Static task
static1
Behavioral task
behavioral1
Sample
2024-01-06_c9d8de3c1c73ad32ea211ff4f2f4778a_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-06_c9d8de3c1c73ad32ea211ff4f2f4778a_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-06_c9d8de3c1c73ad32ea211ff4f2f4778a_ryuk
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Size
339KB
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MD5
c9d8de3c1c73ad32ea211ff4f2f4778a
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SHA1
f76390b138c01f48ad6c87774c2b13b9b1e9b60f
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SHA256
c3f0736ce0336cf522c96e7aa0787b15e83e6abb4d085c1f0f41dd050fbe5709
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SHA512
0e5bbf228c56dac369d59dd6b92efa10198ac92bbd37d8794bb4b43563da6a0b81e04da429b36e1293b77de3215c25c9b6a754d45edf54d9718c620979047a86
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SSDEEP
6144:UZhhb22QMeH9yaVSifP4fJ9OyQrykdS3VZW5Eaq/IPnyohhrMK9:cDQhdyt+4ffORrykyo3
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-06_c9d8de3c1c73ad32ea211ff4f2f4778a_ryuk
Files
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2024-01-06_c9d8de3c1c73ad32ea211ff4f2f4778a_ryuk.exe windows:6 windows x64 arch:x64
1f628841ee07d20aeb7c3f0728a48d7c
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
rdcedmsubip
rdCEDMsub2D
cedmsubip
CEDMsub2D
CEDMsub2Dver
kernel32
HeapSize
IsProcessorFeaturePresent
ReadFile
FindFirstFileA
WriteFile
FindNextFileA
FindClose
CreateFileW
UnmapViewOfFile
GetLastError
CreateFileA
LoadLibraryA
CloseHandle
GetOverlappedResult
GetProcAddress
GetFileType
MapViewOfFile
WideCharToMultiByte
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
EncodePointer
DecodePointer
MultiByteToWideChar
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
SetEvent
ResetEvent
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
SetEndOfFile
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
InitializeSListHead
RtlPcToFileHeader
RaiseException
RtlUnwindEx
FreeLibrary
LoadLibraryExW
ExitProcess
GetModuleHandleExW
QueryPerformanceFrequency
HeapAlloc
HeapReAlloc
HeapFree
GetModuleFileNameA
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
GetConsoleCP
GetConsoleMode
SetFilePointerEx
GetProcessHeap
FindFirstFileExA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetStdHandle
WriteConsoleW
ReadConsoleW
Sections
.text Size: 220KB - Virtual size: 220KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 96KB - Virtual size: 96KB
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: 11KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 1024B - Virtual size: 800B
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