winmm[.]dll | Triage™

General

Target
winmm.dll
Size 494KB
Sample260804-z8vrbaem7t
SHA256 cb8baaa2054a11628b96e474e1428a430c95321f8ac3b89764255cbd6628a9d6
MD5 67c049e74d242975ffd0dcab9bc3b041
SHA1 1f5b8e6dfa8e2132264a7dd1f66948a0948fe4c4
SHA512 f98d04258d3f77362a023278713a30c3cd4f8013adfcea5a26a548a6f95d0786da080a8fbffde40579bd783d818fd9c4f4714decbdc34f84bb1b10e5fbd0fe28
SSDEEP 6144:0lHx0Al1TCgUfptsdNqB9G03mKt/SI+vnYvvooI7IreqdDp8:0hx0AlYsOdKJYvvooI7uzdt8
TLSH
T1BEB48E19E66842B9F56BE138C9530A07E7B17849536097CF03E09BBA2F27BE0573E351
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winmm.dll

File Explorer

winmm.dll

.dll 494KB

winmm.dll

IMPHASH b4168ef134160d95b1dcadfa17c71569
SHA256 cb8baaa2054a11628b96e474e1428a430c95321f8ac3b89764255cbd6628a9d6
MD5 67c049e74d242975ffd0dcab9bc3b041
SHA1 1f5b8e6dfa8e2132264a7dd1f66948a0948fe4c4
SHA512 f98d04258d3f77362a023278713a30c3cd4f8013adfcea5a26a548a6f95d0786da080a8fbffde40579bd783d818fd9c4f4714decbdc34f84bb1b10e5fbd0fe28
SSDEEP 6144:0lHx0Al1TCgUfptsdNqB9G03mKt/SI+vnYvvooI7IreqdDp8:0hx0AlYsOdKJYvvooI7uzdt8
TLSH
T1BEB48E19E66842B9F56BE138C9530A07E7B17849536097CF03E09BBA2F27BE0573E351
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

6

Entry point

195604

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DLL

PDB paths

kernel32

GetModuleFileNameW GetSystemDirectoryW GetCommandLineA GetLastError LoadLibraryW GetProcAddress ExitProcess SetEndOfFile WriteConsoleW HeapSize MultiByteToWideChar GetStringTypeW WideCharToMultiByte EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection EncodePointer DecodePointer GetLocaleInfoEx LCMapStringEx CompareStringEx GetCPInfo HeapCreate VirtualProtect HeapFree GetCurrentProcess Thread32Next Thread32First GetCurrentThreadId SuspendThread ResumeThread CreateToolhelp32Snapshot Sleep HeapReAlloc CloseHandle HeapAlloc GetThreadContext GetCurrentProcessId GetModuleHandleW FlushInstructionCache SetThreadContext OpenThread VirtualFree VirtualAlloc GetSystemInfo VirtualQuery RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter TerminateProcess IsProcessorFeaturePresent IsDebuggerPresent GetStartupInfoW QueryPerformanceCounter GetSystemTimeAsFileTime InitializeSListHead RtlUnwindEx RtlPcToFileHeader RaiseException InterlockedFlushSList SetLastError InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree FreeLibrary LoadLibraryExW GetModuleHandleExW FlushFileBuffers WriteFile GetConsoleOutputCP GetConsoleMode GetFileSizeEx SetFilePointerEx GetStdHandle GetFileType FlsAlloc FlsGetValue FlsSetValue FlsFree GetDateFormatW GetTimeFormatW CompareStringW LCMapStringW GetLocaleInfoW IsValidLocale GetUserDefaultLCID EnumSystemLocalesW ReadFile GetTimeZoneInformation FindClose FindFirstFileExW FindNextFileW IsValidCodePage GetACP GetOEMCP GetCommandLineW GetEnvironmentStringsW FreeEnvironmentStringsW SetEnvironmentVariableW GetProcessHeap SetStdHandle ReadConsoleW CreateFileW RtlUnwind

user32

MessageBoxA MessageBoxW

CloseDriver DefDriverProc DriverCallback DrvGetModuleHandle GetDriverModuleHandle NotifyCallbackData OnlineFix OpenDriver PlaySound PlaySoundA PlaySoundW SendDriverMessage WOW32DriverCallback WOW32ResolveMultiMediaHandle WOWAppExit aux32Message auxGetDevCapsA auxGetDevCapsW auxGetNumDevs auxGetVolume auxOutMessage auxSetVolume joy32Message joyConfigChanged joyGetDevCapsA joyGetDevCapsW joyGetNumDevs joyGetPos joyGetPosEx joyGetThreshold joyReleaseCapture joySetCapture joySetThreshold mci32Message mciDriverNotify mciDriverYield mciExecute mciFreeCommandResource mciGetCreatorTask mciGetDeviceIDA mciGetDeviceIDFromElementIDA mciGetDeviceIDFromElementIDW mciGetDeviceIDW mciGetDriverData mciGetErrorStringA mciGetErrorStringW mciGetYieldProc mciLoadCommandResource mciSendCommandA mciSendCommandW mciSendStringA mciSendStringW mciSetDriverData mciSetYieldProc mid32Message midiConnect midiDisconnect midiInAddBuffer midiInClose midiInGetDevCapsA midiInGetDevCapsW midiInGetErrorTextA midiInGetErrorTextW midiInGetID midiInGetNumDevs midiInMessage midiInOpen midiInPrepareHeader midiInReset midiInStart midiInStop midiInUnprepareHeader midiOutCacheDrumPatches midiOutCachePatches midiOutClose midiOutGetDevCapsA midiOutGetDevCapsW midiOutGetErrorTextA midiOutGetErrorTextW midiOutGetID midiOutGetNumDevs midiOutGetVolume midiOutLongMsg midiOutMessage midiOutOpen midiOutPrepareHeader midiOutReset midiOutSetVolume midiOutShortMsg midiOutUnprepareHeader midiStreamClose midiStreamOpen midiStreamOut midiStreamPause midiStreamPosition midiStreamProperty midiStreamRestart midiStreamStop mixerClose mixerGetControlDetailsA mixerGetControlDetailsW mixerGetDevCapsA mixerGetDevCapsW mixerGetID mixerGetLineControlsA mixerGetLineControlsW mixerGetLineInfoA mixerGetLineInfoW mixerGetNumDevs mixerMessage mixerOpen mixerSetControlDetails mmDrvInstall mmGetCurrentTask mmTaskBlock mmTaskCreate mmTaskSignal mmTaskYield mmioAdvance mmioAscend mmioClose mmioCreateChunk mmioDescend mmioFlush mmioGetInfo mmioInstallIOProcA mmioInstallIOProcW mmioOpenA mmioOpenW mmioRead mmioRenameA mmioRenameW mmioSeek mmioSendMessage mmioSetBuffer mmioSetInfo mmioStringToFOURCCA mmioStringToFOURCCW mmioWrite mmsystemGetVersion mod32Message mxd32Message sndPlaySoundA sndPlaySoundW tid32Message timeBeginPeriod timeEndPeriod timeGetDevCaps timeGetSystemTime timeGetTime timeKillEvent timeSetEvent waveInAddBuffer waveInClose waveInGetDevCapsA waveInGetDevCapsW waveInGetErrorTextA waveInGetErrorTextW waveInGetID waveInGetNumDevs waveInGetPosition waveInMessage waveInOpen waveInPrepareHeader waveInReset waveInStart waveInStop waveInUnprepareHeader waveOutBreakLoop waveOutClose waveOutGetDevCapsA waveOutGetDevCapsW waveOutGetErrorTextA waveOutGetErrorTextW waveOutGetID waveOutGetNumDevs waveOutGetPitch waveOutGetPlaybackRate waveOutGetPosition waveOutGetVolume waveOutMessage waveOutOpen waveOutPause waveOutPrepareHeader waveOutReset waveOutRestart waveOutSetPitch waveOutSetPlaybackRate waveOutSetVolume waveOutUnprepareHeader waveOutWrite wid32Message wod32Message

Name

.text

Size

356KB

Virtual Size

355KB

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

8KB

Virtual Size

15KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

17KB

Virtual Size

17KB

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

.rsrc

Size

1024B

Virtual Size

648B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

4KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

File Explorer

winmm.dll

kernel32

user32

generic