Threat Database Trojans Trojan.MSIL.Krypt.KEF

Trojan.MSIL.Krypt.KEF

By CagedTech in Trojans

Analysis Report

General information

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

Known Samples

MD5: b91191613897ec505b2500148ae19195
SHA1: bcbcf616b52ac4f507cb98d2018a42aba60dc4d9
SHA256: BF4912CFF3D5B486382608B1A390D06ABB9BC895C9159D31341693E86E2A9285
File Size: 4.89 MB, 4886528 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have relocations information
  • File doesn't have security information
  • File is .NET application
  • File is 64-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)

File Icons

Windows PE Version Information

Name Value
Assembly Version 5.9.27.0
Company Name CADViewer
File Description CADViewer
File Version 5.9.27
Internal Name CADViewer.exe
Original Filename CADViewer.exe
Product Name CADViewer
Product Version 5.9.27

File Traits

  • .NET
  • HighEntropy
  • Run
  • x64

Block Information

Total Blocks: 1,447
Potentially Malicious Blocks: 138
Whitelisted Blocks: 659
Unknown Blocks: 650

Visual Map

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

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
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  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtDeviceIoControlFile
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • 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!NtOpenThreadToken
  • 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!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!NtResumeThread
  • ntdll.dll!NtSetEvent
  • 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!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider

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