Static task
static1
Behavioral task
behavioral1
Sample
2024-06-25_4d296c3187062d2aed1b883493c748df_ryuk.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-25_4d296c3187062d2aed1b883493c748df_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-25_4d296c3187062d2aed1b883493c748df_ryuk
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Size
7.5MB
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MD5
4d296c3187062d2aed1b883493c748df
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SHA1
56d6fd20420579cced00e104e4e5fc0d0acb166c
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SHA256
a946203a3655933cf9b8fcf6abeffd6566d7c7169790a53b7826515c46b048ed
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SHA512
2815fa0c4d7e941be606380cd54fae4cc603c23057a370a674c7910dd1e18fe22b3ebcb826bf71d36bd798edaf2492644e68e3fb2e5d2d0b0fdffb41d958852d
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SSDEEP
98304:pp49VW4bPJL0IuFLkBPaH3kbdfL59iwsU+/w:ppgxbBIjFL8PaUbdTLh
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-25_4d296c3187062d2aed1b883493c748df_ryuk
Files
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2024-06-25_4d296c3187062d2aed1b883493c748df_ryuk.exe windows:6 windows x64 arch:x64
5540dd89abc017ee0e0f5c78fb5a5180
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
ws2_32
WSAGetLastError
WSACleanup
WSAStartup
socket
send
recv
listen
inet_addr
closesocket
bind
accept
htons
htonl
kernel32
GetTempPathA
GetVersionExA
GetSystemTime
GetTempPathW
UnlockFile
AreFileApisANSI
LockFile
GetFileSize
GetFileAttributesW
GetFileAttributesA
DeleteFileA
LockFileEx
RegisterWaitForSingleObject
FindClose
FindFirstFileW
FindNextFileW
GetDiskFreeSpaceExW
GetFileAttributesExW
GetFullPathNameW
GetVolumePathNameW
RemoveDirectoryW
GetLastError
Sleep
LocalFree
FormatMessageA
GetCurrentProcess
GlobalMemoryStatusEx
K32GetProcessMemoryInfo
GetComputerNameA
GetSystemTimeAsFileTime
GetFileInformationByHandle
SetEndOfFile
SetFilePointer
CreateFileA
GetFileSizeEx
CloseHandle
MapViewOfFile
UnmapViewOfFile
CreateFileMappingA
WideCharToMultiByte
QueryPerformanceCounter
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
GetCurrentThreadId
MultiByteToWideChar
GetStringTypeW
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetTickCount
GetModuleHandleW
GetProcAddress
CompareStringW
LCMapStringW
GetLocaleInfoW
GetCPInfo
SetEvent
ResetEvent
WaitForSingleObjectEx
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
SignalObjectAndWait
SwitchToThread
CreateThread
SetThreadPriority
GetThreadPriority
GetLogicalProcessorInformation
CreateTimerQueueTimer
ChangeTimerQueueTimer
DeleteTimerQueueTimer
GetNumaHighestNodeNumber
GetProcessAffinityMask
SetThreadAffinityMask
UnregisterWait
GetCurrentThread
GetThreadTimes
FreeLibrary
FreeLibraryAndExitThread
GetModuleFileNameW
GetModuleHandleA
LoadLibraryExW
GetVersionExW
VirtualAlloc
VirtualFree
VirtualProtect
DuplicateHandle
ReleaseSemaphore
InterlockedPopEntrySList
InterlockedPushEntrySList
InterlockedFlushSList
QueryDepthSList
UnregisterWaitEx
CreateTimerQueue
LoadLibraryW
RtlPcToFileHeader
RaiseException
RtlUnwindEx
CreateFileW
GetDriveTypeW
GetFileType
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
CreateDirectoryW
DeleteFileW
ReadFile
GetFullPathNameA
SetEnvironmentVariableA
GetCurrentDirectoryW
GetTimeZoneInformation
SetStdHandle
GetConsoleMode
ReadConsoleW
WriteFile
GetConsoleCP
SetFilePointerEx
HeapAlloc
HeapFree
HeapReAlloc
ExitProcess
GetModuleHandleExW
GetModuleFileNameA
GetStdHandle
GetCommandLineA
GetCommandLineW
GetACP
GetDateFormatW
GetTimeFormatW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
WriteConsoleW
GetProcessHeap
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
HeapSize
Sections
.text Size: 5.7MB - Virtual size: 5.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 1.4MB - Virtual size: 1.4MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 64KB - Virtual size: 189KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 262KB - Virtual size: 261KB
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
_RDATA Size: 512B - Virtual size: 32B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 26KB - Virtual size: 25KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ