111F87AC65F14FEEFE843A39F3D6042B9DF
File Size: 844.80 KB, 844800 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 has TLS information
  • File is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is Native application (NOT .NET application)
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  • 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 Traits

  • fptable
  • HighEntropy
  • No Version Info
  • x86

Block Information

Total Blocks: 1,194
Potentially Malicious Blocks: 343
Whitelisted Blocks: 851
Unknown Blocks: 0

Visual Map

x x x x x x 0 0 0 0 x x x x x x 0 0 x x 0 0 x 0 x x x 0 x x x x x 0 0 x x x x 0 x x x 0 0 x 0 x 0 0 0 x 0 0 x x 0 0 0 x 0 0 x 0 x x x x 0 x x 0 x x x x 0 x x x x x 0 0 0 x 0 x 0 0 x 0 x x x x x x x 0 0 x x x 0 0 0 0 0 x 0 x x x x 0 x 0 x x 0 x x x x x 0 x x 0 x x 0 x x 0 x 0 x 0 x x x x 0 x x x 0 x x x x x x x x x 0 x 0 x 0 0 x x 0 x x 0 0 x 0 x 0 x x x 0 x x 0 0 x x x x x x 0 x 0 x x x x 0 0 x 0 0 x x x x 0 x 0 x x x 0 0 x x x x 0 0 x x x x x 0 x 0 x x 0 x x 0 x x 0 0 x 0 0 0 x x x x 0 x 0 0 x 0 x x x x x x 0 x 0 x 0 x x x 0 x x 0 x 0 x x 0 x x x 0 x 0 0 x x x 0 x x x 0 x 0 0 x x x x 0 x x 0 x x 0 0 0 0 x 0 0 x 0 x x x x x x 0 x x 0 x x 0 x x x 0 x x x x x x x 0 x 0 0 x x 0 x x x x x x x 0 0 0 x x 0 x x 0 x x x x 0 x 0 x x x 0 x 0 x x x x x x 0 0 x x x 0 x x x x x 0 x x x 0 x x 0 x x 0 x 0 x x x x 0 x 0 x 0 0 x x x 0 x 0 0 0 x 0 x 0 x 0 0 x x x x x 0 x 0 x 0 x 0 x x x x x x x 0 x x x x 0 0 x x 0 0 x x x 0 0 x 0 x x x 0 0 x x x x x x 0 x x x 0 x x x x x 0 x x x 0 x x x x x 0 x 0 x x x x x 0 0 x x x x x x x 0 0 x 0 0 x 0 0 x 0 0 x x x 0 0 0 0 2 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 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 1 3 1 2 0 0 0 1 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 0 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 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 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0 1 2 0 0 1 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 0 0 0 0 1 0 0 0 0 0 0 2 2 1 1 0 0 1 0 0 0 0 2 2 2 2 0 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 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 2 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 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 2 0 0 0 0 0 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 1 0 0 0 2 2 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 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

File Attributes
c:\users\user\appdata\local\temp\4781726940\fwkdagwk.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144

Registry Modifications

Key::Value Data API Name
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::proxybypass  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::intranetname  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::uncasintranet  RegNtPreCreateKey
HKCU\software\microsoft\windows\currentversion\internet settings\zonemap::autodetect RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475 フȁ䊩龡^ʴ紘Çȭ獖}ɯ⦘·ˇ좟Êh,֢ RegNtPreCreateKey
HKLM\system\controlset001\services\bam\state\usersettings\s-1-5-21-3119368278-1123331430-659265220-1001::\device\harddiskvolume2\windows\system32\conhost.exe ὼ摴⛙ǜ RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 RegNtPreCreateKey

Windows API Usage

Category API
User Data Access
  • GetUserName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • ShellExecute
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAddAtomEx
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
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  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • 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!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • win32u.dll!NtGdiAnyLinkedFonts
  • win32u.dll!NtGdiBitBlt
  • win32u.dll!NtGdiCreateBitmap
  • win32u.dll!NtGdiCreateCompatibleBitmap
  • win32u.dll!NtGdiCreateCompatibleDC
  • win32u.dll!NtGdiCreateDIBitmapInternal
  • win32u.dll!NtGdiCreateRectRgn
  • win32u.dll!NtGdiCreateSolidBrush
  • win32u.dll!NtGdiDeleteObjectApp
  • win32u.dll!NtGdiDoPalette
  • win32u.dll!NtGdiDrawStream
  • win32u.dll!NtGdiExtGetObjectW
  • win32u.dll!NtGdiExtTextOutW
  • win32u.dll!NtGdiFontIsLinked
  • win32u.dll!NtGdiGetCharABCWidthsW
  • win32u.dll!NtGdiGetDCDword
  • win32u.dll!NtGdiGetDCObject
  • win32u.dll!NtGdiGetDeviceCaps
  • win32u.dll!NtGdiGetDIBitsInternal
  • win32u.dll!NtGdiGetEntry
  • win32u.dll!NtGdiGetFontData
  • win32u.dll!NtGdiGetGlyphIndicesW
  • win32u.dll!NtGdiGetOutlineTextMetricsInternalW
  • win32u.dll!NtGdiGetRandomRgn
  • win32u.dll!NtGdiGetRealizationInfo
  • win32u.dll!NtGdiGetTextFaceW
  • win32u.dll!NtGdiGetTextMetricsW
  • win32u.dll!NtGdiGetWidthTable
  • win32u.dll!NtGdiHfontCreate
  • win32u.dll!NtGdiIntersectClipRect
  • win32u.dll!NtGdiQueryFontAssocInfo
  • win32u.dll!NtGdiSelectBitmap
  • win32u.dll!NtGdiSetLayout
  • win32u.dll!NtGdiStretchDIBitsInternal
  • win32u.dll!NtUserBeginPaint
  • win32u.dll!NtUserBuildHwndList
  • win32u.dll!NtUserCalcMenuBar
  • win32u.dll!NtUserCallNoParam
  • win32u.dll!NtUserCallOneParam

55 additional items are not displayed above.

Process Terminate
  • TerminateProcess

Shell Command Execution

C:\Users\Wkkvigyy\AppData\Local\Temp\4781726940\Fwkdagwk.exe

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