NvOptimusEnablementCuda
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-13_740d38b028696ca2dfde457d54626f81_ryuk.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-13_740d38b028696ca2dfde457d54626f81_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-13_740d38b028696ca2dfde457d54626f81_ryuk
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Size
7.1MB
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MD5
740d38b028696ca2dfde457d54626f81
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SHA1
5ad5d8469b744763caff3d47b5b9a305a8a9743a
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SHA256
e69542b8f608670828e45862429171770d113b3f64afbf0fa7488d3a6cdcf639
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SHA512
7eed8415500f0c82f93515fd1531917ebb410fab58f64972a2d07307e492864cdaaa556212c0040cd9950ee82b3e6bebb8bbade1b8432813e5ef40c0b71d0c89
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SSDEEP
98304:qyVhL59XTaTcUd90dFj5RGARMRJNR+eb:ThL59XTaTvj0DjfRMRPRT
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-13_740d38b028696ca2dfde457d54626f81_ryuk
Files
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2024-02-13_740d38b028696ca2dfde457d54626f81_ryuk.exe windows:6 windows x64 arch:x64
4711d53cb9d5e20ba6b9c4f8b13dd944
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
GetSystemDirectoryW
HeapSize
FreeLibrary
GetProcAddress
SetEnvironmentVariableA
CloseHandle
GetLastError
QueryPerformanceCounter
HeapCreate
HeapDestroy
HeapAlloc
HeapReAlloc
HeapFree
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
TryEnterCriticalSection
DeleteCriticalSection
SetEvent
ResetEvent
GetCurrentProcess
GetCurrentProcessId
SwitchToThread
GetCurrentThreadId
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetModuleFileNameA
VerSetConditionMask
CreateFileW
GetFileAttributesW
GetFullPathNameW
OutputDebugStringW
SetLastError
SetEndOfFile
GetModuleHandleW
LoadLibraryExW
LocalAlloc
LocalFree
VerifyVersionInfoW
WideCharToMultiByte
MultiByteToWideChar
EncodePointer
DecodePointer
InitializeCriticalSectionAndSpinCount
CreateEventW
GetSystemTimeAsFileTime
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
InitializeSListHead
RtlPcToFileHeader
RaiseException
RtlUnwindEx
ExitProcess
GetModuleHandleExW
GetStdHandle
GetFileType
GetModuleFileNameW
WriteConsoleW
SetStdHandle
ReadFile
CreateThread
WriteFile
GetCommandLineA
GetCommandLineW
GetACP
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
GetConsoleCP
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetProcessHeap
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
Exports
Exports
Sections
.text Size: 381KB - Virtual size: 380KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 172KB - Virtual size: 171KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 5KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.nv_fatb Size: 6.5MB - Virtual size: 6.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.nvFatBi Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.gfids Size: 512B - Virtual size: 392B
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: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ