Static task
static1
Behavioral task
behavioral1
Sample
2024-04-18_189f2d5fb20c6af3c64fefdce800c8f1_ryuk.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-18_189f2d5fb20c6af3c64fefdce800c8f1_ryuk.exe
Resource
win10v2004-20240412-en
General
-
Target
2024-04-18_189f2d5fb20c6af3c64fefdce800c8f1_ryuk
-
Size
3.8MB
-
MD5
189f2d5fb20c6af3c64fefdce800c8f1
-
SHA1
36167bbcf13eb06b4bde4144c561177bca585827
-
SHA256
d975461091ed363d2efa813380c2e60200bd395841de98096016b9617c2d1128
-
SHA512
77de91b25ff1cb91ea5be602f0dd36112c9fb34978e24ec6302a8c8bdad1316f2d21040c553ba52956fcb9d528f277ca2dff61149f8a09d6c3c5c5a2c06f4718
-
SSDEEP
24576:R3rQiCLkfvw4iEuWwUWOtZBT6KyHYiWr2tFaVWFDYAfMG+5VWUkDQgqLSQixlo2B:qPkfftCKyHWjqRlHr
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-04-18_189f2d5fb20c6af3c64fefdce800c8f1_ryuk
Files
-
2024-04-18_189f2d5fb20c6af3c64fefdce800c8f1_ryuk.exe windows:6 windows x64 arch:x64
90ee0b76196e753eb66495a4b54ee7f7
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
SleepConditionVariableCS
EnterCriticalSection
WakeAllConditionVariable
LeaveCriticalSection
InitializeCriticalSection
InitializeConditionVariable
DeleteCriticalSection
GetCommandLineW
SetConsoleTitleA
GetConsoleTitleA
LocalFree
WideCharToMultiByte
CreateFileW
SetStdHandle
GetStdHandle
MultiByteToWideChar
GetConsoleMode
WriteConsoleW
WaitForSingleObject
CloseHandle
CreateThread
LoadLibraryA
GetProcAddress
Sleep
SetEvent
CreateEventA
GetNumaHighestNodeNumber
SetThreadPriority
GetCurrentThread
SetThreadGroupAffinity
GetNumaNodeProcessorMaskEx
EncodePointer
DecodePointer
SetLastError
InitializeCriticalSectionAndSpinCount
CreateEventW
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetSystemTimeAsFileTime
GetModuleHandleW
CompareStringW
LCMapStringW
GetLocaleInfoW
GetStringTypeW
GetCPInfo
ResetEvent
WaitForSingleObjectEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
InitializeSListHead
GetCurrentProcess
TerminateProcess
RtlPcToFileHeader
RaiseException
RtlUnwindEx
GetLastError
FreeLibrary
LoadLibraryExW
DuplicateHandle
CreateProcessA
ExitProcess
GetModuleHandleExW
ReadFile
SetConsoleCtrlHandler
GetTimeZoneInformation
MoveFileExW
DeleteFileW
HeapAlloc
HeapReAlloc
HeapFree
GetModuleFileNameA
WriteFile
GetCommandLineA
GetACP
GetExitCodeProcess
GetFileAttributesExW
CreatePipe
GetFileType
GetConsoleCP
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
SetFilePointerEx
ReadConsoleW
FlushFileBuffers
HeapSize
GetProcessHeap
FindClose
FindFirstFileExA
FindNextFileA
IsValidCodePage
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetEndOfFile
shell32
CommandLineToArgvW
Sections
.text Size: 3.5MB - Virtual size: 3.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 201KB - Virtual size: 201KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 7KB - Virtual size: 32KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 34KB - Virtual size: 34KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rodata Size: 15KB - Virtual size: 14KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gfids Size: 1024B - Virtual size: 772B
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
.rsrc Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 5KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ