Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_5fb305a5aa1887cbb88f38a80ffe57a5_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-25_5fb305a5aa1887cbb88f38a80ffe57a5_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-25_5fb305a5aa1887cbb88f38a80ffe57a5_ryuk
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Size
1.6MB
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MD5
5fb305a5aa1887cbb88f38a80ffe57a5
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SHA1
602c2548b9196ca14a4672ec569f8e35133c923e
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SHA256
a2289bf5c3be42884a90779e7dcf72fb195b800c4b0d99c21327d4843ae55daa
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SHA512
a22bc2665b779049067400de4b3f0774ad83cbfacfe2fe0f8f00cedd83e5399d40c8bad657b88c2e8f93a28286ea702f38c8e2491536410186d139d88cafaa11
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SSDEEP
49152:bBb43mBfMQZTO+h5VgFDeWjjU61+nv27TUOJ:9NZ7Ij5
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-01-25_5fb305a5aa1887cbb88f38a80ffe57a5_ryuk
Files
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2024-01-25_5fb305a5aa1887cbb88f38a80ffe57a5_ryuk.exe windows:6 windows x64 arch:x64
5e6f044fd5b87557c1ca1f49daab3d58
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
FindClose
GetLastError
SetLastError
MultiByteToWideChar
WideCharToMultiByte
FormatMessageW
RtlPcToFileHeader
EncodePointer
DecodePointer
RaiseException
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
GetCurrentThreadId
GetStringTypeW
QueryPerformanceCounter
InitializeCriticalSectionAndSpinCount
CreateEventW
Sleep
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetTickCount
GetModuleHandleW
GetProcAddress
CompareStringW
LCMapStringW
GetLocaleInfoW
GetCPInfo
CloseHandle
SetEvent
ResetEvent
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
InitializeSListHead
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
RegisterWaitForSingleObject
UnregisterWait
GetCurrentThread
GetThreadTimes
FreeLibrary
FreeLibraryAndExitThread
GetModuleFileNameW
GetModuleHandleA
LoadLibraryExW
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
DuplicateHandle
ReleaseSemaphore
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
CreateTimerQueue
LoadLibraryW
RtlUnwindEx
SetEnvironmentVariableA
CreateFileW
GetFileType
ReadFile
GetConsoleMode
ReadConsoleW
WriteFile
GetConsoleCP
HeapAlloc
HeapFree
HeapReAlloc
ExitProcess
GetModuleHandleExW
GetModuleFileNameA
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
SetStdHandle
SetFilePointerEx
GetProcessHeap
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
WriteConsoleW
HeapSize
Sections
.text Size: 1.1MB - Virtual size: 1.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 375KB - Virtual size: 374KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 21KB - Virtual size: 30KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 70KB - Virtual size: 70KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.tls Size: 512B - Virtual size: 37B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 3KB - Virtual size: 2KB
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