2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk

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General

Target
2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk
Size 4.6MB
Sample240613-pr95kayfle
SHA256 079edb26f610e537bb8fd02730f1c674d8eafd1877dac4446021ff9385cb910c
MD5 5f39bf2bf4d7d208dfec49f0ba9256f7
SHA1 c31dbe4d6debb4340fcc198bd51aa9e0a1da86d3
SHA512 53ddeee3af7a5a4f95ffa251528e03ccad8329537fabd12b3ca05a1f9bd3eada6e1fb6397cc196c8b44a4d862c7b31892220735c15282a30644af10b51c4293d
SSDEEP 49152:YndPjazwYcCOlBWD9rqGZi0iIGTHI6DOnIIeNxu6xl1aZt6m5xbzDI6bpsRJrAGB:S2D8siFIIm3Gob5iEbB2Yyjl
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk

File Explorer

2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk

.exe 4.6MB

2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk

IMPHASH 5ee2ab762fa8d4fc5f9a047c2ed853ea
SHA256 079edb26f610e537bb8fd02730f1c674d8eafd1877dac4446021ff9385cb910c
MD5 5f39bf2bf4d7d208dfec49f0ba9256f7
SHA1 c31dbe4d6debb4340fcc198bd51aa9e0a1da86d3
SHA512 53ddeee3af7a5a4f95ffa251528e03ccad8329537fabd12b3ca05a1f9bd3eada6e1fb6397cc196c8b44a4d862c7b31892220735c15282a30644af10b51c4293d
SSDEEP 49152:YndPjazwYcCOlBWD9rqGZi0iIGTHI6DOnIIeNxu6xl1aZt6m5xbzDI6bpsRJrAGB:S2D8siFIIm3Gob5iEbB2Yyjl
MD5 SHA1 SHA512 SSDEEP

windows:10 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

1382192

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

C:\b\s\w\ir\cache\builder\src\out\Release_x64\setup.exe.pdb

advapi32

AdjustTokenPrivileges BuildExplicitAccessWithNameW BuildSecurityDescriptorW BuildTrusteeWithSidW ChangeServiceConfigW CheckTokenMembership CloseServiceHandle ConvertSidToStringSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW CreateProcessAsUserW CreateServiceW CreateWellKnownSid DeleteService DeregisterEventSource DuplicateTokenEx GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorControl GetSecurityDescriptorDacl GetSecurityDescriptorGroup GetSecurityDescriptorOwner GetSecurityDescriptorSacl GetSidSubAuthority GetSidSubAuthorityCount GetTokenInformation GetTraceEnableFlags GetTraceEnableLevel GetTraceLoggerHandle GetUserNameW ImpersonateNamedPipeClient IsValidAcl IsValidSecurityDescriptor IsValidSid LookupPrivilegeValueW OpenProcessToken OpenSCManagerW OpenServiceW QueryServiceConfigW RegCloseKey RegCreateKeyExW RegDeleteKeyExW RegDeleteValueW RegEnumKeyExW RegEnumValueA RegEnumValueW RegLoadKeyW RegOpenKeyExW RegQueryInfoKeyW RegQueryValueExA RegQueryValueExW RegSetValueExW RegUnLoadKeyW RegisterEventSourceA RegisterTraceGuidsW ReportEventA RevertToSelf SetEntriesInAclW SetNamedSecurityInfoW SetSecurityInfo TraceEvent UnregisterTraceGuids

dbghelp

SymCleanup SymFromAddr SymGetLineFromAddr64 SymGetSearchPathW SymInitialize SymSetOptions SymSetSearchPathW

shell32

CommandLineToArgvW ord190 ord155 ord680 SHChangeNotify SHGetFolderPathW SHGetKnownFolderPath ShellExecuteExW ShellExecuteW

user32

AllowSetForegroundWindow CallNextHookEx CharUpperW CreateWindowExW DefWindowProcW DestroyWindow DispatchMessageW GetActiveWindow GetMessageW GetMonitorInfoW GetQueueStatus GetWindowLongPtrW KillTimer LoadIconW MessageBoxW MonitorFromWindow MoveWindow MsgWaitForMultipleObjectsEx PeekMessageW PostMessageW PostQuitMessage RegisterClassExW RegisterClassW SendMessageW SetForegroundWindow SetTimer SetWindowLongPtrW SetWindowsHookExW TranslateMessage UnhookWindowsHookEx UnregisterClassW

ws2_32

ntohl

kernel32

AcquireSRWLockExclusive AcquireSRWLockShared AddVectoredExceptionHandler AssignProcessToJobObject CloseHandle CompareStringW ConnectNamedPipe CopyFileW CreateDirectoryW CreateEventW CreateFileA 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 FlsFree FlsGetValue FlsSetValue FlushFileBuffers FlushViewOfFile FormatMessageA FormatMessageW FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW 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 GetProcessMitigationPolicy GetProcessTimes GetProductInfo GetQueuedCompletionStatus GetShortPathNameW GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDefaultLCID GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadContext GetThreadId GetThreadLocale GetThreadPreferredUILanguages GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetUserDefaultLangID GetVersionExW GetWindowsDirectoryW GlobalAlloc GlobalFree HeapSetInformation InitOnceExecuteOnce InitializeConditionVariable InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeProcThreadAttributeList InitializeSListHead InitializeSRWLock IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process K32GetModuleInformation K32GetPerformanceInfo K32GetProcessMemoryInfo K32QueryWorkingSetEx LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LoadResource LocalFree LockFileEx LockResource MapViewOfFile MoveFileExW MoveFileW MultiByteToWideChar OpenMutexW OpenProcess OutputDebugStringA PeekNamedPipe PostQueuedCompletionStatus Process32FirstW Process32NextW QueryFullProcessImageNameW QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime QueueUserAPC RaiseException ReadConsoleW ReadFile ReadProcessMemory RegisterWaitForSingleObject ReleaseMutex ReleaseSRWLockExclusive ReleaseSRWLockShared ReleaseSemaphore RemoveDirectoryW RemoveVectoredExceptionHandler ReplaceFileW ResetEvent ResumeThread RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetConsoleCtrlHandler SetCurrentDirectoryW SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFileInformationByHandle SetFilePointerEx SetFileTime SetHandleInformation SetLastError SetNamedPipeHandleState SetPriorityClass SetProcessShutdownParameters SetStdHandle SetThreadInformation SetThreadPriority SetUnhandledExceptionFilter SizeofResource Sleep SleepConditionVariableSRW SleepEx SuspendThread SwitchToThread SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TransactNamedPipe TryAcquireSRWLockExclusive UnhandledExceptionFilter UnlockFileEx UnmapViewOfFile UnregisterWaitEx UpdateProcThreadAttribute VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualAllocEx VirtualFree VirtualProtect VirtualQuery VirtualQueryEx WaitForMultipleObjects WaitForSingleObject WaitNamedPipeW WakeAllConditionVariable WakeConditionVariable WerRegisterRuntimeExceptionModule WideCharToMultiByte Wow64GetThreadContext WriteConsoleW WriteFile WriteProcessMemory lstrcmpiW lstrlenA

winhttp

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

ole32

CoAllowSetForegroundWindow CoCreateInstance CoInitializeEx CoRegisterInitializeSpy CoRevokeInitializeSpy CoSetProxyBlanket CoTaskMemAlloc CoTaskMemFree CoUninitialize PropVariantClear

propsys

InitPropVariantFromCLSID

shlwapi

ord437 PathMatchSpecW UrlCanonicalizeW

ntdll

NtClose NtDeleteKey NtOpenKeyEx NtQueryValueKey RtlFormatCurrentUserKeyPath RtlFreeUnicodeString RtlInitUnicodeString

winmm

timeBeginPeriod timeEndPeriod timeGetTime

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

urlmon

CreateURLMonikerEx

oleaut32

SysAllocString SysAllocStringLen SysFreeString SysStringLen VariantClear VariantInit

ncrypt

NCryptCreatePersistedKey NCryptExportKey NCryptFinalizeKey NCryptFreeObject NCryptGetProperty NCryptImportKey NCryptIsAlgSupported NCryptOpenStorageProvider NCryptSignHash

api-ms-win-core-winrt-l1-1-0

RoUninitialize

Name

.text

Size

2.8MB

Virtual Size

2.8MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

571KB

Virtual Size

570KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

68KB

Virtual Size

123KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

97KB

Virtual Size

97KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

12KB

Virtual Size

12KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

172B

Characteristics

Name

.tls

Size

1024B

Virtual Size

585B

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

LZMADEC

Size

4KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

431KB

Virtual Size

430KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

580KB

Virtual Size

584KB

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

2024-06-13_5f39bf2bf4d7d208dfec49f0ba9256f7_ryuk

advapi32

dbghelp

shell32

user32

ws2_32

kernel32

winhttp

ole32

propsys

shlwapi

ntdll

winmm

userenv

version

urlmon

oleaut32

ncrypt

api-ms-win-core-winrt-l1-1-0

generic