Static task
static1
Behavioral task
behavioral1
Sample
2024-02-03_f087d1c21684d63613cca090e5c4bea0_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-03_f087d1c21684d63613cca090e5c4bea0_ryuk.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-03_f087d1c21684d63613cca090e5c4bea0_ryuk
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Size
128KB
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MD5
f087d1c21684d63613cca090e5c4bea0
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SHA1
dc9781e219133d9fc784a6ae0e0b68076fdba913
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SHA256
d00bcbd159df41ae095f5727becc6cec9d1d5f8c0377d5511f7be51f9e23fedf
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SHA512
5e096541a07717ff909c4db28ff26a97bd75e2427d78c8152cae3c8861f8313ae2053e78ea1ed3695ef599977741fa4c00ac5ab4803a95bfb0daa870e64bf0f9
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SSDEEP
3072:fzO/HyqzpZjyGCBhraYYFxFfRz/iLQ1iVM0tGQ:6rzp9sVatFx/uz+Q
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-03_f087d1c21684d63613cca090e5c4bea0_ryuk
Files
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2024-02-03_f087d1c21684d63613cca090e5c4bea0_ryuk.exe windows:5 windows x64 arch:x64
8f60d42431535e14c40bea14ef8510e2
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
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetStdHandle
WriteFile
GetModuleFileNameW
GetCommandLineA
GetCommandLineW
HeapFree
HeapAlloc
CompareStringW
LCMapStringW
GetFileType
CloseHandle
FlushFileBuffers
GetConsoleCP
GetConsoleMode
GetFileSizeEx
SetFilePointerEx
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
GetStringTypeW
GetProcessHeap
ReadFile
ReadConsoleW
CreateFileW
HeapSize
HeapReAlloc
WriteConsoleW
SetEndOfFile
RaiseException
Sections
.text Size: 78KB - Virtual size: 77KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 39KB - Virtual size: 38KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 164B
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