Static task
static1
Behavioral task
behavioral1
Sample
2024-12-28_c7e3af8640a875bfca96e6f8059e7246_ryuk.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-12-28_c7e3af8640a875bfca96e6f8059e7246_ryuk.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-28_c7e3af8640a875bfca96e6f8059e7246_ryuk
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Size
1.7MB
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MD5
c7e3af8640a875bfca96e6f8059e7246
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SHA1
c770b5bfea1014a7d05f3dd204009598859b5c6d
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SHA256
4f7309e61135f65171ee3377d9503a4139b3315d2e68424dced864051cafba2e
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SHA512
1073dab4115aa786f7fa0dc94b8936a726eeb99d6f3231fe4de2d3be80868fac0ade0c39c3bd3eeeccb3bd4bae0ecd9acd0967bfa4de8d606b9900c725b985c7
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SSDEEP
24576:g6+UJfQ3VSYnQJRXvKxZF5hI+ro3xXPyjlbsqJBaS28b:PBQ3VSYCRXvKxZ5X03xXPcF9Ftb
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-12-28_c7e3af8640a875bfca96e6f8059e7246_ryuk
Files
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2024-12-28_c7e3af8640a875bfca96e6f8059e7246_ryuk.exe windows:4 windows x64 arch:x64
1ba153197c0b281ee0376b49531de672
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
AcquireSRWLockExclusive
CloseHandle
CompareStringEx
CompareStringW
CreateFileW
CreateThread
DecodePointer
DeleteCriticalSection
DisableThreadLibraryCalls
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetEnvironmentStringsW
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetTempPathW
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
InterlockedFlushSList
InterlockedPushEntrySList
IsDebuggerPresent
IsProcessorFeaturePresent
IsThreadAFiber
IsValidCodePage
IsValidLocale
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MultiByteToWideChar
OutputDebugStringW
QueryPerformanceCounter
RaiseException
ReadConsoleW
ReadFile
ReleaseSRWLockExclusive
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetEnvironmentVariableW
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
SleepConditionVariableSRW
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualProtect
WakeAllConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
rpcrt4
NdrClientCall3
RpcBindingFromStringBindingW
RpcStringBindingComposeW
RpcStringFreeW
Sections
.text Size: 1010KB - Virtual size: 1009KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 497KB - Virtual size: 497KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 134KB - Virtual size: 142KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 43KB - Virtual size: 43KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.fptable Size: 512B - Virtual size: 256B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 9B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_guard_c Size: 512B - Virtual size: 36B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_guard_d Size: 512B - Virtual size: 36B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
memcpy_ Size: 512B - Virtual size: 264B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 472B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 18KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ