Static task
static1
Behavioral task
behavioral1
Sample
2024-05-14_3b5897f04cd73baa9aee5bee1f10b7a1_ryuk.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-14_3b5897f04cd73baa9aee5bee1f10b7a1_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-14_3b5897f04cd73baa9aee5bee1f10b7a1_ryuk
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Size
2.8MB
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MD5
3b5897f04cd73baa9aee5bee1f10b7a1
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SHA1
3f115a79f7f85e8c399dc5f6b416a038e59e17fe
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SHA256
6a654077cdff35b007d4855669c51dd0131837cb144032ed8afb4565240d2c62
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SHA512
f0e8b07ad7aff4a69bf151fbde0de4c2f720d8984bb2b29b000683460dc36f5b4746fcf6b5d2e932f631c5eb2393893e6e7ab9863be279fb1da22349e7057d72
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SSDEEP
49152:C4RzwVN6ve3YUv96egIYSRBjo38O/0c0NfbtiDSXtPqCh9yYgP:Ce4pNfKIJhLgP
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-14_3b5897f04cd73baa9aee5bee1f10b7a1_ryuk
Files
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2024-05-14_3b5897f04cd73baa9aee5bee1f10b7a1_ryuk.exe windows:6 windows x64 arch:x64
cc5e9bb070c668f71fac9055d2f1cd5e
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
CloseHandle
DuplicateHandle
WaitForSingleObjectEx
Sleep
GetCurrentProcess
GetCurrentThread
GetCurrentThreadId
GetExitCodeThread
GetNativeSystemInfo
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
QueryPerformanceCounter
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetTickCount
GetModuleHandleW
GetProcAddress
WideCharToMultiByte
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
InitializeSListHead
CreateTimerQueue
GetLastError
SetEvent
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
RegisterWaitForSingleObject
UnregisterWait
EncodePointer
GetThreadTimes
FreeLibrary
FreeLibraryAndExitThread
GetModuleFileNameW
GetModuleHandleA
LoadLibraryExW
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
ReleaseSemaphore
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
LoadLibraryW
WaitForSingleObject
RtlPcToFileHeader
RaiseException
RtlUnwindEx
ReadFile
ExitThread
GetModuleHandleExW
HeapAlloc
HeapFree
ExitProcess
GetModuleFileNameA
MultiByteToWideChar
GetStdHandle
WriteFile
GetCommandLineA
GetCommandLineW
GetACP
GetConsoleCP
GetConsoleMode
GetFileType
CompareStringW
LCMapStringW
GetStringTypeW
SetFilePointerEx
ReadConsoleW
HeapReAlloc
GetProcessHeap
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
OutputDebugStringA
SetStdHandle
FlushFileBuffers
CreateFileW
WriteConsoleW
HeapSize
SetEndOfFile
CreateSemaphoreA
UnmapViewOfFile
GetFileSizeEx
CreateFileMappingA
MapViewOfFile
DecodePointer
ResetEvent
user32
SystemParametersInfoW
Sections
.text Size: 2.2MB - Virtual size: 2.2MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 376KB - Virtual size: 375KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 15KB - Virtual size: 25KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 84KB - Virtual size: 84KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 3KB - Virtual size: 2KB
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: 33KB - Virtual size: 32KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 14KB - Virtual size: 13KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ