Static task
static1
Behavioral task
behavioral1
Sample
2024-07-07_99ff8553e4696fc7e579a933f9908d08_ryuk.exe
Behavioral task
behavioral2
Sample
2024-07-07_99ff8553e4696fc7e579a933f9908d08_ryuk.exe
General
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Target
2024-07-07_99ff8553e4696fc7e579a933f9908d08_ryuk
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Size
4.0MB
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MD5
99ff8553e4696fc7e579a933f9908d08
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SHA1
638fa08eda65f2d9f526354dba55cc21fe35c934
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SHA256
3190c98d6e9d920810a64b5d17e6a3bc8d4d093e685b93297c97af86e1290fe4
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SHA512
3203a019f4d683f90d43c6a12f7d051a235667248678bcc0ba63549bc40c0d1ef590e6b6d6d92d107decd6ed7ab27a0dd26122c775eca30f1b6605813d8ace1f
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SSDEEP
98304:0W2XcgeiDHGfN72aj1A3tZeym0FvkgytdnKvKz/3esiP:0spsGhA3GEFvotK6/0P
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-07-07_99ff8553e4696fc7e579a933f9908d08_ryuk
Files
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2024-07-07_99ff8553e4696fc7e579a933f9908d08_ryuk.exe windows:5 windows x64 arch:x64
7d8c7e1c8efa556f8f1bc142cef5dae8
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
CreateFileA
CreateFileW
CreatePipe
CreateProcessW
DeleteCriticalSection
DeleteFileW
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FreeEnvironmentStringsW
FreeLibrary
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDriveTypeW
GetEnvironmentStringsW
GetFileAttributesA
GetFileAttributesW
GetFileInformationByHandle
GetFileSize
GetFileType
GetFullPathNameW
GetLastError
GetLocaleInfoW
GetModuleFileNameW
GetModuleHandleExW
GetModuleHandleW
GetOEMCP
GetProcAddress
GetProcessAffinityMask
GetProcessHeap
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDirectoryW
GetSystemTimeAsFileTime
GetTempPathW
GetTickCount
GetTimeZoneInformation
GetUserDefaultLCID
GetVersionExW
GetWindowsDirectoryW
HeapAlloc
HeapCreate
HeapDestroy
HeapFree
HeapReAlloc
HeapSize
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
LCMapStringW
LeaveCriticalSection
LoadLibraryExW
LoadLibraryW
MoveFileW
MultiByteToWideChar
PeekNamedPipe
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReadConsoleW
ReadFile
RegisterWaitForSingleObject
RtlCaptureContext
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwindEx
RtlVirtualUnwind
SetEndOfFile
SetEnvironmentVariableW
SetFileAttributesW
SetFilePointer
SetFilePointerEx
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
Sleep
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
UnregisterWait
VirtualAlloc
VirtualFree
WaitForSingleObject
WideCharToMultiByte
WriteConsoleW
WriteFile
user32
CharUpperW
shell32
ShellExecuteExW
ws2_32
WSACleanup
WSAStartup
__WSAFDIsSet
bind
closesocket
connect
gethostbyname
htons
inet_addr
ioctlsocket
recv
recvfrom
select
send
sendto
socket
winmm
timeBeginPeriod
advapi32
CryptAcquireContextW
CryptGenRandom
CryptReleaseContext
Sections
.text Size: 398KB - Virtual size: 397KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 113KB - Virtual size: 112KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3.4MB - Virtual size: 3.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 17KB - Virtual size: 17KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.code Size: 29KB - Virtual size: 28KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.gxfg Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 512B - Virtual size: 348B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ