2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk

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General

Target
2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk
Size 215KB
Sample261024-by969ae121
SHA256 be99971487e4baee4c7c64ff7a6af2161c844727863c1ff9e2b9a48a9c9deb4e
MD5 a7e30c764ac4b53ad2a838d1ecd5d329
SHA1 7c8725396c53c575eb72f8a74b32668b86d66892
SHA512 b8b70d4e8ec2f6df4345fa8633bb125a5efc124298ba398ea4d8ce0351c96f1f5e1c2b8fd65fc0b5676023aa6bebbadb470425daf9bba19d7543d1338b69df8f
SSDEEP 6144:y1V0hoYWeLBg1g9g+6/w+c8P3d5XWVAA:IVaoYW0gG9gR4n
TLSH
T117249C89F69130C4DBF142F12621AEA869E32CE51319D7371263E11CE96DEF1DE39B42
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk

File Explorer

2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk

.exe 215KB

2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk

IMPHASH c00bb297172d5fbc165dcfe75c6e0978
SHA256 be99971487e4baee4c7c64ff7a6af2161c844727863c1ff9e2b9a48a9c9deb4e
MD5 a7e30c764ac4b53ad2a838d1ecd5d329
SHA1 7c8725396c53c575eb72f8a74b32668b86d66892
SHA512 b8b70d4e8ec2f6df4345fa8633bb125a5efc124298ba398ea4d8ce0351c96f1f5e1c2b8fd65fc0b5676023aa6bebbadb470425daf9bba19d7543d1338b69df8f
SSDEEP 6144:y1V0hoYWeLBg1g9g+6/w+c8P3d5XWVAA:IVaoYW0gG9gR4n
TLSH
T117249C89F69130C4DBF142F12621AEA869E32CE51319D7371263E11CE96DEF1DE39B42
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

131072

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

user32

MessageBoxW

shell32

CommandLineToArgvW

kernel32

CloseHandle CreateFileW DeleteCriticalSection EncodePointer EnterCriticalSection ExitProcess FindClose FindFirstFileExW FindNextFileW FlsAlloc FlsFree FlsGetValue FlsSetValue FlushFileBuffers FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleMode GetConsoleOutputCP GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetEnvironmentStringsW GetFileType GetLastError GetModuleFileNameW GetModuleHandleExW GetModuleHandleW GetOEMCP GetProcAddress GetProcessHeap GetStartupInfoW GetStdHandle GetStringTypeW GetSystemTimeAsFileTime HeapAlloc HeapFree HeapReAlloc HeapSize InitializeCriticalSectionEx InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage LCMapStringW LeaveCriticalSection LoadLibraryExW LocalFree MultiByteToWideChar QueryPerformanceCounter RaiseException RtlCaptureContext RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwindEx RtlVirtualUnwind SetFilePointerEx SetLastError SetStdHandle SetUnhandledExceptionFilter TerminateProcess UnhandledExceptionFilter VirtualProtect WideCharToMultiByte WriteConsoleW WriteFile

Name

.text

Size

Virtual Size

60KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

38KB

Virtual Size

40KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.data

Size

3KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

4KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

1KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.lK3AuHA

Size

52KB

Virtual Size

52KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.firefly

Size

112KB

Virtual Size

116KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

2KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2026-10-22_a7e30c764ac4b53ad2a838d1ecd5d329_ryuk

user32

shell32

kernel32

generic