lumka[.]exe | Triage™

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General

Target
lumka.exe
Size 3.7MB
Sample260930-vbhchascpb
SHA256 fe131cccbe8b6a37e315164b5cc3e1b02d58aa811ce7f54f05be134014dba191
MD5 4d5af2bcb221cb5c4204d40b80e37429
SHA1 26e1fbdda492d993e92f25938cb838da96c805ed
SHA512 57508ac23526695eb7337d21a09c869f6f1d030616a7f912230845daa2fc9ea70396c495d6c500496474bc1dfc3a280ccf0343b66afd2e4324df283cdfcb4580
SSDEEP 98304:24QqTJMaLz4ccMflIPzA59BjynYm1IfB/N8:mSJnkcZfF9ZynYm1IZ/N
TLSH
T1EC06F101B5E442B9D073C178918B5A0FF771740A53614EDF23E959812B93ED2AFBE32A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
lumka.exe

File Explorer

lumka.exe

.exe 3.7MB

lumka.exe

IMPHASH 66ba78dd5f81505d86711bab5a3746b3
SHA256 fe131cccbe8b6a37e315164b5cc3e1b02d58aa811ce7f54f05be134014dba191
MD5 4d5af2bcb221cb5c4204d40b80e37429
SHA1 26e1fbdda492d993e92f25938cb838da96c805ed
SHA512 57508ac23526695eb7337d21a09c869f6f1d030616a7f912230845daa2fc9ea70396c495d6c500496474bc1dfc3a280ccf0343b66afd2e4324df283cdfcb4580
SSDEEP 98304:24QqTJMaLz4ccMflIPzA59BjynYm1IfB/N8:mSJnkcZfF9ZynYm1IZ/N
TLSH
T1EC06F101B5E442B9D073C178918B5A0FF771740A53614EDF23E959812B93ED2AFBE32A
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

712336

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_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

d3d11

D3D11CreateDevice

dwmapi

DwmSetWindowAttribute

dcomp

DCompositionCreateDevice

winmm

waveOutPrepareHeader waveOutGetPosition waveOutPause waveOutWrite waveOutSetVolume waveOutUnprepareHeader waveOutClose waveOutRestart waveOutReset waveOutOpen

mfplat

MFTEnumEx MFShutdown MFCreateSample MFCreateMediaType MFCreateAlignedMemoryBuffer MFCreateMemoryBuffer MFStartup

ole32

CoInitializeEx CoTaskMemFree CoUninitialize CoCreateGuid

kernel32

EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetLocaleInfoW LCMapStringW CompareStringW VirtualProtect HeapAlloc HeapFree GetConsoleOutputCP FlushFileBuffers GetFileType ReadConsoleW GetConsoleMode CreateDirectoryW ReadFile GetVolumeInformationW GetFileSizeEx GetCommandLineW GetCurrentProcess WriteFile TerminateProcess RemoveDirectoryW GetModuleFileNameW SetEnvironmentVariableW GetEnvironmentVariableW GetTempPathW WaitForSingleObject CreateFileW GetFileAttributesW GetSystemDirectoryW Sleep GetTickCount64 GetLastError GetFileAttributesExW QueryPerformanceFrequency DeleteFileW CloseHandle SetCurrentDirectoryW GetProcAddress LocalFree MoveFileExW GetCurrentProcessId CreateProcessW GetModuleHandleW WideCharToMultiByte GetTempFileNameW GetSystemTimeAsFileTime QueryPerformanceCounter GetTickCount SetDllDirectoryW LoadLibraryExW GetExitCodeProcess OutputDebugStringA MultiByteToWideChar GlobalAlloc GlobalFree GlobalLock GlobalUnlock GetModuleHandleA GetLocaleInfoA LoadLibraryA IsDBCSLeadByte VerSetConditionMask GetTimeZoneInformation SetFilePointerEx UnhandledExceptionFilter IsDebuggerPresent RtlVirtualUnwind RtlCaptureContext GetStdHandle ExitProcess IsProcessorFeaturePresent GetModuleHandleExW FreeLibraryAndExitThread ExitThread CreateThread FlsFree FlsSetValue FlsGetValue FlsAlloc SetLastError RaiseException RtlPcToFileHeader RtlUnwindEx RtlLookupFunctionEntry InitializeSListHead GetStartupInfoW SetUnhandledExceptionFilter SleepConditionVariableSRW WakeAllConditionVariable GetCPInfo GetStringTypeW LCMapStringEx DecodePointer EncodePointer DeleteCriticalSection InitializeCriticalSectionEx LeaveCriticalSection EnterCriticalSection GetCurrentThreadId AcquireSRWLockExclusive ReleaseSRWLockExclusive GetFileInformationByHandleEx AreFileApisANSI CreateFile2 SetFileInformationByHandle GetFullPathNameW FindNextFileW FindFirstFileExW FindFirstFileW FindClose GetLocaleInfoEx FormatMessageA IsValidCodePage RtlUnwind GetACP GetOEMCP GetCommandLineA GetEnvironmentStringsW FreeEnvironmentStringsW GetProcessHeap SetStdHandle HeapReAlloc HeapSize WriteConsoleW SetEndOfFile FreeLibrary

user32

UpdateWindow SystemParametersInfoW PostQuitMessage GetClientRect GetClassNameW LoadCursorW GetDpiForSystem EnumWindows PeekMessageW DispatchMessageW ShowWindow RegisterClassExW UnregisterClassW GetSystemMetrics CreateWindowExW SetWindowRgn MessageBoxW SetWindowPos IsWindowVisible DestroyWindow GetWindowRect SetProcessDpiAwarenessContext LoadImageW GetCursorPos GetWindowTextW TranslateMessage PostMessageW GetWindowLongW AdjustWindowRectEx GetKeyState GetMessageExtraInfo SetPropA GetDC MonitorFromWindow SetWindowLongPtrW EnumDisplayMonitors ScreenToClient WindowFromPoint GetCapture GetMonitorInfoW ClientToScreen IsChild TrackMouseEvent GetKeyboardLayout GetForegroundWindow GetPropA SetLayeredWindowAttributes SetFocus BringWindowToTop SetCapture SetCursor SetWindowLongW IsWindowUnicode ReleaseCapture SetForegroundWindow IsIconic DefWindowProcW ReleaseDC OpenClipboard CloseClipboard EmptyClipboard GetClipboardData SetClipboardData GetWindowThreadProcessId SetCursorPos

gdi32

CreateRoundRectRgn GetDeviceCaps

advapi32

RegQueryValueExW RegCloseKey RegOpenKeyExW

shell32

CommandLineToArgvW SHFileOperationW ShellExecuteW

bcrypt

BCryptDecrypt BCryptDestroyKey BCryptGenerateSymmetricKey BCryptCreateHash BCryptSetProperty BCryptHashData BCryptDestroyHash BCryptCloseAlgorithmProvider BCryptFinishHash BCryptOpenAlgorithmProvider

ncrypt

NCryptOpenKey NCryptOpenStorageProvider NCryptSignHash NCryptExportKey NCryptFinalizeKey NCryptFreeObject NCryptSetProperty NCryptDecrypt NCryptCreatePersistedKey

winhttp

WinHttpConnect WinHttpQueryDataAvailable WinHttpSetTimeouts WinHttpReceiveResponse WinHttpOpen WinHttpQueryHeaders WinHttpReadData WinHttpOpenRequest WinHttpCloseHandle WinHttpSendRequest

imm32

ImmSetCompositionWindow ImmReleaseContext ImmGetContext ImmSetCandidateWindow

d3dcompiler_47

D3DCompile

Name

.text

Size

895KB

Virtual Size

895KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

304KB

Virtual Size

303KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

7KB

Virtual Size

13KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

36KB

Virtual Size

36KB

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

.vmp0

Size

2.4MB

Virtual Size

2.4MB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

37KB

Virtual Size

37KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

lumka.exe

d3d11

dwmapi

dcomp

winmm

mfplat

ole32

kernel32

user32

gdi32

advapi32

shell32

bcrypt

ncrypt

winhttp

imm32

d3dcompiler_47

generic