Static task
static1
Behavioral task
behavioral1
Sample
2024-06-09_e8ef3a21d3af07dde2e123e78668c0f4_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-09_e8ef3a21d3af07dde2e123e78668c0f4_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-09_e8ef3a21d3af07dde2e123e78668c0f4_ryuk
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Size
1.2MB
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MD5
e8ef3a21d3af07dde2e123e78668c0f4
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SHA1
7f4daf2ca17a91a27c54bfa54d9028dac111e66a
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SHA256
9ca7e5ffb12bc5dab91625dd3ac9b30bfd968d7e688a3245806f8c54cfaade04
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SHA512
31b5f587491f8041ac7ea2f243aa94a64d9f8bdc054de91df2e8407ee382e88ae99461c97b0dab911c12d55fa3f5d06570b5bebd1f0f27053041f061d7192ec7
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SSDEEP
24576:b9HMHw79kfgOihSqaoWvVehq5w+mELXfrU:b9SUknihSqIvCq5w+mELXfrU
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-06-09_e8ef3a21d3af07dde2e123e78668c0f4_ryuk
Files
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2024-06-09_e8ef3a21d3af07dde2e123e78668c0f4_ryuk.exe windows:6 windows x64 arch:x64
000b22395534ad434ad1cff65cae82e8
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
AddVectoredExceptionHandler
CloseHandle
CreateFileW
DeleteCriticalSection
EncodePointer
EnterCriticalSection
ExitProcess
FindClose
FindFirstFileExW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThreadId
GetEnvironmentStringsW
GetFileType
GetLastError
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
MultiByteToWideChar
QueryPerformanceCounter
RaiseException
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualAlloc
WideCharToMultiByte
WriteConsoleW
WriteFile
user32
MessageBoxW
winhttp
WinHttpCloseHandle
WinHttpConnect
WinHttpCrackUrl
WinHttpOpen
WinHttpOpenRequest
WinHttpQueryHeaders
WinHttpReadData
WinHttpReceiveResponse
WinHttpSendRequest
ntdll
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
Sections
.text Size: 674KB - Virtual size: 674KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 38KB - Virtual size: 37KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 336KB - Virtual size: 340KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 140B
.voltbl Size: 512B - Virtual size: 48B
_RDATA Size: 512B - Virtual size: 244B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 92KB - Virtual size: 92KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 86KB - Virtual size: 85KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ