winmm[.]dll | Triage

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General

Target

winmm.dll
Size

672KB
MD5

dd109c7b4014fc2ecdc75123651b459d
SHA1

1daa003d9a3589faffd4206b3a39e1b70813a55d
SHA256

46c08aad6543dbc9ccbbff94f7b419220737df3e5862741bc474e2689d121f48
SHA512

34206fd3d1db15d94ce37589630e3ea05617dc20e00322e3b79fc18714423a213a58b90e514a418343926fa624a1a86302ef394fbab342e1442a5a70c633c3eb
SSDEEP

12288:YyCnpDMBSTNbBdQrJwuEoxqwZ2YK8F40kn0MCaTKhLFuoY9jmY3QvQi6P3sP1:YlnJpbBdQrZNxqbYzF4AMrTcF49jcaPo

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

591d9f81f0f77122b732e514dbb50ef1

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

GetModuleFileNameA
WriteProcessMemory
GetCurrentThreadId
lstrcatA
GetModuleHandleA
OpenProcess
DisableThreadLibraryCalls
GetCurrentThread
GetSystemDirectoryA
LoadLibraryA
CloseHandle
LoadLibraryW
CreateThread
GetProcAddress
ExitProcess
ReadProcessMemory
GetCurrentProcessId
FreeLibrary
lstrcmpiA
CreateFileW
SetFilePointerEx
GetConsoleMode
GetConsoleOutputCP
WriteFile
QueryPerformanceCounter
GetSystemTimeAsFileTime
InitializeSListHead
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
IsProcessorFeaturePresent
GetModuleHandleW
GetLastError
GetCurrentProcess
SuspendThread
ResumeThread
GetThreadContext
SetThreadContext
FlushInstructionCache
VirtualAlloc
VirtualProtect
VirtualFree
VirtualQuery
SetLastError
LoadLibraryExW
RtlUnwindEx
InterlockedFlushSList
RtlPcToFileHeader
RaiseException
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
EncodePointer
TerminateProcess
GetModuleHandleExW
GetModuleFileNameW
HeapFree
HeapAlloc
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
LCMapStringW
GetProcessHeap
GetStdHandle
GetFileType
GetStringTypeW
HeapSize
HeapReAlloc
SetStdHandle
FlushFileBuffers
WriteConsoleW

user32

MessageBoxA
wsprintfA

shlwapi

PathStripPathA

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: 76KB - Virtual size: 76KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 48KB - Virtual size: 48KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.detourc
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.detourd
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 248B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 528KB - Virtual size: 2.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

591d9f81f0f77122b732e514dbb50ef1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

shlwapi

Exports

Exports

Sections

.text Size: 76KB - Virtual size: 76KB

.rdata Size: 48KB - Virtual size: 48KB

.data Size: 3KB - Virtual size: 8KB

.pdata Size: 5KB - Virtual size: 4KB

.detourc Size: 8KB - Virtual size: 8KB

.detourd Size: 512B - Virtual size: 24B

_RDATA Size: 512B - Virtual size: 348B

.rsrc Size: 512B - Virtual size: 248B

.reloc Size: 528KB - Virtual size: 2.3MB

.text
Size: 76KB - Virtual size: 76KB

.rdata
Size: 48KB - Virtual size: 48KB

.data
Size: 3KB - Virtual size: 8KB

.pdata
Size: 5KB - Virtual size: 4KB

.detourc
Size: 8KB - Virtual size: 8KB

.detourd
Size: 512B - Virtual size: 24B

_RDATA
Size: 512B - Virtual size: 348B

.rsrc
Size: 512B - Virtual size: 248B

.reloc
Size: 528KB - Virtual size: 2.3MB