Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_4f053403f3eab1cb12f802908413efac_ryuk.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_4f053403f3eab1cb12f802908413efac_ryuk.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_4f053403f3eab1cb12f802908413efac_ryuk
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Size
5.0MB
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MD5
4f053403f3eab1cb12f802908413efac
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SHA1
29bd19976cc23d2de7906a9688b9fd73ba4ca82f
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SHA256
0dd51fe845bc5ee761f1176159800a131b164b65649ce87d7b758f5a269b86c4
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SHA512
69df826cffe4703ea610297f0e024f1eb421f5670ecf05b7c6634fad77683e5054eabcf1e547f14393d9f9013448689d6773456ee74f421c343092cb87db72f7
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SSDEEP
49152:mbg9Cj+m73ZSN4qZWXcyRjqMDJOo1TgtczFBQ/IZ0SPzCL8ufe+teyW/DmtiKPjX:iSeJjtRB/ZfXu2yjpiTLWDT
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-02-19_4f053403f3eab1cb12f802908413efac_ryuk
Files
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2024-02-19_4f053403f3eab1cb12f802908413efac_ryuk.exe windows:6 windows x64 arch:x64
c294e4bd969f64b763fabb80c57735ed
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
CloseHandle
CompareStringW
CreateDirectoryW
CreateEventW
CreateFileMappingW
CreateFileW
CreatePipe
CreateProcessA
CreateProcessW
CreateThread
DeleteCriticalSection
DeleteFileW
DuplicateHandle
EncodePointer
EnterCriticalSection
ExitProcess
ExitThread
ExpandEnvironmentStringsW
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleCP
GetConsoleMode
GetConsoleOutputCP
GetConsoleScreenBufferInfo
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableA
GetExitCodeProcess
GetExitCodeThread
GetFileAttributesExW
GetFileAttributesW
GetFileInformationByHandle
GetFileSize
GetFileSizeEx
GetFileType
GetFullPathNameW
GetLastError
GetModuleFileNameA
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemInfo
GetSystemTime
GetSystemTimeAsFileTime
GetThreadContext
GetTimeZoneInformation
GlobalMemoryStatusEx
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
LCMapStringW
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
LoadLibraryW
LocalFree
MapViewOfFile
MoveFileExW
MultiByteToWideChar
OpenThread
PeekNamedPipe
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleW
ReadFile
ResumeThread
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetConsoleTextAttribute
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFilePointerEx
SetFileTime
SetHandleInformation
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
SuspendThread
SwitchToThread
SystemTimeToFileTime
SystemTimeToTzSpecificLocalTime
TerminateProcess
TerminateThread
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
UnmapViewOfFile
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualFree
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
shell32
CommandLineToArgvW
ShellExecuteA
ole32
CoCreateInstance
CoInitialize
CoUninitialize
oleaut32
SysFreeString
SysStringLen
advapi32
RegCloseKey
RegOpenKeyExA
RegQueryValueExW
Sections
.text Size: 3.9MB - Virtual size: 3.9MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 829KB - Virtual size: 828KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 177KB - Virtual size: 203KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 61KB - Virtual size: 60KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 16B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.minfo Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: 512B - Virtual size: 361B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 95KB - Virtual size: 95KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ