MSOpusDecoder[.]dll

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General

Target

MSOpusDecoder.dll
Size

142KB
MD5

f0dac8bf6f0b9ace74f43510b4018aff
SHA1

bc4df3d5b867f4a6f180da7a949e872ef10576f2
SHA256

799d45809b4498bd9c69edfadd9817cc7e0a22fa8a1be716ddd6a140c78fd5f8
SHA512

2b1fbbb147a94614a67f238a5bd2a2c444292750f8a949abb5c148c1a23fdbf6ce3bab3807e8eff1c677e90275d077b2f7dc3a3431cc80e548eebd91bc1e63b4
SSDEEP

3072:ByJBImCQZfwmd/mTIQm3uWLDc6pdqaPUjkclUG4D8Mn02y:ByJSmCEf1E9m+ypbVM7002

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: 131KB - Virtual size: 130KB

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: 131KB - Virtual size: 130KB

.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: 131KB - Virtual size: 130KB

.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