winmm[.]dll | Triage

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General

Target

winmm.dll
Size

74KB
MD5

89a43e8c206f9dd19d6bbd83b4c94a5e
SHA1

1d816be542ffe70ec513f5bf3201815782f595fe
SHA256

62bc4e78f1d13b9cfab7db66d0cf906273a0486102661fd1086a0f960915d896
SHA512

10a974ef69a7873bdd65f41b184454b8a3dabef31e9b894ceecde5095ce8a53951cbbc69574ee2fff26ae91275580f2fc4250cc660a4f7346b34d15e5dc4f13b
SSDEEP

1536:Bsn9BhF0A5e76qpKZFy6k1I8AQAdQ8L3AqFQLGyxi/pznW5dVbdVbMN:BsnbhFg47y6k1rAQ04yy4xnW5dDK

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
winmm.dll

Files

winmm.dll
.dll windows x64

8b990a02d9eff7bd4479034e75c91c23

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

kernel32

DisableThreadLibraryCalls
LoadLibraryA
GetSystemDirectoryA
GetProcAddress
GetCommandLineW
GetTickCount
Sleep
ExitProcess
CreateThread
GetModuleFileNameW
LoadLibraryW
OutputDebugStringW
GetCurrentThreadId
FlsSetValue
GetCommandLineA
TerminateProcess
GetCurrentProcess
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsDebuggerPresent
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
EncodePointer
DecodePointer
FlsGetValue
FlsFree
SetLastError
GetLastError
FlsAlloc
HeapSize
GetModuleHandleW
RtlUnwindEx
HeapFree
SetHandleCount
GetStdHandle
GetFileType
GetStartupInfoA
DeleteCriticalSection
GetModuleFileNameA
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
WideCharToMultiByte
GetEnvironmentStringsW
HeapSetInformation
HeapCreate
HeapDestroy
QueryPerformanceCounter
GetCurrentProcessId
GetSystemTimeAsFileTime
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
LeaveCriticalSection
EnterCriticalSection
HeapAlloc
HeapReAlloc
WriteFile
InitializeCriticalSectionAndSpinCount
SetFilePointer
GetConsoleCP
GetConsoleMode
MultiByteToWideChar
LCMapStringA
LCMapStringW
GetStringTypeA
GetStringTypeW
GetLocaleInfoA
SetStdHandle
WriteConsoleA
GetConsoleOutputCP
WriteConsoleW
CreateFileA
CloseHandle
FlushFileBuffers

shlwapi

SHGetValueW
PathRemoveFileSpecW

user32

FindWindowW
RegisterWindowMessageW
SendMessageW

shell32

CommandLineToArgvW

Exports

Exports

CloseDriver
DefDriverProc
DriverCallback
DrvGetModuleHandle
GetDriverModuleHandle
OpenDriver
PlaySound
PlaySoundA
PlaySoundW
SendDriverMessage
WOWAppExit
auxGetDevCapsA
auxGetDevCapsW
auxGetNumDevs
auxGetVolume
auxOutMessage
auxSetVolume
joyConfigChanged
joyGetDevCapsA
joyGetDevCapsW
joyGetNumDevs
joyGetPos
joyGetPosEx
joyGetThreshold
joyReleaseCapture
joySetCapture
joySetThreshold
mciDriverNotify
mciDriverYield
mciExecute
mciFreeCommandResource
mciGetCreatorTask
mciGetDeviceIDA
mciGetDeviceIDFromElementIDA
mciGetDeviceIDFromElementIDW
mciGetDeviceIDW
mciGetDriverData
mciGetErrorStringA
mciGetErrorStringW
mciGetYieldProc
mciLoadCommandResource
mciSendCommandA
mciSendCommandW
mciSendStringA
mciSendStringW
mciSetDriverData
mciSetYieldProc
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
sndPlaySoundA
sndPlaySoundW
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

Sections

.text
Size: 44KB - Virtual size: 43KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 15KB - Virtual size: 14KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 9KB - Virtual size: 17KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 668B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8b990a02d9eff7bd4479034e75c91c23

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

shlwapi

user32

shell32

Exports

Exports

Sections

.text Size: 44KB - Virtual size: 43KB

.rdata Size: 15KB - Virtual size: 14KB

.data Size: 9KB - Virtual size: 17KB

.pdata Size: 2KB - Virtual size: 2KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 1024B - Virtual size: 668B

.text
Size: 44KB - Virtual size: 43KB

.rdata
Size: 15KB - Virtual size: 14KB

.data
Size: 9KB - Virtual size: 17KB

.pdata
Size: 2KB - Virtual size: 2KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 1024B - Virtual size: 668B