winmm[.]dll | Triage

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General

Target

winmm.dll
Size

512KB
MD5

e59aac558d9f9c5d1312ac24d09c51d5
SHA1

2f11c4b00f5f92d4466348f9501aa657c9bf6fa7
SHA256

ba37009eef6c041bc6d0a271c13679fb9e14a005bd7e038cee596cd4064cf8b3
SHA512

1c3b357074d62d5ca11c92d71ffdacb4a7e3d6fb17cbd4b489e5bea0032cea43650a6809388e98e4b98256b477c6b5dbd8fd2c7f4e3e08af00ef68e0ed4406d0
SSDEEP

12288:XQxOD9ZC0WKOy8zMtJKpBmpMgBNwQuQmMzWq0hNwnoAZwl:XQxOD9ZFKpB+N7JmMzWq0hNwnBZ

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winmm.dll

Files

winmm.dll
.dll windows:6 windows x64 arch:x64

d87c96e86984e394d8b76e8b7350cb52

Headers

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

Imports

kernel32

GetModuleFileNameW
GetSystemDirectoryW
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
GetDateFormatW
GetTimeFormatW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
ReadFile
GetTimeZoneInformation
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
GetProcessHeap
SetStdHandle
ReadConsoleW
CreateFileW
RtlUnwind

user32

MessageBoxA
MessageBoxW

Exports

Exports

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

Sections

.text
Size: 372KB - Virtual size: 372KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 108KB - Virtual size: 107KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 8KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 17KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1024B - Virtual size: 648B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

d87c96e86984e394d8b76e8b7350cb52

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

Exports

Exports

Sections

.text Size: 372KB - Virtual size: 372KB

.rdata Size: 108KB - Virtual size: 107KB

.data Size: 8KB - Virtual size: 15KB

.pdata Size: 17KB - Virtual size: 16KB

_RDATA Size: 512B - Virtual size: 348B

.rsrc Size: 1024B - Virtual size: 648B

.reloc Size: 4KB - Virtual size: 3KB

.text
Size: 372KB - Virtual size: 372KB

.rdata
Size: 108KB - Virtual size: 107KB

.data
Size: 8KB - Virtual size: 15KB

.pdata
Size: 17KB - Virtual size: 16KB

_RDATA
Size: 512B - Virtual size: 348B

.rsrc
Size: 1024B - Virtual size: 648B

.reloc
Size: 4KB - Virtual size: 3KB