Static task
static1
Behavioral task
behavioral1
Sample
2024-04-24_3343a3cf5f55fd0baff7d7fe4760eef5_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-24_3343a3cf5f55fd0baff7d7fe4760eef5_ryuk.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-24_3343a3cf5f55fd0baff7d7fe4760eef5_ryuk
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Size
3.0MB
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MD5
3343a3cf5f55fd0baff7d7fe4760eef5
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SHA1
711549d2c831a896391f61d3ce6546420c7f4be8
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SHA256
652a3d001868bc117f6aace834f727e39a95af922d1426be52416a157ea31205
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SHA512
c7aec7945a104c98366a500dd5ba8d968ac9369ea532379b21619819fee21983693b2ab9658de02a4b3da6978072bb529a72a0014d635954c0b66b8f8ec34e1c
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SSDEEP
49152:0ydqScUowwqbrWn7ytY/puOm/PGEQuigv3CiTRsxeUfZ4VxxniAUFT:UVIY/kBPGRQRsPfAniAU
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-24_3343a3cf5f55fd0baff7d7fe4760eef5_ryuk
Files
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2024-04-24_3343a3cf5f55fd0baff7d7fe4760eef5_ryuk.exe windows:6 windows x64 arch:x64
63876a59c7d5eda234e36bbacdf0aaa5
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
SetEvent
ResetEvent
WaitForSingleObject
CreateEventA
GetSystemTimeAsFileTime
CreateMutexW
ReleaseMutex
CreateEventW
SleepEx
CancelIo
GetCurrentProcess
WaitForMultipleObjects
DuplicateHandle
GetLastError
ReadFile
VerifyVersionInfoA
ReleaseSemaphore
WriteFile
DeviceIoControl
CreateFileA
GetVersionExA
GetOverlappedResult
VerSetConditionMask
GetCurrentProcessId
FreeLibrary
CreateSemaphoreA
SetThreadAffinityMask
GetProcessAffinityMask
TerminateThread
FormatMessageA
WideCharToMultiByte
WaitForSingleObjectEx
GetCurrentThread
GetExitCodeThread
MultiByteToWideChar
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
InitializeSListHead
OutputDebugStringW
GetThreadTimes
GetTickCount
GetModuleFileNameW
LoadLibraryExW
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
RegisterWaitForSingleObject
LoadLibraryW
CreateTimerQueue
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
UnregisterWait
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
RtlPcToFileHeader
RtlUnwindEx
CreateFileW
GetDriveTypeW
GetFileType
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
ExitThread
ResumeThread
GetModuleHandleExW
SetFilePointerEx
GetStdHandle
GetModuleFileNameA
WriteConsoleW
HeapAlloc
HeapFree
HeapReAlloc
ExitProcess
GetCommandLineA
GetCommandLineW
GetACP
GetConsoleCP
GetConsoleMode
ReadConsoleW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
GetCurrentDirectoryW
GetFullPathNameW
SetStdHandle
SetEndOfFile
GetProcessHeap
GetTimeZoneInformation
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
HeapSize
LoadLibraryA
GetProcAddress
GetModuleHandleA
GetTempFileNameA
GetTempPathA
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
DeleteCriticalSection
TryEnterCriticalSection
LeaveCriticalSection
EnterCriticalSection
InitializeCriticalSection
QueryPerformanceFrequency
QueryPerformanceCounter
DeleteFileA
GetTempPathW
DeleteFileW
GetCurrentThreadId
Sleep
FreeLibraryAndExitThread
RaiseException
msvfw32
ICClose
ICSendMessage
ICDecompress
ICOpen
avifil32
AVIFileGetStream
AVIStreamRelease
AVIStreamInfoA
AVIStreamGetFrameOpen
AVIStreamGetFrame
AVIStreamGetFrameClose
AVIFileOpenA
AVIFileRelease
AVIFileInit
avicap32
capGetDriverDescriptionA
capCreateCaptureWindowA
user32
GetClassLongPtrA
LoadCursorA
LoadIconA
MonitorFromRect
GetMonitorInfoA
IsWindow
DestroyWindow
InvalidateRect
EndPaint
BeginPaint
ReleaseDC
GetDC
SetWindowLongPtrA
SetCapture
GetKeyState
SetFocus
EmptyClipboard
SetClipboardData
CloseClipboard
OpenClipboard
SetWindowPos
MoveWindow
ShowWindow
CreateWindowExA
UnregisterClassA
GetWindowLongPtrA
OffsetRect
SubtractRect
ScreenToClient
SetCursor
GetMessageA
GetWindowRect
GetClientRect
GetWindowTextA
ReleaseCapture
RegisterClassA
DefWindowProcA
SendMessageA
PeekMessageA
DispatchMessageA
TranslateMessage
gdi32
GetStockObject
SelectObject
StretchBlt
SetStretchBltMode
GetCurrentObject
SetDIBColorTable
GetObjectA
GdiFlush
CreateDIBSection
FillRgn
DeleteObject
DeleteDC
CreateRectRgn
CreateCompatibleDC
CreateCompatibleBitmap
BitBlt
CombineRgn
ole32
CoTaskMemFree
CoCreateInstance
CoInitialize
CoUninitialize
oleaut32
OleCreatePropertyFrame
VariantClear
VariantInit
comdlg32
GetSaveFileNameA
advapi32
RegQueryValueExA
RegOpenKeyExA
RegEnumKeyExA
RegDeleteKeyA
RegCreateKeyExA
RegCloseKey
RegSetValueExA
Sections
.text Size: 2.0MB - Virtual size: 2.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 889KB - Virtual size: 888KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 34KB - Virtual size: 693KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 95KB - Virtual size: 94KB
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: 10KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ