2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk

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General

Target
2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk
Size 1.8MB
Sample240403-mnb29acb9t
SHA256 9dc0426d14aec9386968d8db3403a824c15a0767f18587c7053a0dbf80bb46fa
MD5 fa8e1be240924e506e79d468a917d168
SHA1 6cf82a7c8abafcbaa63b070f3da3ad5ac3c1ac73
SHA512 d2d414dee4a19c92b6bb7a75dc61f3a283c7a505789df3333cc013f27b3c96edad96afb7b4e5cd1d63fe08619ec8d4d24fcfa02bd36c847e9edfaeb9b0557f9c
SSDEEP 49152:CKfuPS3ELNjV7IZxEfOflgwf04gDUYmvFur31yAipQCtXxc0H:Fm9sZxjghU7dG1yfpVBlH
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk

File Explorer

2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk

.exe 1.8MB

2024-04-03_fa8e1be240924e506e79d468a917d168_ryuk

IMPHASH dd061a041f2c958eec46d4e923562065
SHA256 9dc0426d14aec9386968d8db3403a824c15a0767f18587c7053a0dbf80bb46fa
MD5 fa8e1be240924e506e79d468a917d168
SHA1 6cf82a7c8abafcbaa63b070f3da3ad5ac3c1ac73
SHA512 d2d414dee4a19c92b6bb7a75dc61f3a283c7a505789df3333cc013f27b3c96edad96afb7b4e5cd1d63fe08619ec8d4d24fcfa02bd36c847e9edfaeb9b0557f9c
SSDEEP 49152:CKfuPS3ELNjV7IZxEfOflgwf04gDUYmvFur31yAipQCtXxc0H:Fm9sZxjghU7dG1yfpVBlH
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

436032

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

chrome_pwa_launcher.exe.pdb

advapi32

CreateProcessAsUserW EventRegister EventUnregister EventWrite RegCloseKey RegCreateKeyExW RegOpenKeyExW RegQueryValueExW RegSetValueExW SystemFunction036

kernel32

AcquireSRWLockExclusive AssignProcessToJobObject CloseHandle CompareStringW CreateEventW CreateFileW CreateProcessW CreateThread DeleteCriticalSection DeleteFileW DeleteProcThreadAttributeList DuplicateHandle EncodePointer EnterCriticalSection EnumSystemLocalesW ExitProcess ExitThread ExpandEnvironmentStringsW FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsSetValue FlushFileBuffers FormatMessageA FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDateFormatW GetDriveTypeW GetEnvironmentStringsW GetEnvironmentVariableW GetExitCodeProcess GetFileAttributesW GetFileInformationByHandle GetFileSizeEx GetFileType GetFullPathNameW GetLastError GetLocalTime GetLocaleInfoW GetModuleFileNameW GetModuleHandleA GetModuleHandleExW GetModuleHandleW GetNativeSystemInfo GetOEMCP GetProcAddress GetProcessHeap GetProcessId GetProductInfo GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTempPathW GetThreadId GetThreadPriority GetTickCount GetTimeFormatW GetTimeZoneInformation GetUserDefaultLCID GetVersionExW GetWindowsDirectoryW InitOnceExecuteOnce InitializeCriticalSectionAndSpinCount InitializeCriticalSectionEx InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LocalFree MultiByteToWideChar OutputDebugStringA OutputDebugStringW QueryPerformanceCounter QueryPerformanceFrequency QueryThreadCycleTime RaiseException ReadConsoleW ReadFile ReleaseSRWLockExclusive ResetEvent RtlCaptureContext RtlCaptureStackBackTrace RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetEndOfFile SetEnvironmentVariableW SetEvent SetFilePointerEx SetHandleInformation SetLastError SetStdHandle SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue TryAcquireSRWLockExclusive UnhandledExceptionFilter UnregisterWaitEx UpdateProcThreadAttribute VerSetConditionMask VerifyVersionInfoW VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitForSingleObjectEx WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte WriteConsoleW WriteFile lstrcmpiW

shell32

CommandLineToArgvW SHGetFolderPathW SHGetKnownFolderPath

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

user32

AllowSetForegroundWindow

ole32

CoInitializeEx CoRegisterInitializeSpy CoRevokeInitializeSpy CoTaskMemFree CoUninitialize

winmm

timeGetTime

Name

.text

Size

809KB

Virtual Size

809KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

159KB

Virtual Size

159KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

13KB

Virtual Size

46KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

30KB

Virtual Size

30KB

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

12B

Characteristics

Name

.tls

Size

512B

Virtual Size

289B

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

266KB

Virtual Size

265KB

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_fa8e1be240924e506e79d468a917d168_ryuk

advapi32

kernel32

shell32

userenv

user32

ole32

winmm

generic