MSOpusDecoder[.]dll

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General

Target

MSOpusDecoder.dll
Size

132KB
MD5

6d90f45196dea3dbebcd61418e2abee1
SHA1

7515dc464c13b2f8f1df68c6201d9ba29713f6d0
SHA256

796a003198ee656e5ac8ce7461337ccd6a707a2f6224d824df915c3f70649fb9
SHA512

6c6e02f341f5b5452b546db450e37ae29a20c4fb74e92c151062d6869e55caca6cfe446cf3042d32e73d7655f5860f5946c413617d39114f0f0c108d78fcbf19
SSDEEP

3072:l5AZi+ojjrzpJ7tBtLYW+CGMWQSwT+Y4mhzSANFv:D0i9XZJ7hddnSwv4m4ANF

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
MSOpusDecoder.dll

Files

MSOpusDecoder.dll
.dll regsvr32 windows:10 windows x86 arch:x86

af3f1c9dc4e7c5a47a7e77b9d024f88f

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

MSOpusDecoder.pdb

Imports

msvcrt

wcscpy_s
memmove
wcscat_s
??1type_info@@UAE@XZ
_onexit
__dllonexit
_unlock
memcpy_s
memmove_s
free
wcsncpy_s
_callnewh
_lock
realloc
_purecall
_errno
_except_handler4_common
__CxxFrameHandler3
?terminate@@YAXXZ
_initterm
_XcptFilter
malloc
calloc
_amsg_exit
_CIatan2
_CIcos
_CIexp
_CIsqrt
_CxxThrowException
_ftol2_sse
floor
memcpy
memset

api-ms-win-core-synch-l1-1-0

LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSection
EnterCriticalSection

api-ms-win-core-com-l1-1-0

CoTaskMemRealloc
CoCreateInstance
CoCreateGuid
CoTaskMemFree
StringFromGUID2
CoTaskMemAlloc

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime
GetTickCount
GetTickCount64

oleaut32

VarUI4FromStr

api-ms-win-eventing-provider-l1-1-0

EventRegister
EventUnregister
EventWriteTransfer
EventSetInformation

api-ms-win-core-libraryloader-l1-2-0

LoadResource
FindResourceExW
GetProcAddress
GetModuleFileNameW
GetModuleHandleW
LoadLibraryExW
SizeofResource
DisableThreadLibraryCalls
FreeLibrary

api-ms-win-core-registry-l1-1-0

RegCreateKeyExW
RegEnumKeyExW
RegOpenKeyExW
RegCloseKey
RegQueryInfoKeyW
RegDeleteValueW
RegSetValueExW

api-ms-win-core-string-l2-1-0

CharNextW

api-ms-win-core-string-l1-1-0

MultiByteToWideChar

api-ms-win-core-errorhandling-l1-1-0

RaiseException
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetLastError

api-ms-win-core-delayload-l1-1-1

ResolveDelayLoadedAPI

api-ms-win-core-delayload-l1-1-0

DelayLoadFailureHook

api-ms-win-core-synch-l1-2-0

Sleep

api-ms-win-core-processthreads-l1-1-0

TerminateProcess
GetCurrentThreadId
GetCurrentProcessId
GetCurrentProcess

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-debug-l1-1-0

OutputDebugStringA

api-ms-win-core-string-obsolete-l1-1-0

lstrcmpiW

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 121KB - Virtual size: 121KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

af3f1c9dc4e7c5a47a7e77b9d024f88f

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

api-ms-win-core-synch-l1-1-0

api-ms-win-core-com-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

oleaut32

api-ms-win-eventing-provider-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-registry-l1-1-0

api-ms-win-core-string-l2-1-0

api-ms-win-core-string-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-delayload-l1-1-1

api-ms-win-core-delayload-l1-1-0

api-ms-win-core-synch-l1-2-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-profile-l1-1-0

api-ms-win-core-debug-l1-1-0

api-ms-win-core-string-obsolete-l1-1-0

Exports

Exports

Sections

.text Size: 121KB - Virtual size: 121KB

.data Size: 512B - Virtual size: 1KB

.idata Size: 3KB - Virtual size: 3KB

.didat Size: 512B - Virtual size: 16B

.rsrc Size: 2KB - Virtual size: 1KB

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

.text
Size: 121KB - Virtual size: 121KB

.data
Size: 512B - Virtual size: 1KB

.idata
Size: 3KB - Virtual size: 3KB

.didat
Size: 512B - Virtual size: 16B

.rsrc
Size: 2KB - Virtual size: 1KB

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