Static task
static1
Behavioral task
behavioral1
Sample
2024-03-29_c37fcc7903c9b53d0373cfa759241633_ryuk.exe
Resource
win7-20240319-en
Behavioral task
behavioral2
Sample
2024-03-29_c37fcc7903c9b53d0373cfa759241633_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-03-29_c37fcc7903c9b53d0373cfa759241633_ryuk
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Size
3.9MB
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MD5
c37fcc7903c9b53d0373cfa759241633
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SHA1
900c5c77c7405bde70ab7401d0b93d48d45a8deb
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SHA256
0fdadb3903128cd6ea4ef89cccf77abbd0c9980e9249af1fc7f753f83b07a2d0
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SHA512
a2f45524bfb47c6114d4a00d801e86e9c4821c6732745048cf98f1a6314756f0bb257f87e6dd3bac518c2f25ad9b39ff3f458703eb78424546d100e7784b3f3d
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SSDEEP
98304:5Gmw3PZY8zDAgnCwNtyZFcRIfMr4x9v7qe7:5G2v/7
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-03-29_c37fcc7903c9b53d0373cfa759241633_ryuk
Files
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2024-03-29_c37fcc7903c9b53d0373cfa759241633_ryuk.exe windows:6 windows x64 arch:x64
26a4ea29aa83f50bed09144868c927b0
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
WakeAllConditionVariable
LeaveCriticalSection
InitializeCriticalSection
InitializeConditionVariable
DeleteCriticalSection
GetCommandLineW
SetConsoleTitleA
GetConsoleTitleA
LocalFree
WideCharToMultiByte
GetStdHandle
MultiByteToWideChar
GetConsoleMode
EnterCriticalSection
WaitForSingleObject
CloseHandle
CreateThread
LoadLibraryA
GetProcAddress
SetEvent
Sleep
CreateEventA
GetNumaHighestNodeNumber
SetThreadPriority
GetCurrentThread
SetThreadGroupAffinity
GetNumaNodeProcessorMaskEx
WriteConsoleW
SetEndOfFile
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
ResetEvent
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
InitializeSListHead
GetCurrentProcess
TerminateProcess
RtlPcToFileHeader
RaiseException
RtlUnwindEx
GetLastError
FreeLibrary
LoadLibraryExW
GetModuleFileNameW
DuplicateHandle
CreateProcessA
ReadFile
ExitProcess
GetModuleHandleExW
SetConsoleCtrlHandler
GetTimeZoneInformation
MoveFileExW
DeleteFileW
CreateFileW
GetDriveTypeW
GetFileType
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
HeapAlloc
HeapReAlloc
HeapFree
GetModuleFileNameA
WriteFile
GetCommandLineA
GetACP
GetExitCodeProcess
GetFileAttributesExW
CreatePipe
GetConsoleCP
GetDateFormatW
GetTimeFormatW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
SetFilePointerEx
ReadConsoleW
FlushFileBuffers
HeapSize
GetCurrentDirectoryW
GetFullPathNameW
SetStdHandle
GetProcessHeap
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SleepConditionVariableCS
shell32
CommandLineToArgvW
advapi32
SystemFunction036
Sections
.text Size: 3.6MB - Virtual size: 3.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 238KB - Virtual size: 238KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 11KB - Virtual size: 38KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 41KB - Virtual size: 40KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rodata Size: 15KB - Virtual size: 14KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 1024B - Virtual size: 828B
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: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ