2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk

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General

Target
2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk
Size 664KB
Sample250926-ep2ejaszes
SHA256 13066c7c4c04f42ba49bd4af34e0d0584e966f705994191ffbc4dd73e18a962b
MD5 9637ab7a66efc1663e05bc66f38cf18b
SHA1 e710d0be2d8a5ac7ea8431f8fdaf6e888b686f97
SHA512 f34092238391baff7805950cbe12c33bbc9473354827812a192c3b0dc05ec24cdd48bdd966ff682e20171cb850369ddf465c010df1814b2dd38905987e3dda6d
SSDEEP 12288:6s97Jk+SoCU5qJSr1ey2UgokjWLjepvgzAwHUzTsh/gsdq:hvSoCU5qJSr1ey2HKLjepvgzFeTsq
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk

File Explorer

2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk

.exe 664KB

2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk

IMPHASH 4d7ee3dbe35baab5e33b9a84e9397818
SHA256 13066c7c4c04f42ba49bd4af34e0d0584e966f705994191ffbc4dd73e18a962b
MD5 9637ab7a66efc1663e05bc66f38cf18b
SHA1 e710d0be2d8a5ac7ea8431f8fdaf6e888b686f97
SHA512 f34092238391baff7805950cbe12c33bbc9473354827812a192c3b0dc05ec24cdd48bdd966ff682e20171cb850369ddf465c010df1814b2dd38905987e3dda6d
SSDEEP 12288:6s97Jk+SoCU5qJSr1ey2UgokjWLjepvgzAwHUzTsh/gsdq:hvSoCU5qJSr1ey2HKLjepvgzFeTsq
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

38856

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

E:\CPython\cpython35\lib\distutils\command\wininst-14.0-amd64.pdb

comctl32

CreatePropertySheetPageA PropertySheetA

kernel32

SetThreadPriority SetFilePointer ResumeThread GetModuleHandleA MultiByteToWideChar GetTempPathA GetCurrentThread LoadLibraryA DeleteFileA SetStdHandle GetProcAddress LocalFree GetFileSize RemoveDirectoryA FreeLibrary CreateProcessA FormatMessageA GetTempFileNameA GetPrivateProfileIntA GetPrivateProfileStringA GetTempPathW CreateDirectoryA GetModuleFileNameW FlushFileBuffers SetFilePointerEx SetEndOfFile GetFileAttributesExW SetConsoleCtrlHandler GetProcessHeap FreeEnvironmentStringsW GetEnvironmentStringsW GetCPInfo GetOEMCP IsValidCodePage FindNextFileW FindNextFileA FindFirstFileExW FindFirstFileExA FindClose CreateThread WaitForSingleObjectEx OutputDebugStringW OutputDebugStringA GetFullPathNameA GetFullPathNameW GetCurrentDirectoryW SetCurrentDirectoryW LoadLibraryExA GetStdHandle GetCurrentProcess SetPriorityClass GetModuleFileNameA ReadFile MapViewOfFile WriteConsoleW DosDateTimeToFileTime CreateFileMappingA CloseHandle CreateFileA GetFileAttributesA GetLastError UnmapViewOfFile lstrlenA SetFileTime SetLastError HeapSize GetTimeZoneInformation RaiseException GetStringTypeW GetConsoleCP HeapReAlloc SetEnvironmentVariableW RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter TerminateProcess IsProcessorFeaturePresent QueryPerformanceCounter GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead IsDebuggerPresent GetStartupInfoW GetModuleHandleW RtlUnwindEx InterlockedPushEntrySList InterlockedFlushSList EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree LoadLibraryExW WideCharToMultiByte GetCommandLineA GetCommandLineW CreateFileW GetDriveTypeW GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime WriteFile ExitProcess GetModuleHandleExW GetACP GetConsoleMode ReadConsoleW HeapFree HeapAlloc GetDateFormatW GetTimeFormatW CompareStringW LCMapStringW GetLocaleInfoW IsValidLocale GetUserDefaultLCID EnumSystemLocalesW SetEnvironmentVariableA

user32

ReleaseDC BeginPaint EndPaint DispatchMessageA GetWindowRect GetFocus LoadCursorA GetDC PostMessageA GetSystemMetrics wsprintfA ShowWindow MessageBoxA MoveWindow RegisterClassA DefWindowProcA CreateWindowExA TranslateMessage SendDlgItemMessageA SetDlgItemTextA SendMessageA SetCursor GetDlgItem PeekMessageA GetParent UpdateWindow

gdi32

SelectObject CreateDIBitmap SetTextColor TextOutA SetBkMode DeleteObject CreateSolidBrush CreateFontA

advapi32

RegDeleteValueA RegOpenKeyExA RegCloseKey RegDeleteKeyA RegQueryValueExA RegCreateKeyExA RegQueryValueA RegSetValueExA RegEnumKeyExA

shell32

ShellExecuteA

ole32

CoUninitialize CoCreateInstance CoInitialize

Name

.text

Size

432KB

Virtual Size

431KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

106KB

Virtual Size

105KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

4KB

Virtual Size

18KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

23KB

Virtual Size

22KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.gfids

Size

512B

Virtual Size

372B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

5KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

2025-09-26_9637ab7a66efc1663e05bc66f38cf18b_njrat_ryuk

comctl32

kernel32

user32

gdi32

advapi32

shell32

ole32

generic