Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_8fb8efd25f67d35b5459a4d34fd77362_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_8fb8efd25f67d35b5459a4d34fd77362_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-12_8fb8efd25f67d35b5459a4d34fd77362_ryuk
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Size
45.7MB
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MD5
8fb8efd25f67d35b5459a4d34fd77362
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SHA1
8f4214afba9560e931150ffb0f77bf4ec32873ef
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SHA256
b11f806faf78fc857716965af98c834d4964b5e6d7bff0450daa28df45feecbe
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SHA512
1a1d5b4b349b630bf0850e4afd20d52521ab932f586add68a18be1a68408ede6529384db34f7191f51d315323d9ed0a0cd679c2de6330933363c491a573d70b0
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SSDEEP
786432:3tDBWTJWcbzujYkTfJPuMmY2rJxWOdfPSPpU2WvjftzB/v8pZo8DH3SqleK:3vW8ezujY4fJPMY2rrq62Wvj1xvW28z4
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-12_8fb8efd25f67d35b5459a4d34fd77362_ryuk
Files
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2024-02-12_8fb8efd25f67d35b5459a4d34fd77362_ryuk.exe windows:6 windows x64 arch:x64
633d463855a72dc979404a3d1e19767d
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
shell32
SHFileOperationW
SHGetFolderPathW
kernel32
CloseHandle
CreateDirectoryW
CreateFileW
CreateProcessW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FindResourceA
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetExitCodeProcess
GetFileAttributesW
GetFileSizeEx
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetTempPathW
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LoadResource
LockResource
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetEnvironmentVariableA
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
Sections
.text Size: 165KB - Virtual size: 165KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 45KB - Virtual size: 45KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 75KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 512B - Virtual size: 348B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 45.5MB - Virtual size: 45.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ