2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk

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General

Target
2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk
Size 3.2MB
Sample240403-lq333sbf71
SHA256 5b10c831aeb9b4bad3abec945de5f794154c5b00fbddfab1c5714962a89bf054
MD5 030a82aef3365d5f1672198ed7702341
SHA1 8cdb63ab7a6f7ab045cdc316ce911c86e286c797
SHA512 b85251b2528927d74e8e5a5d46f1e1d86efb6407c1be375ff740b0ae9869eccd12c493d9fe50977c447655bc023133e6f553f605970b59a4af5df8d17b77db37
SSDEEP 49152:s5k1YCdptya507NUUWn043oHS3fTGYwVq1/xT3DDbw0TUqyFDmg27RnWGj:iNhSqYw8y9D527BWG
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk

File Explorer

2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk

.exe 3.2MB

2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk

IMPHASH acd34b280c2d8b2a020a1867e9237c73
SHA256 5b10c831aeb9b4bad3abec945de5f794154c5b00fbddfab1c5714962a89bf054
MD5 030a82aef3365d5f1672198ed7702341
SHA1 8cdb63ab7a6f7ab045cdc316ce911c86e286c797
SHA512 b85251b2528927d74e8e5a5d46f1e1d86efb6407c1be375ff740b0ae9869eccd12c493d9fe50977c447655bc023133e6f553f605970b59a4af5df8d17b77db37
SSDEEP 49152:s5k1YCdptya507NUUWn043oHS3fTGYwVq1/xT3DDbw0TUqyFDmg27RnWGj:iNhSqYw8y9D527BWG
MD5 SHA1 SHA512 SSDEEP

windows:5 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

1124528

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

setup.exe.pdb

advapi32

AdjustTokenPrivileges BuildExplicitAccessWithNameW BuildSecurityDescriptorW BuildTrusteeWithSidW ChangeServiceConfigW CloseServiceHandle ConvertSidToStringSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW CreateProcessAsUserW CreateServiceW CreateWellKnownSid DeleteService EventRegister EventUnregister EventWrite GetLengthSid GetNamedSecurityInfoW GetSidSubAuthority GetSidSubAuthorityCount GetTokenInformation GetTraceEnableFlags GetTraceEnableLevel GetTraceLoggerHandle GetUserNameW ImpersonateNamedPipeClient InitializeSid IsValidSid LookupPrivilegeValueW OpenProcessToken OpenSCManagerW OpenServiceW QueryServiceConfigW RegCloseKey RegCreateKeyExW RegDeleteKeyExW RegDeleteValueW RegEnumKeyExW RegEnumValueA RegEnumValueW RegLoadKeyW RegOpenKeyExW RegQueryInfoKeyW RegQueryValueExW RegSetValueExW RegUnLoadKeyW RegisterTraceGuidsW RevertToSelf SetEntriesInAclW SetNamedSecurityInfoW SystemFunction036 TraceEvent UnregisterTraceGuids

dbghelp

SymCleanup SymFromAddr SymGetLineFromAddr64 SymGetSearchPathW SymInitialize SymSetOptions SymSetSearchPathW

shell32

CommandLineToArgvW ord680 SHChangeNotify SHGetFolderPathW SHGetKnownFolderPath SHOpenWithDialog SHQueryUserNotificationState ShellExecuteExW ShellExecuteW

user32

AllowSetForegroundWindow CallNextHookEx CharUpperW CreateWindowExW DefWindowProcW DestroyWindow DispatchMessageW EqualRect GetForegroundWindow GetMessageW GetMonitorInfoW GetSystemMetrics GetWindowLongPtrW GetWindowLongW GetWindowRect GetWindowThreadProcessId IntersectRect LoadIconW MessageBoxW MonitorFromRect MonitorFromWindow MoveWindow PostMessageW RegisterClassW SendMessageW SetForegroundWindow SetWindowLongPtrW SetWindowsHookExW TranslateMessage UnhookWindowsHookEx UnregisterClassW

ws2_32

ntohl

kernel32

AcquireSRWLockExclusive AssignProcessToJobObject AttachConsole CloseHandle CompareStringW ConnectNamedPipe CopyFileW CreateDirectoryW CreateEventW CreateFileMappingW CreateFileW CreateIoCompletionPort CreateMutexW CreateNamedPipeW CreateProcessW CreateSemaphoreW CreateThread CreateToolhelp32Snapshot DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DisconnectNamedPipe DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExitThread ExpandEnvironmentStringsW FileTimeToSystemTime FindClose FindFirstFileExW FindNextFileW FindResourceW FlsAlloc FlsSetValue FlushFileBuffers FlushViewOfFile FormatMessageA FreeConsole FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleDisplayMode GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesExW GetFileAttributesW GetFileInformationByHandle GetFileInformationByHandleEx GetFileSizeEx GetFileTime GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetPriorityClass GetProcAddress GetProcessHandleCount GetProcessHeap GetProcessId GetProcessIoCounters GetProcessTimes GetProductInfo GetQueuedCompletionStatus GetShortPathNameW GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDefaultLCID GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadContext GetThreadId GetThreadLocale GetThreadPreferredUILanguages GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetUserDefaultLangID GetVersion GetVersionExW GetWindowsDirectoryW HeapSetInformation InitOnceExecuteOnce InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process K32GetPerformanceInfo K32GetProcessMemoryInfo K32QueryWorkingSetEx LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LoadResource LocalFree LockFileEx LockResource MapViewOfFile MoveFileExW MoveFileW MultiByteToWideChar OpenProcess OutputDebugStringA OutputDebugStringW PeekNamedPipe PostQueuedCompletionStatus Process32FirstW Process32NextW QueryFullProcessImageNameW QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime QueueUserAPC RaiseException ReadConsoleW ReadFile ReadProcessMemory RegisterWaitForSingleObject ReleaseMutex ReleaseSRWLockExclusive ReleaseSemaphore RemoveDirectoryW ReplaceFileW ResetEvent ResumeThread RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetConsoleCtrlHandler SetCurrentDirectoryW SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFileInformationByHandle SetFilePointer SetFilePointerEx SetFileTime SetHandleInformation SetLastError SetNamedPipeHandleState SetPriorityClass SetProcessShutdownParameters SetStdHandle SetThreadPriority SetUnhandledExceptionFilter SizeofResource Sleep SleepConditionVariableSRW SleepEx SuspendThread SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TransactNamedPipe TryAcquireSRWLockExclusive UnhandledExceptionFilter UnlockFileEx UnmapViewOfFile UnregisterWaitEx UpdateProcThreadAttribute VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualAllocEx VirtualFree VirtualProtect VirtualQuery VirtualQueryEx WTSGetActiveConsoleSessionId WaitForSingleObject WaitForSingleObjectEx WaitNamedPipeW WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte Wow64GetThreadContext WriteConsoleW WriteFile WriteProcessMemory lstrcmpiW

ole32

CoAllowSetForegroundWindow CoCreateInstance CoInitializeEx CoRegisterInitializeSpy CoRevokeInitializeSpy CoSetProxyBlanket CoTaskMemAlloc CoTaskMemFree CoUninitialize PropVariantClear

wtsapi32

WTSFreeMemory WTSQuerySessionInformationW WTSQueryUserToken

netapi32

NetApiBufferFree NetGetJoinInformation

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

propsys

InitPropVariantFromCLSID

shlwapi

ord437 PathMatchSpecW UrlCanonicalizeW

urlmon

CreateURLMonikerEx

oleaut32

SysAllocString SysAllocStringLen SysFreeString SysStringLen VariantClear VariantInit

winmm

timeGetTime

winhttp

WinHttpAddRequestHeaders WinHttpCloseHandle WinHttpConnect WinHttpCrackUrl WinHttpOpen WinHttpOpenRequest WinHttpQueryHeaders WinHttpReadData WinHttpReceiveResponse WinHttpSendRequest WinHttpSetTimeouts WinHttpWriteData

Name

.text

Size

1.8MB

Virtual Size

1.8MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

276KB

Virtual Size

275KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

16KB

Virtual Size

61KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

64KB

Virtual Size

64KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

40B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

24B

Characteristics

Name

.tls

Size

512B

Virtual Size

305B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

CPADinfo

Size

512B

Virtual Size

56B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

512B

Virtual Size

148B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

427KB

Virtual Size

427KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

576KB

Virtual Size

580KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2024-04-03_030a82aef3365d5f1672198ed7702341_ryuk

advapi32

dbghelp

shell32

user32

ws2_32

kernel32

ole32

wtsapi32

netapi32

version

userenv

propsys

shlwapi

urlmon

oleaut32

winmm

winhttp

generic