nacl64.exe.pdb
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-14_ff2f5df5c1a0b246adb122376b703ef6_ryuk.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-14_ff2f5df5c1a0b246adb122376b703ef6_ryuk.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-14_ff2f5df5c1a0b246adb122376b703ef6_ryuk
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Size
3.6MB
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MD5
ff2f5df5c1a0b246adb122376b703ef6
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SHA1
9081dcb659cccfcb56b2969d64ef358823c01508
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SHA256
933a0eb950a6ad86e487eed368a2bfb5f37d99f68eb5c9666fe56d4a5f1e82e3
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SHA512
6380321e82a496bce4d02e8174ed7b6d4a5d0e182b2c8d722df442f717bce26790b5e3f60e3bfd75c1b6d5bbf24e2cf0f65162a3325d8eb6b25fc3d10590c49d
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SSDEEP
49152:eroTODPFGZKHg72CRWK5qZQGl7EEHa3MoCV0DksM:UzXnVk
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource 2024-05-14_ff2f5df5c1a0b246adb122376b703ef6_ryuk
Files
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2024-05-14_ff2f5df5c1a0b246adb122376b703ef6_ryuk.exe windows:5 windows x64 arch:x64
c5477a4300129c7acc60633f26b4a083
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
PDB Paths
Imports
advapi32
AccessCheck
AddMandatoryAce
AdjustTokenPrivileges
BuildTrusteeWithSidW
ConvertSidToStringSidW
ConvertStringSecurityDescriptorToSecurityDescriptorW
ConvertStringSidToSidW
CreateProcessAsUserW
CreateRestrictedToken
CreateWellKnownSid
DuplicateToken
DuplicateTokenEx
EqualSid
EventRegister
EventUnregister
EventWrite
FreeSid
GetAce
GetKernelObjectSecurity
GetLengthSid
GetNamedSecurityInfoW
GetSecurityDescriptorDacl
GetSecurityDescriptorSacl
GetSecurityInfo
GetSidSubAuthority
GetTokenInformation
ImpersonateLoggedOnUser
InitializeAcl
InitializeSecurityDescriptor
InitializeSid
IsValidSid
LookupPrivilegeValueW
MapGenericMask
OpenProcessToken
RegCloseKey
RegCreateKeyExW
RegDisablePredefinedCache
RegOpenKeyExW
RegQueryValueExW
RevertToSelf
SetEntriesInAclW
SetKernelObjectSecurity
SetSecurityDescriptorDacl
SetSecurityInfo
SetThreadToken
SetTokenInformation
SystemFunction036
dbghelp
SymCleanup
SymFromAddr
SymGetLineFromAddr64
SymGetSearchPathW
SymInitialize
SymSetOptions
SymSetSearchPathW
user32
AllowSetForegroundWindow
CloseDesktop
CloseWindowStation
CreateDesktopW
CreateWindowExW
CreateWindowStationW
DefWindowProcW
DestroyWindow
DispatchMessageW
GetActiveWindow
GetProcessWindowStation
GetQueueStatus
GetSystemMetrics
GetThreadDesktop
GetUserObjectInformationW
GetWindowLongPtrW
KillTimer
MessageBoxW
MsgWaitForMultipleObjectsEx
PeekMessageW
PostMessageW
PostQuitMessage
RegisterClassExW
SetProcessWindowStation
SetTimer
SetWindowLongPtrW
TranslateMessage
UnregisterClassW
wsprintfW
winmm
timeBeginPeriod
timeEndPeriod
timeGetDevCaps
timeGetTime
ws2_32
WSACleanup
WSACloseEvent
WSACreateEvent
WSADuplicateSocketW
WSAEventSelect
WSAGetLastError
WSASetLastError
WSASocketW
WSAStartup
accept
bind
closesocket
gethostbyname
getsockname
htonl
htons
listen
ntohs
recv
select
send
setsockopt
shutdown
socket
kernel32
AcquireSRWLockExclusive
AllocConsole
AssignProcessToJobObject
AttachConsole
CancelIo
CloseHandle
CompareStringW
ConnectNamedPipe
ContinueDebugEvent
CreateDirectoryW
CreateEventW
CreateFileA
CreateFileMappingW
CreateFileW
CreateIoCompletionPort
CreateJobObjectW
CreateMutexW
CreateNamedPipeW
CreateProcessW
CreateRemoteThread
CreateSemaphoreW
CreateThread
DebugActiveProcess
DebugBreak
DeleteCriticalSection
DeleteFileW
DeleteProcThreadAttributeList
DisconnectNamedPipe
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesEx
EnumSystemLocalesW
ExitProcess
ExitThread
ExpandEnvironmentStringsW
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FlsAlloc
FlsFree
FlsGetValue
FlsSetValue
FlushFileBuffers
FlushInstructionCache
FormatMessageA
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetComputerNameExW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentProcessorNumber
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableW
GetExitCodeProcess
GetFileAttributesExW
GetFileAttributesW
GetFileInformationByHandle
GetFileSizeEx
GetFileType
GetFullPathNameW
GetLastError
GetLocalTime
GetLocaleInfoW
GetLogicalProcessorInformation
GetLongPathNameW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExA
GetModuleHandleExW
GetModuleHandleW
GetNamedPipeHandleStateW
GetNativeSystemInfo
GetOEMCP
GetProcAddress
GetProcessHandleCount
GetProcessHeap
GetProcessHeaps
GetProcessId
GetProcessTimes
GetProductInfo
GetQueuedCompletionStatus
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDirectoryW
GetSystemInfo
GetSystemPowerStatus
GetSystemTime
GetSystemTimeAsFileTime
GetTempPathW
GetThreadContext
GetThreadId
GetThreadPriority
GetThreadTimes
GetTickCount
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
GetUserDefaultLangID
GetUserDefaultLocaleName
GetVersionExW
GetWindowsDirectoryW
GlobalMemoryStatusEx
HeapDestroy
HeapSetInformation
InitOnceExecuteOnce
InitializeConditionVariable
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeProcThreadAttributeList
InitializeSListHead
IsDebuggerPresent
IsProcessInJob
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
IsWow64Process
K32QueryWorkingSetEx
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
LocalFree
LockFileEx
MapViewOfFile
MapViewOfFileEx
MoveFileExW
MultiByteToWideChar
OpenProcess
OutputDebugStringA
OutputDebugStringW
PeekNamedPipe
PostQueuedCompletionStatus
QueryDosDeviceW
QueryInformationJobObject
QueryPerformanceCounter
QueryPerformanceFrequency
QueryThreadCycleTime
RaiseException
ReadConsoleW
ReadFile
ReadProcessMemory
RegisterWaitForSingleObject
ReleaseSRWLockExclusive
ReleaseSemaphore
RemoveDirectoryW
ResetEvent
ResumeThread
RtlCaptureContext
RtlCaptureStackBackTrace
RtlLookupFunctionEntry
RtlPcToFileHeader
RtlUnwind
RtlUnwindEx
RtlVirtualUnwind
SetCurrentDirectoryW
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFileAttributesW
SetFilePointerEx
SetFileTime
SetHandleInformation
SetInformationJobObject
SetLastError
SetNamedPipeHandleState
SetStdHandle
SetThreadAffinityMask
SetThreadContext
SetThreadPriority
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
SuspendThread
SwitchToThread
SystemTimeToFileTime
SystemTimeToTzSpecificLocalTime
TerminateJobObject
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TransactNamedPipe
TryAcquireSRWLockExclusive
TzSpecificLocalTimeToSystemTime
UnhandledExceptionFilter
UnlockFileEx
UnmapViewOfFile
UnregisterWait
UnregisterWaitEx
UpdateProcThreadAttribute
VerSetConditionMask
VerifyVersionInfoW
VirtualAlloc
VirtualAllocEx
VirtualFree
VirtualFreeEx
VirtualProtect
VirtualProtectEx
VirtualQuery
VirtualQueryEx
WaitForDebugEvent
WaitForMultipleObjects
WaitForSingleObject
WaitForSingleObjectEx
WaitNamedPipeW
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
WriteProcessMemory
lstrcmpiA
lstrlenW
shell32
CommandLineToArgvW
SHGetFolderPathW
SHGetKnownFolderPath
ShellExecuteExW
userenv
CreateEnvironmentBlock
DestroyEnvironmentBlock
GetProfileType
version
GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW
ole32
CoInitializeEx
CoRegisterInitializeSpy
CoRevokeInitializeSpy
CoTaskMemFree
CoUninitialize
Exports
Exports
ClearBreakpadPipeEnvironmentVariable
CrashForException
DumpProcess
DumpProcessWithoutCrash
GetHandleVerifier
GetMainTargetServices
InjectDumpForHungInput
IsSandboxedProcess
TerminateProcessWithoutDump
_ovly_debug_event
nacl_global_xlate_base
nacl_thread_ids
nacl_user
Sections
.text Size: 2.0MB - Virtual size: 2.0MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 1.4MB - Virtual size: 1.4MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 41KB - Virtual size: 218KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 81KB - Virtual size: 80KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.00cfg Size: 512B - Virtual size: 40B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.gxfg Size: 13KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.retplne Size: 512B - Virtual size: 128B
.tls Size: 512B - Virtual size: 321B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.voltbl Size: 512B - Virtual size: 70B
CPADinfo Size: 512B - Virtual size: 56B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
_RDATA Size: 512B - Virtual size: 244B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
malloc_h Size: 512B - Virtual size: 326B
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 60KB - Virtual size: 60KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 10KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ