2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk

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General

Target
2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk
Size 2.2MB
Sample240603-mpxeksch24
SHA256 80a0967d47f7f4c43dfe03ece76cbc8893bb0762820291712e9956e60531ca3e
MD5 cfe5f37d505a035c6a38203787ec6150
SHA1 20a7b8a6e479682a6f845b5c898097184adad2d1
SHA512 4692232a9b3dc1735347dc86c52535e7c831a03093d9d02ca6947dfb9b1e811b0cd95116e2756a842a65f15775570c77055d1e8737e450a4c848f9bf565f5215
SSDEEP 49152:cNl7soq7sQCc1kyG2xHywRfHIO2Ts4bvDcf9Ckt7c20+9qNxUW:ID2311kaxp9qcfEkKK90
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk

File Explorer

2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk

.exe 2.2MB

2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk

IMPHASH d61c2a70edfb7fa46f66340615b29c8f
SHA256 80a0967d47f7f4c43dfe03ece76cbc8893bb0762820291712e9956e60531ca3e
MD5 cfe5f37d505a035c6a38203787ec6150
SHA1 20a7b8a6e479682a6f845b5c898097184adad2d1
SHA512 4692232a9b3dc1735347dc86c52535e7c831a03093d9d02ca6947dfb9b1e811b0cd95116e2756a842a65f15775570c77055d1e8737e450a4c848f9bf565f5215
SSDEEP 49152:cNl7soq7sQCc1kyG2xHywRfHIO2Ts4bvDcf9Ckt7c20+9qNxUW:ID2311kaxp9qcfEkKK90
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

740912

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 EventRegister EventSetInformation EventUnregister EventWrite 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 SystemFunction036

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 FormatMessageA 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 GetThreadId 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 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 SetThreadPriority SetUnhandledExceptionFilter Sleep SleepConditionVariableSRW 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

Name

.text

Size

1.3MB

Virtual Size

1.3MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

214KB

Virtual Size

213KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

62KB

Virtual Size

107KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

44KB

Virtual Size

44KB

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

10KB

Virtual Size

10KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.retplne

Size

512B

Virtual Size

156B

Characteristics

Name

.tls

Size

1024B

Virtual Size

513B

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

2024-06-03_cfe5f37d505a035c6a38203787ec6150_ryuk

advapi32

oleaut32

user32

kernel32

ole32

crypt32

rpcrt4

userenv

shell32

shlwapi

winmm

ntdll

generic