MSOpusDecoder[.]dll

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General

Target

MSOpusDecoder.dll
Size

135KB
MD5

eaa7a2fe5af10b7c1ca1bc434109d271
SHA1

4634b249ab17559347dec84489f384eb26a452c2
SHA256

6eb8a3298a4e1ef0a22820de44707f7e97e251395343ea9db8d23f36ee7db361
SHA512

3a0e14169e58346b6a75575aa780c35d7f0a7ae4456c3c1c78ca4565858c558062de221ffbdcca50c5c5ee968483452e4d1c97428a41a3d2e949714788ff6d57
SSDEEP

3072:15AZI7i+3ZaWXpE8382SB/Y+wUakwcL/EmvvXlRq:z0IXpUT3wcLciXl

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

f2e1e60fa448da251816904cbf5729ee

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

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

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

RegQueryInfoKeyW
RegQueryValueExW
RegSetValueExW
RegEnumKeyExW
RegDeleteValueW
RegOpenKeyExW
RegCreateKeyExW
RegCloseKey

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

DeleteCriticalSection
InitializeCriticalSection
Sleep
EnterCriticalSection
LeaveCriticalSection

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

CoCreateInstance
StringFromGUID2
CoTaskMemAlloc
CoTaskMemFree
CoTaskMemRealloc
CoCreateGuid

api-ms-win-core-sysinfo-l1-2-1

GetTickCount64
GetTickCount
GetSystemTimeAsFileTime

oleaut32

VarUI4FromStr

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

EventUnregister
EventRegister
EventWriteTransfer
EventSetInformation

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

GetModuleHandleW
GetProcAddress
LoadResource
FindResourceExW
FreeLibrary
LoadLibraryExW
DisableThreadLibraryCalls
GetModuleFileNameW
SizeofResource

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

CharNextW

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

MultiByteToWideChar

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

SetUnhandledExceptionFilter
UnhandledExceptionFilter
RaiseException
GetLastError

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

DelayLoadFailureHook
ResolveDelayLoadedAPI

api-ms-win-core-processthreads-l1-1-2

TerminateProcess
GetCurrentThreadId
GetCurrentProcessId
GetCurrentProcess

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

QueryPerformanceCounter

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

OutputDebugStringA

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

lstrcmpiW

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 124KB - Virtual size: 123KB

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: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

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: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f2e1e60fa448da251816904cbf5729ee

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

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

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

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

api-ms-win-core-sysinfo-l1-2-1

oleaut32

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

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

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

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

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

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

api-ms-win-core-processthreads-l1-1-2

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

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

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

Exports

Exports

Sections

.text Size: 124KB - Virtual size: 123KB

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

.idata Size: 3KB - Virtual size: 2KB

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

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

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

.text
Size: 124KB - Virtual size: 123KB

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

.idata
Size: 3KB - Virtual size: 2KB

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

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

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