Static task
static1
Behavioral task
behavioral1
Sample
2024-04-17_8677b032e1bbde93727974eaeec225fb_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-17_8677b032e1bbde93727974eaeec225fb_ryuk.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-17_8677b032e1bbde93727974eaeec225fb_ryuk
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Size
1.1MB
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MD5
8677b032e1bbde93727974eaeec225fb
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SHA1
56a11537a70733f11fe301f6661c450d0248d8a2
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SHA256
6867f70fa7486261356939ea0ca506f862ed218cd064b979cc7a504338d52a47
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SHA512
fe1cce08ed7df23b066489737a196191fccf16f250e019ac2c5bda0f2c84918849c94f6d47bc4d2761855be9efeeaaf7b133b44028e246187696e78ae94d219b
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SSDEEP
24576:1ukf3Kr3gnB0WCLcL+OQoA4yfcb7/42VEq5QyBd7h:1ukf6rwnBrocLCfg7/ZVEkQQd7h
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-17_8677b032e1bbde93727974eaeec225fb_ryuk
Files
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2024-04-17_8677b032e1bbde93727974eaeec225fb_ryuk.exe windows:5 windows x64 arch:x64
afd81076ed54c9d748db334a9986b90d
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
AcquireSRWLockExclusive
AreFileApisANSI
CloseHandle
CompareStringEx
CompareStringW
CreateDirectoryW
CreateFileA
CreateFileMappingA
CreateFileW
CreateThread
DecodePointer
DeleteCriticalSection
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetEnvironmentStringsW
GetFileAttributesExW
GetFileInformationByHandleEx
GetFileSize
GetFileSizeEx
GetFileType
GetLastError
GetLocaleInfoEx
GetLocaleInfoW
GetModuleFileNameA
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
GetTimeZoneInformation
GetUserDefaultLCID
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MapViewOfFile
MultiByteToWideChar
PeekNamedPipe
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleA
ReadConsoleW
ReadFile
ReleaseSRWLockExclusive
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleCtrlHandler
SetConsoleMode
SetEndOfFile
SetEnvironmentVariableW
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
UnhandledExceptionFilter
UnmapViewOfFile
WaitForSingleObject
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
Sections
.text Size: 749KB - Virtual size: 749KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 335KB - Virtual size: 335KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 10KB - Virtual size: 1.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 25KB - Virtual size: 24KB
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: 11KB - Virtual size: 10KB
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: 500B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 11KB - Virtual size: 11KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ