Static task
static1
Behavioral task
behavioral1
Sample
2024-05-20_1a13c6709d0c2376015e5f329aaf4ad9_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-20_1a13c6709d0c2376015e5f329aaf4ad9_ryuk.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-20_1a13c6709d0c2376015e5f329aaf4ad9_ryuk
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Size
610KB
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MD5
1a13c6709d0c2376015e5f329aaf4ad9
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SHA1
3ccb068df688b585497e6adce035fa7a0bd277f9
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SHA256
792d9d0d7979509642747a18d36bf3b95bf79b5c476eecd78ed5b753b085e336
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SHA512
50400bb84448c990ccb60708df8933e844b09dda8538ed904f43b9e8e73ea9d4ca9ac13bdb8efcc1184f635b57ddc279b1e5a9635eb1d097038533cccf7516bb
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SSDEEP
12288:YtZJpvQiPl5ZbPoDvFGtE3+12TqolnoAgyyRg:qZJpvNPl/bPoDQtE3+cTqUnX
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-20_1a13c6709d0c2376015e5f329aaf4ad9_ryuk
Files
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2024-05-20_1a13c6709d0c2376015e5f329aaf4ad9_ryuk.exe windows:6 windows x64 arch:x64
f2a8cf46b07dd5b79bbd0b9fe3d18701
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
FindFirstFileW
FindNextFileW
GetModuleHandleExW
TerminateProcess
RemoveDirectoryW
GetModuleFileNameW
GetTempPathW
FindClose
WaitForSingleObject
GetFileAttributesW
OpenProcess
MultiByteToWideChar
GetLastError
DeleteFileW
CloseHandle
LoadLibraryW
GetCurrentDirectoryW
GetProcAddress
GetCurrentProcessId
CreateProcessW
FreeLibrary
WideCharToMultiByte
SetDllDirectoryW
GetExitCodeProcess
ReadFile
CancelIo
WriteFile
CreateNamedPipeW
CreateFileW
DisconnectNamedPipe
CreateEventW
GetOverlappedResult
WaitNamedPipeW
ConnectNamedPipe
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
GetCurrentThreadId
DuplicateHandle
WaitForSingleObjectEx
Sleep
GetCurrentProcess
GetCurrentThread
GetExitCodeThread
QueryPerformanceCounter
SetLastError
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetTickCount
GetModuleHandleW
EncodePointer
DecodePointer
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
SetEvent
ResetEvent
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
InitializeSListHead
CreateTimerQueue
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
RegisterWaitForSingleObject
UnregisterWait
GetThreadTimes
FreeLibraryAndExitThread
GetModuleHandleA
LoadLibraryExW
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
ReleaseSemaphore
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
RtlUnwindEx
RtlPcToFileHeader
RaiseException
HeapAlloc
HeapFree
ExitThread
HeapReAlloc
ExitProcess
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
GetFileType
CreateProcessA
GetFileAttributesExW
GetConsoleCP
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetProcessHeap
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
FindFirstFileExW
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetEnvironmentVariableW
SetStdHandle
WriteConsoleW
HeapSize
SetEndOfFile
Sections
.text Size: 368KB - Virtual size: 367KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 157KB - Virtual size: 157KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 11KB - Virtual size: 19KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 22KB - Virtual size: 21KB
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: 42KB - Virtual size: 42KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ