Static task
static1
Behavioral task
behavioral1
Sample
2024-01-08_364369aad1ec297b2734d6d720f957b9_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-08_364369aad1ec297b2734d6d720f957b9_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-08_364369aad1ec297b2734d6d720f957b9_ryuk
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Size
305KB
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MD5
364369aad1ec297b2734d6d720f957b9
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SHA1
d1ba89d4b86122d07103cf0f4c2e0c027a9723a3
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SHA256
2925b76e85e100b7c90e7c2875960e0b3ed0e7f0e7ae7d1ffb8a5a55846bed44
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SHA512
64627fda7e3a626a80d14cb3313528a3ed6c98661d3e0c4e0dac9295936f53c31407c909d1d0f53ec506884635b4f87d45b92e14ed22bf7e3c8cdc940852717c
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SSDEEP
6144:CEpzrv3NJCBUFkEBTkrsMDvMt6vOtFE7MQj2NKohA1ewG8f:thrfS+WESrvv0xKoCek
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-08_364369aad1ec297b2734d6d720f957b9_ryuk
Files
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2024-01-08_364369aad1ec297b2734d6d720f957b9_ryuk.exe windows:6 windows x64 arch:x64
a8ad7225482f8fac85fe7ca07037a584
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
DecodePointer
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
GetProcessHeap
GetCurrentProcess
CopyFileA
GetPrivateProfileIntA
WritePrivateProfileStringA
GetModuleFileNameA
GetPrivateProfileStringA
GetSystemDirectoryA
GetTickCount
OutputDebugStringA
lstrlenA
CreateFileA
GetFileSize
lstrcpynA
SetFileAttributesA
MoveFileA
SetFilePointer
GetCurrentProcessId
GetCurrentThreadId
GetLocalTime
GetWindowsDirectoryA
GetTempPathA
GetTempFileNameA
CreateProcessA
Sleep
MoveFileExA
GetProcAddress
FreeLibrary
MultiByteToWideChar
SetEndOfFile
CreateFileW
WriteConsoleW
DeleteCriticalSection
InitializeCriticalSectionEx
GetLastError
RaiseException
WideCharToMultiByte
DeleteFileA
CloseHandle
LocalFree
FindClose
FindFirstFileExA
WriteFile
ReadConsoleW
SetStdHandle
SetEnvironmentVariableA
FreeEnvironmentStringsW
SetFilePointerEx
ReadFile
GetConsoleMode
GetConsoleCP
GetEnvironmentStringsW
GetOEMCP
IsValidCodePage
FindNextFileA
EnterCriticalSection
LeaveCriticalSection
EncodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
IsDebuggerPresent
OutputDebugStringW
SetEvent
ResetEvent
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
GetStartupInfoW
QueryPerformanceCounter
InitializeSListHead
RtlPcToFileHeader
RtlUnwindEx
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
GetFileType
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
user32
CharUpperA
ole32
CoInitializeEx
CoInitializeSecurity
oleaut32
VariantClear
Sections
.text Size: 193KB - Virtual size: 192KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 90KB - Virtual size: 90KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 11KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 10KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 1024B - Virtual size: 708B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ