MSOpusDecoder.pdb
Static task
static1
Behavioral task
behavioral1
Sample
MSOpusDecoder.dll
Resource
win10v2004-20240426-en
General
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Target
MSOpusDecoder.dll
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Size
135KB
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MD5
829887c425ca87dea1c0c76d85d1480c
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SHA1
d58b274bde88450486d9485f19b0e5d5370f5f2f
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SHA256
952cd6d7419d6a4a75e8b7a135b91ec4e58f6b036d1113d26035f2dc9285222d
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SHA512
4a48fdafecaf47d3ab508224c185ae91fad73f87e4ca645fa1a06524cf36c7037ee36a5039214c97adf6282bcdbb2c45a6e11c60288328569e431d9f99e75fb0
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SSDEEP
3072:It5AZh+LKz8AaDg+WL59wjfkPGY34mNPz+RXlaP:Ib0hSUuQuY34+IXlc
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource MSOpusDecoder.dll
Files
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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
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