Static task
static1
Behavioral task
behavioral1
Sample
2024-04-06_a2d26af14768ea5f825a50a2734c81d3_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-06_a2d26af14768ea5f825a50a2734c81d3_ryuk.exe
Resource
win10v2004-20240226-en
General
-
Target
2024-04-06_a2d26af14768ea5f825a50a2734c81d3_ryuk
-
Size
86KB
-
MD5
a2d26af14768ea5f825a50a2734c81d3
-
SHA1
105a9cf99db0fd5df4045a21f3f1d5b8a7861603
-
SHA256
9d4408a65f5bf381a42742c5b1f431fa0315b756f601cd61769022911cf85144
-
SHA512
36e02b64ce197453eb83667e7edc7c3908c56c31b42af8aceab93be24fb837692015a5bf6b1f0df0b323071150231c5115f6f6a38dda3625dc752bb09c9e6924
-
SSDEEP
1536:AG7MwqqwS26x325YGHXqoaO1w6L7lgP2sW5dc9dlQxC6LuVhV/5J:vowPwP605F3jaO1HJS8U6NuVhV
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-06_a2d26af14768ea5f825a50a2734c81d3_ryuk
Files
-
2024-04-06_a2d26af14768ea5f825a50a2734c81d3_ryuk.exe windows:6 windows x64 arch:x64
7ea1cb7a21985efded7f18759bf13961
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
Process32NextW
LockResource
CreateToolhelp32Snapshot
LoadResource
FindResourceW
VirtualAlloc
SizeofResource
Process32FirstW
GetModuleFileNameA
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
RtlPcToFileHeader
RaiseException
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetStdHandle
WriteFile
GetModuleFileNameW
MultiByteToWideChar
WideCharToMultiByte
GetACP
HeapFree
HeapAlloc
LCMapStringW
CloseHandle
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetStdHandle
GetFileType
GetStringTypeW
GetProcessHeap
HeapSize
HeapReAlloc
FlushFileBuffers
GetConsoleCP
GetConsoleMode
SetFilePointerEx
WriteConsoleW
CreateFileW
advapi32
RegCloseKey
RegSetValueExA
RegCreateKeyA
Sections
.text Size: 40KB - Virtual size: 39KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 35KB - Virtual size: 35KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 512B - Virtual size: 188B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
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