2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk

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General

Target
2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk
Size 222KB
Sample260823-xkr96styay
SHA256 298e0aaa344809103b597c496dec59f2ab8c7369d47a1163797071601f2bd6d7
MD5 dab4d825dcfd659d50b9f5309a363c3d
SHA1 47c3b5a5c861f93c31a5f26fcfb3e9112d079e61
SHA512 8793a69d27cf34e9bf2466d52f3760e34bb94eab5d107bab49821062a2d1ec17a9b4dfbb6118203aa835f98c2b68ef6431bc067ad818366641055b5e5ca2c6d6
SSDEEP 3072:OBm7IPQYzbRIU8dodz4yESP4gT0WoaO4ZEWkI/nQNG25YFeqC9dI:OBm5FFRyESPAWoGEWDvOG2icp
TLSH
T1D924575FB205ABC5D79E56FAAC3B9C3C57E2BCA149650B131140630E2CE2E8DBD674C2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk

File Explorer

2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk

.exe 222KB

2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk

IMPHASH c00bb297172d5fbc165dcfe75c6e0978
SHA256 298e0aaa344809103b597c496dec59f2ab8c7369d47a1163797071601f2bd6d7
MD5 dab4d825dcfd659d50b9f5309a363c3d
SHA1 47c3b5a5c861f93c31a5f26fcfb3e9112d079e61
SHA512 8793a69d27cf34e9bf2466d52f3760e34bb94eab5d107bab49821062a2d1ec17a9b4dfbb6118203aa835f98c2b68ef6431bc067ad818366641055b5e5ca2c6d6
SSDEEP 3072:OBm7IPQYzbRIU8dodz4yESP4gT0WoaO4ZEWkI/nQNG25YFeqC9dI:OBm5FFRyESPAWoGEWDvOG2icp
TLSH
T1D924575FB205ABC5D79E56FAAC3B9C3C57E2BCA149650B131140630E2CE2E8DBD674C2
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

57KB

Virtual Size

57KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

38KB

Virtual Size

37KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

_RDATA

Size

1KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.vU0glla

Size

52KB

Virtual Size

52KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.firefly

Size

61KB

Virtual Size

60KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2026-08-23_dab4d825dcfd659d50b9f5309a363c3d_ryuk

user32

shell32

kernel32

generic