2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk

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General

Target
2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk
Size 2.2MB
Sample240407-yshldade48
SHA256 b7447426f5c11a19f2080a6417c2382d0d7fd7866ef8c866e52ebd94f4068833
MD5 7a1b3dd44d04c80ca5a760ee5443a651
SHA1 50f8ba3ca03910f5f66c3eae596bc282362db9f8
SHA512 eccad1c131d05b1a9fc6d734dcb80594c5cf05fa70debee9ac383218e7c84ec4cf5b71610aa7696177ed9acc6c043bcc7a6b1d0eab7bd100c8e664e69efeb854
SSDEEP 49152:0OOh3aN4kuLbegmtGz5UbU62FAQ228QKl:+U4ku/ctwqj2FAQL
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk

File Explorer

2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk

.exe 2.2MB

2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk

IMPHASH d82a8c58db04f82963aac4f4544477c8
SHA256 b7447426f5c11a19f2080a6417c2382d0d7fd7866ef8c866e52ebd94f4068833
MD5 7a1b3dd44d04c80ca5a760ee5443a651
SHA1 50f8ba3ca03910f5f66c3eae596bc282362db9f8
SHA512 eccad1c131d05b1a9fc6d734dcb80594c5cf05fa70debee9ac383218e7c84ec4cf5b71610aa7696177ed9acc6c043bcc7a6b1d0eab7bd100c8e664e69efeb854
SSDEEP 49152:0OOh3aN4kuLbegmtGz5UbU62FAQ228QKl:+U4ku/ctwqj2FAQL
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

616368

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\chrome_pwa_launcher.exe.pdb

advapi32

CreateProcessAsUserW EventRegister EventSetInformation 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 FlsFree FlsGetValue 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 InitializeProcThreadAttributeList InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage IsValidLocale IsWow64Process LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LocalFree MultiByteToWideChar OutputDebugStringA 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 VirtualAlloc VirtualFree VirtualProtect VirtualQuery WaitForSingleObject WaitForSingleObjectEx WakeAllConditionVariable WakeConditionVariable WideCharToMultiByte WriteConsoleW WriteFile lstrcmpiW lstrlenA

winmm

timeGetTime

userenv

CreateEnvironmentBlock DestroyEnvironmentBlock

user32

AllowSetForegroundWindow GetActiveWindow

shell32

CommandLineToArgvW SHGetFolderPathW SHGetKnownFolderPath ShellExecuteExW

ole32

CoRevokeInitializeSpy CoTaskMemFree CoUninitialize

ntdll

NtClose NtOpenKeyEx NtQueryValueKey RtlFormatCurrentUserKeyPath RtlFreeUnicodeString RtlInitUnicodeString

Name

.text

Size

1.0MB

Virtual Size

1.0MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

274KB

Virtual Size

274KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

62KB

Virtual Size

105KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

33KB

Virtual Size

33KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

48B

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

172B

Characteristics

Name

.tls

Size

512B

Virtual Size

433B

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

348B

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

2024-04-07_7a1b3dd44d04c80ca5a760ee5443a651_ryuk

advapi32

kernel32

winmm

userenv

user32

shell32

ole32

ntdll

generic