Static task
static1
Behavioral task
behavioral1
Sample
2024-02-04_9b81ca6c057fd6194e34b37418fa201b_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-04_9b81ca6c057fd6194e34b37418fa201b_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-04_9b81ca6c057fd6194e34b37418fa201b_ryuk
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Size
139KB
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MD5
9b81ca6c057fd6194e34b37418fa201b
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SHA1
ade38199506e56393c5c36d5c580249fa6a296c5
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SHA256
fc013f78af73ba7380f52d55e7eb36389807d9f278e75117d08d4621f03922ff
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SHA512
41fd5bd5cde703ecf58dc00972b29a495838ea6b2b816d18bfe2f68342ff1785a7bde7728912083d8c7a3d318f6ae0fbd02d0ab6e2145416b26ba7cb009e7dda
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SSDEEP
3072:TyTZXYw/VAJJhxN4noPgEu8iET8ymDHYS2Lvblv:TG/UJh8GNZi5ymED
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-04_9b81ca6c057fd6194e34b37418fa201b_ryuk
Files
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2024-02-04_9b81ca6c057fd6194e34b37418fa201b_ryuk.exe windows:5 windows x64 arch:x64
12ac607aef5995042dcaaa0ee9a575a6
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
GetStdHandle
GetCommandLineW
WriteConsoleW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetModuleHandleW
RtlUnwindEx
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
GetConsoleCP
WriteFile
GetModuleFileNameW
GetCurrentProcess
ExitProcess
TerminateProcess
GetModuleHandleExW
GetCommandLineA
HeapFree
HeapAlloc
CompareStringW
LCMapStringW
GetFileType
SetStdHandle
GetConsoleMode
CloseHandle
WaitForSingleObject
GetExitCodeProcess
CreateProcessW
GetFileAttributesExW
WideCharToMultiByte
CreateFileW
SetConsoleMode
GetNumberOfConsoleInputEvents
ReadConsoleInputW
PeekConsoleInputA
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
MultiByteToWideChar
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
GetStringTypeW
GetProcessHeap
FlushFileBuffers
GetFileSizeEx
SetFilePointerEx
HeapSize
HeapReAlloc
RaiseException
Sections
.text Size: 86KB - Virtual size: 86KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 41KB - Virtual size: 41KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 168B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ