Threat Database Trojans Trojan.MSIL.Krypt.YACE

Trojan.MSIL.Krypt.YACE

By CagedTech in Trojans

Analysis Report

General information

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

Known Samples

MD5: fe52552059b8137a41f9435aad7903a7
SHA1: 15ea5e6680d9725efd9eb34440b97e09443ec9a4
SHA256: 5B19FD8FAF5D00D8767F15B918A246D4C0327F277D9606EBAFBC57AA252431A4
File Size: 1.40 MB, 1397248 bytes
MD5: 3499191a58848b734f309164307dead3
SHA1: 207b71030c5d7fdc8974a87b940893fa60ae7bdf
SHA256: 6124803FBB4B0976023C2B5CB867B0443B3DF9FE14F44753B5F8B5093235D243
File Size: 1.63 MB, 1633792 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 64-bit executable
  • 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)

Windows PE Version Information

Name Value
Assembly Version
  • 1.0.5919.28420
  • 1.0.4986.15296
File Description
  • Aqkjsal
  • Hgfdw
File Version
  • 1.0.7321.10555
  • 1.0.1445.9079
Internal Name
  • Aqkjsal.exe
  • Hgfdw.exe
Legal Copyright
  • Copyright © 2020
  • Copyright © 2024
Original Filename
  • Aqkjsal.exe
  • Hgfdw.exe
Product Name
  • Aqkjsal
  • Hgfdw
Product Version
  • 1.0.7321.10555
  • 1.0.1445.9079

File Traits

  • .NET
  • HighEntropy
  • msil.krypt
  • x64
  • x86

Block Information

Total Blocks: 1,483
Potentially Malicious Blocks: 626
Whitelisted Blocks: 853
Unknown Blocks: 4

Visual Map

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

Similar Families

  • MSIL.Krypt.YACE

Files Modified

File Attributes
c:\users\user\appdata\local\temp\adaa4fbc41\lymmqeui.exe Generic Read,Write Data,Write Attributes,Write extended,Append data,Delete,LEFT 262144
c:\windows\tasks\lymmqeui.job Generic Write,Read Attributes

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 RegNtPreCreateKey

Windows API Usage

Category API
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Encryption Used
  • BCryptOpenAlgorithmProvider
  • CryptAcquireContext
Anti Debug
  • NtQuerySystemInformation
Other Suspicious
  • AdjustTokenPrivileges
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcConnectPortEx
  • ntdll.dll!NtAlpcQueryInformation
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtAssociateWaitCompletionPacket
  • ntdll.dll!NtCancelTimer2
  • ntdll.dll!NtCancelWaitCompletionPacket
  • ntdll.dll!NtClearEvent
Show More
  • ntdll.dll!NtClose
  • ntdll.dll!NtCompareObjects
  • ntdll.dll!NtCompareSigningLevels
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
  • ntdll.dll!NtCreateThreadEx
  • ntdll.dll!NtCreateTimer2
  • ntdll.dll!NtCreateUserProcess
  • 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!NtGetCachedSigningLevel
  • ntdll.dll!NtGetContextThread
  • ntdll.dll!NtGetWriteWatch
  • 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!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!NtResetWriteWatch
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetContextThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSetTimer2
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtUnsubscribeWnfStateChange
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • ntdll.dll!NtYieldExecution
  • UNKNOWN
Process Manipulation Evasion
  • NtUnmapViewOfSection

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