MSOpusDecoder[.]dll

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General

Target

MSOpusDecoder.dll
Size

139KB
MD5

13da0d3b7789c2d2e571c98849c65595
SHA1

faad342f3bc7ffdfdc301a9f913aee0cd4a135ee
SHA256

f7b1df5e2ffc62f039cc3f5f222d9b365522c9c5c92146cb82958ad9fd5f00f4
SHA512

90e2111550ca2ce2637b78e4fb5c692826142b0d4c7ee6189a61dff2732134801765ab12dec13b14a94ca2e37d133495ee7c8fb09f03039dfec872e38435c8ec
SSDEEP

3072:OImCQZ740m+av0jw7iISfCUzMbKlvOoo0QyDyoAWGDkADBuWdT0mn:PmCE7ih0K5rMQpOAWePDBZdT0m

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

225c979b6d6aa608c1a3c5b7b9649009

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
_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: 128KB - Virtual size: 127KB

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

225c979b6d6aa608c1a3c5b7b9649009

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: 128KB - Virtual size: 127KB

.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: 128KB - Virtual size: 127KB

.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