2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk

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General

Target
2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk
Size 1.8MB
Sample240603-ajddascc3y
SHA256 00c5aa7fa85c15bf852997c21a5865a03db928d0707cb110d86ff409bb8d928e
MD5 87a3390c1470414c9e2e3a189a043aba
SHA1 b4d9c8088b869033d2933a21bb28b30377469f49
SHA512 8db476b11ceb38c56088ee372cc32600e0b8ffda2dfc82db34f60f6fe0d09867484fba3912518279d270c8da5d4dafc47a859e04599be528c839109571182ae9
SSDEEP 49152:hmzkJLnKm313nOxr01YjyJVJyNfyPtYuTt3eIM:hCksi13FYjQHiqPtXBeIM
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk

File Explorer

2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk

.exe 1.8MB

2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk

IMPHASH 0c257ff441f03da6114d70c14dca673e
SHA256 00c5aa7fa85c15bf852997c21a5865a03db928d0707cb110d86ff409bb8d928e
MD5 87a3390c1470414c9e2e3a189a043aba
SHA1 b4d9c8088b869033d2933a21bb28b30377469f49
SHA512 8db476b11ceb38c56088ee372cc32600e0b8ffda2dfc82db34f60f6fe0d09867484fba3912518279d270c8da5d4dafc47a859e04599be528c839109571182ae9
SSDEEP 49152:hmzkJLnKm313nOxr01YjyJVJyNfyPtYuTt3eIM:hCksi13FYjQHiqPtXBeIM
MD5 SHA1 SHA512 SSDEEP

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

527536

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\notification_helper.exe.pdb

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

RoOriginateError

advapi32

BuildExplicitAccessWithNameW BuildSecurityDescriptorW BuildTrusteeWithSidW ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertStringSidToSidW GetLengthSid GetNamedSecurityInfoW GetSecurityDescriptorControl GetSecurityDescriptorDacl GetSecurityDescriptorGroup GetSecurityDescriptorOwner GetSecurityDescriptorSacl IsValidAcl IsValidSecurityDescriptor IsValidSid RegCloseKey RegOpenKeyExW RegQueryValueExW SetEntriesInAclW SetNamedSecurityInfoW SetSecurityInfo

shell32

CommandLineToArgvW ord680 SHGetFolderPathW SHGetKnownFolderPath ShellExecuteExW

user32

AllowSetForegroundWindow SendInput

kernel32

AcquireSRWLockExclusive AddVectoredExceptionHandler CloseHandle CompareStringW CreateDirectoryW CreateEventW CreateFileW CreateNamedPipeW CreateProcessW CreateThread DecodePointer DeleteCriticalSection DeleteFileW EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExitThread ExpandEnvironmentStringsW FileTimeToSystemTime FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FormatMessageW FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetComputerNameExW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetEnvironmentVariableW GetFileAttributesW GetFileInformationByHandle GetFileSizeEx GetFileTime GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetLongPathNameW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetProcessId GetProcessTimes GetProductInfo GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadId GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetUserDefaultLangID GetVersionExW GetWindowsDirectoryW HeapSetInformation InitOnceExecuteOnce InitializeCriticalSection InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process K32QueryWorkingSetEx LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LoadLibraryW LocalFree LockFileEx MapViewOfFile MoveFileW MultiByteToWideChar OpenProcess OutputDebugStringA OutputDebugStringW PeekNamedPipe QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive RemoveDirectoryW RemoveVectoredExceptionHandler ReplaceFileW RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetConsoleCtrlHandler SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFileInformationByHandle SetFilePointerEx SetLastError SetNamedPipeHandleState SetStdHandle SetThreadInformation SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW SleepEx SwitchToThread SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TransactNamedPipe TryAcquireSRWLockExclusive UnhandledExceptionFilter UnlockFileEx UnmapViewOfFile UnregisterWaitEx VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitNamedPipeW WakeAllConditionVariable WakeConditionVariable WerRegisterRuntimeExceptionModule WideCharToMultiByte WriteConsoleW WriteFile lstrcmpW lstrcmpiW lstrlenA

ole32

CoAddRefServerProcess CoRegisterClassObject CoReleaseServerProcess CoResumeClassObjects CoRevokeClassObject CoRevokeInitializeSpy CoTaskMemFree CoUninitialize

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

RoInitialize RoUninitialize

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

winmm

timeGetTime

shlwapi

PathMatchSpecW

ntdll

NtClose NtOpenKeyEx NtQueryValueKey RtlFormatCurrentUserKeyPath RtlFreeUnicodeString RtlInitUnicodeString

Name

.text

Size

947KB

Virtual Size

947KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

203KB

Virtual Size

203KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

59KB

Virtual Size

99KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

36KB

Virtual Size

35KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gxfg

Size

11KB

Virtual Size

11KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

140B

Characteristics

Name

.tls

Size

512B

Virtual Size

377B

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

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

2KB

Virtual Size

2KB

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

2024-06-02_87a3390c1470414c9e2e3a189a043aba_ryuk

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

advapi32

shell32

user32

kernel32

ole32

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

version

winmm

shlwapi

ntdll

generic