2024-04-03_5ba9af93d5d130f64ac17473f8c5a20a_ryuk

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General

Target
2024-04-03_5ba9af93d5d130f64ac17473f8c5a20a_ryuk
Size 2.1MB
Sample240403-l1la1scc87
SHA256 3e12bb63131add21f663217b67c05a7d53b41babdd00fae7ab4e8fe3f0a320a7
MD5 5ba9af93d5d130f64ac17473f8c5a20a
SHA1 0d55dca12618c19be9ab629133de44f48865b32d
SHA512 caedd2c7e3b181d517b8ee7f5721c1e3557f547ded0687f190e7f03fbe84ea596a20bd7af4c214fb8dfedaa7eabcca53aff1e77168727cb6ec8f4b18a2c229c2
SSDEEP 49152:zsOwbb13ntb+g2nxDv1PZ1LTbXvHs3M9sR:zI13tb+Z3js3/
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-03_5ba9af93d5d130f64ac17473f8c5a20a_ryuk

File Explorer

2024-04-03_5ba9af93d5d130f64ac17473f8c5a20a_ryuk

.exe 2.1MB

2024-04-03_5ba9af93d5d130f64ac17473f8c5a20a_ryuk

IMPHASH d2502f6e4b06fad327568e169cb1f370
SHA256 3e12bb63131add21f663217b67c05a7d53b41babdd00fae7ab4e8fe3f0a320a7
MD5 5ba9af93d5d130f64ac17473f8c5a20a
SHA1 0d55dca12618c19be9ab629133de44f48865b32d
SHA512 caedd2c7e3b181d517b8ee7f5721c1e3557f547ded0687f190e7f03fbe84ea596a20bd7af4c214fb8dfedaa7eabcca53aff1e77168727cb6ec8f4b18a2c229c2
SSDEEP 49152:zsOwbb13ntb+g2nxDv1PZ1LTbXvHs3M9sR:zI13tb+Z3js3/
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

696016

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\elevation_service.exe.pdb

advapi32

AddAce BuildTrusteeWithSidW ConvertStringSidToSidW CopySid CreateProcessAsUserW GetAclInformation GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorControl GetSecurityDescriptorDacl GetSecurityDescriptorGroup GetSecurityDescriptorOwner GetSecurityDescriptorSacl GetSidLengthRequired GetSidSubAuthority InitializeAcl InitializeSecurityDescriptor InitializeSid IsValidAcl IsValidSecurityDescriptor IsValidSid MakeAbsoluteSD RegCloseKey RegOpenKeyExW RegQueryValueExW RegisterServiceCtrlHandlerW SetEntriesInAclW SetNamedSecurityInfoW SetSecurityDescriptorDacl SetSecurityDescriptorGroup SetSecurityDescriptorOwner SetSecurityInfo SetServiceStatus StartServiceCtrlDispatcherW

oleaut32

SysAllocStringByteLen SysStringByteLen

user32

AllowSetForegroundWindow GetActiveWindow UnregisterClassW

kernel32

AcquireSRWLockExclusive AcquireSRWLockShared AssignProcessToJobObject CloseHandle CompareStringW CreateDirectoryW CreateEventW CreateFileA CreateFileMappingW CreateFileW CreateProcessW CreateThread DecodePointer DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExitThread ExpandEnvironmentStringsW FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FormatMessageW FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesW GetFileSizeEx GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetProcessId GetProductInfo GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetVersionExW GetWindowsDirectoryW HeapAlloc HeapDestroy HeapFree HeapReAlloc HeapSetInformation HeapSize InitOnceExecuteOnce InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead InitializeSRWLock IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LocalFree MapViewOfFile MoveFileExW MultiByteToWideChar OpenProcess OutputDebugStringA OutputDebugStringW QueryFullProcessImageNameA QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive ReleaseSRWLockShared RemoveDirectoryW ResetEvent RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFilePointer SetFilePointerEx SetFileTime SetHandleInformation SetLastError SetStdHandle SetThreadInformation SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW SwitchToThread SystemTimeToFileTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TryAcquireSRWLockExclusive TzSpecificLocalTimeToSystemTime UnhandledExceptionFilter UnmapViewOfFile UnregisterWaitEx UpdateProcThreadAttribute VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitForSingleObjectEx WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte WriteConsoleW WriteFile lstrcmpiW lstrlenA

ole32

CoAddRefServerProcess CoImpersonateClient CoInitializeEx CoInitializeSecurity CoRegisterClassObject CoRegisterInitializeSpy CoReleaseServerProcess CoResumeClassObjects CoRevertToSelf CoRevokeClassObject CoRevokeInitializeSpy CoTaskMemFree CoUninitialize IIDFromString

crypt32

CryptProtectData CryptUnprotectData

rpcrt4

I_RpcOpenClientProcess

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

shell32

CommandLineToArgvW ord680 SHGetFolderPathW SHGetKnownFolderPath ShellExecuteExW

shlwapi

PathMatchSpecW

winmm

timeGetTime

ntdll

NtClose NtOpenKeyEx NtQueryValueKey RtlFormatCurrentUserKeyPath RtlFreeUnicodeString RtlInitUnicodeString

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

RoUninitialize

Name

.text

Size

1.2MB

Virtual Size

1.2MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

226KB

Virtual Size

225KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

58KB

Virtual Size

99KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

42KB

Virtual Size

41KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

11KB

Virtual Size

10KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

156B

Characteristics

Name

.tls

Size

512B

Virtual Size

481B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

512B

Virtual Size

348B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

6KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

572KB

Virtual Size

576KB

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_5ba9af93d5d130f64ac17473f8c5a20a_ryuk

advapi32

oleaut32

user32

kernel32

ole32

crypt32

rpcrt4

userenv

shell32

shlwapi

winmm

ntdll

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

generic