Static task
static1
Behavioral task
behavioral1
Sample
2024-01-09_8ae1d34ab11a865d1c65ac12459574b7_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-09_8ae1d34ab11a865d1c65ac12459574b7_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-09_8ae1d34ab11a865d1c65ac12459574b7_ryuk
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Size
2.2MB
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MD5
8ae1d34ab11a865d1c65ac12459574b7
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SHA1
122cbb20bd39ceea471a7d164c983a5da38aefc6
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SHA256
4206942e2123a1cb411151e36472b5d916b439941a56fa74ba7d54a3d7c81285
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SHA512
bea69dbd3f4aef6d6a0d36c702d2f6cdce5183ada629a5c9f1c5348eaa9ed553b3488671868a41ec191d3b4eb28afaa573941270adcef217008c6ae2845d78e0
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SSDEEP
24576:5KrXZnSBFb5dEtTgvk9y4B8g/YGuoQSBD7Jy0r:kLZSBFb5dEwS9wNoQa/L
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-09_8ae1d34ab11a865d1c65ac12459574b7_ryuk
Files
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2024-01-09_8ae1d34ab11a865d1c65ac12459574b7_ryuk.exe windows:6 windows x64 arch:x64
c45ab3547ae0e7108984ca13f89c7692
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
ReadFile
WriteFile
CloseHandle
GetLastError
GetOverlappedResult
PostQueuedCompletionStatus
CancelIoEx
WaitForSingleObject
Sleep
HeapCreate
HeapDestroy
HeapAlloc
HeapReAlloc
HeapFree
GetTickCount
CreateIoCompletionPort
SetEvent
ResetEvent
CreateEventW
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableCS
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionAndSpinCount
TryEnterCriticalSection
DeleteCriticalSection
SwitchToFiber
DeleteFiber
ConvertFiberToThread
CreateFiber
ConvertThreadToFiber
GetQueuedCompletionStatus
CreateFileW
ReadConsoleW
SetStdHandle
FindNextFileW
FindFirstFileExW
FindClose
SetEnvironmentVariableW
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetOEMCP
IsValidCodePage
SetFilePointerEx
GetConsoleMode
GetConsoleCP
FlushFileBuffers
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
HeapQueryInformation
WriteConsoleW
OutputDebugStringA
GetFileType
GetACP
GetCommandLineW
GetCommandLineA
GetStdHandle
RtlPcToFileHeader
EncodePointer
DecodePointer
RaiseException
WideCharToMultiByte
DuplicateHandle
WaitForSingleObjectEx
GetCurrentProcess
GetCurrentThread
GetCurrentThreadId
GetExitCodeThread
GetNativeSystemInfo
MultiByteToWideChar
QueryPerformanceCounter
SetLastError
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
GetProcAddress
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
InitializeSListHead
GetProcessHeap
VirtualQuery
FreeLibrary
CreateTimerQueue
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
RegisterWaitForSingleObject
UnregisterWait
OutputDebugStringW
GetThreadTimes
FreeLibraryAndExitThread
GetModuleFileNameW
GetModuleHandleA
LoadLibraryExW
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
ReleaseSemaphore
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
LoadLibraryW
RtlUnwindEx
GetModuleFileNameA
GetModuleHandleExW
HeapSize
HeapValidate
GetSystemInfo
ExitThread
ExitProcess
ws2_32
listen
htons
bind
WSAIoctl
WSACleanup
WSAStartup
socket
closesocket
WSAGetLastError
advapi32
SystemFunction036
Sections
.text Size: 1.5MB - Virtual size: 1.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 549KB - Virtual size: 548KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 14KB - Virtual size: 27KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 131KB - Virtual size: 130KB
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: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ