biwinrt[.]dll | Triage

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General

Target

biwinrt.dll
Size

255KB
MD5

c619a5eb1b57d96b5396dee9d7565b9e
SHA1

63a8ed4ff8db302f364ae4847185160786557f12
SHA256

0f29fae36e850799efe4e44381840f0dee63f6592ae993fcda52df94c0d93615
SHA512

e0dc627a500af4850bc1fa363c6500d3e3c53e9b5f8206ccd1593c0926556d1ff8538c53144390cd70de004ddbaf874ff59d2f1dcc101342b8296e9f1b90457d
SSDEEP

3072:7lxN0SWSGwAamBRSsGuQeiMbiN1IH2nkUI9+DwbYL7Ad5zCK025bw8VI9kxaATSO:LmBYBVhL/psMfAVN01CLS

Score

1^/10

Malware Config

Signatures

Files

biwinrt.dll
.dll windows:10 windows x86 arch:x86

a6051a89155d8b7f5985043adfe2a85c

Code Sign

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3c
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

02/09/2021, 18:23

Not After

01/09/2022, 18:23

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

2e:c6:bf:01:97:a9:09:cd:d9:62:37:e1:11:8e:a8:e3:a3:cf:03:06:ef:80:44:b9:75:2d:44:da:29:1f:df:f6
Signer

Actual PE Digest

2e:c6:bf:01:97:a9:09:cd:d9:62:37:e1:11:8e:a8:e3:a3:cf:03:06:ef:80:44:b9:75:2d:44:da:29:1f:df:f6

Digest Algorithm

sha256

PE Digest Matches

true

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

biwinrt.pdb

Imports

msvcrt

_initterm
?terminate@@YAXXZ
_amsg_exit
??1type_info@@UAE@XZ
realloc
_except_handler4_common
malloc
free
_lock
memmove_s
__CxxFrameHandler3
__dllonexit
_XcptFilter
wcschr
toupper
?what@exception@@UBEPBDXZ
_callnewh
_CxxThrowException
_vsnprintf_s
_unlock
memmove
memcpy
??0exception@@QAE@ABV0@@Z
memcmp
_ftol2
??0exception@@QAE@XZ
??1exception@@UAE@XZ
_purecall
??3@YAXPAX@Z
memcpy_s
_vsnwprintf
??_V@YAXPAX@Z
_onexit
memset

ntdll

RtlCompareUnicodeString
RtlInitUnicodeString
NtQueryWnfStateData
RtlSubscribeWnfStateChangeNotification
RtlUnsubscribeWnfStateChangeNotification
WinSqmAddToStreamEx
RtlFreeHeap
RtlQueryPackageClaims
RtlAllocateHeap
RtlCompareMemory
RtlNtStatusToDosErrorNoTeb
RtlNtStatusToDosError
RtlRunOnceBeginInitialize
RtlRunOnceInitialize
RtlReportException
RtlRunOnceComplete
RtlCaptureContext
NtQueryInformationToken

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

GetModuleHandleExW
GetModuleHandleW
DisableThreadLibraryCalls
GetProcAddress
GetModuleFileNameA

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

Sleep
InitOnceExecuteOnce

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

CreateEventW
WaitForSingleObjectEx
CreateSemaphoreExW
AcquireSRWLockExclusive
ReleaseSemaphore
CreateMutexExW
AcquireSRWLockShared
WaitForSingleObject
ReleaseSRWLockShared
DeleteCriticalSection
ReleaseMutex
OpenSemaphoreW
InitializeSRWLock
ReleaseSRWLockExclusive
EnterCriticalSection
InitializeCriticalSectionEx
TryAcquireSRWLockExclusive
LeaveCriticalSection
SetEvent

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

HeapAlloc
HeapFree
GetProcessHeap

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

SetUnhandledExceptionFilter
GetLastError
RaiseException
UnhandledExceptionFilter
SetLastError

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

WindowsCreateString
WindowsDuplicateString
WindowsDeleteString
WindowsGetStringRawBuffer
WindowsStringHasEmbeddedNull
WindowsIsStringEmpty
WindowsCompareStringOrdinal
WindowsCreateStringReference

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

CoDecrementMTAUsage
CoCreateFreeThreadedMarshaler
CoGetApartmentType
CoUnmarshalInterface
CoTaskMemAlloc
CoTaskMemFree
CreateStreamOnHGlobal
CoGetClassObject
CoIncrementMTAUsage

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

DecodePointer
EncodePointer

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

GetTraceEnableLevel
RegisterTraceGuidsW
UnregisterTraceGuids
GetTraceEnableFlags
GetTraceLoggerHandle

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

TerminateProcess
GetCurrentProcess
GetCurrentProcessId
OpenProcessToken
GetCurrentThreadId

api-ms-win-core-winrt-error-l1-1-0

RoOriginateErrorW
RoTransformError
RoOriginateError
SetRestrictedErrorInfo

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

FormatMessageW

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

RoUninitialize
RoInitialize
RoGetActivationFactory
RoActivateInstance

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

OutputDebugStringW
DebugBreak
IsDebuggerPresent

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

CloseHandle

api-ms-win-core-winrt-error-l1-1-1

RoReportFailedDelegate
IsErrorPropagationEnabled
RoGetMatchingRestrictedErrorInfo

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

CloseThreadpoolTimer
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CreateThreadpoolTimer

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

GlobalAlloc
LocalAlloc
GlobalFree

oleaut32

SysFreeString

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

RoGetAgileReference

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

EventRegister
EventProviderEnabled
EventWriteTransfer
EventUnregister
EventSetInformation

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

QuirkIsEnabled

rpcrt4

RpcBindingBind
RpcBindingCreateW
RpcBindingFree
NdrAsyncClientCall2
RpcAsyncCompleteCall
RpcExceptionFilter
NdrClientCall4
RpcAsyncInitializeHandle

api-ms-win-service-management-l1-1-0

OpenSCManagerW
OpenServiceW
CloseServiceHandle

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

QueryPerformanceCounter

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

GetTickCount
GetSystemTimeAsFileTime

api-ms-win-service-private-l1-1-0

WaitServiceState

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

OpenProcess

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

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

Exports

Exports

BiRtCreateEventForApp
BiRtDeleteEventForApp
BiRtEnumerateBrokeredEvents
BiRtIsValidActivationTypeForEventType
BiRtQueryBrokerEventId
BiRtRegisterWorkItem
BiRtRegisterWorkItemClsid
DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject
DllMain

Sections

.text
Size: 218KB - Virtual size: 218KB

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: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 28B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 14KB - Virtual size: 14KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a6051a89155d8b7f5985043adfe2a85c

Code Sign

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3cCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

2e:c6:bf:01:97:a9:09:cd:d9:62:37:e1:11:8e:a8:e3:a3:cf:03:06:ef:80:44:b9:75:2d:44:da:29:1f:df:f6Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

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

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

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

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

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

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

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

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

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

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

api-ms-win-core-winrt-error-l1-1-0

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

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

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

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

api-ms-win-core-winrt-error-l1-1-1

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

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

oleaut32

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

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

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

rpcrt4

api-ms-win-service-management-l1-1-0

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

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

api-ms-win-service-private-l1-1-0

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

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

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

Exports

Exports

Sections

.text Size: 218KB - Virtual size: 218KB

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

.idata Size: 7KB - Virtual size: 6KB

.didat Size: 512B - Virtual size: 28B

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

.reloc Size: 14KB - Virtual size: 14KB

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3c
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

2e:c6:bf:01:97:a9:09:cd:d9:62:37:e1:11:8e:a8:e3:a3:cf:03:06:ef:80:44:b9:75:2d:44:da:29:1f:df:f6
Signer

.text
Size: 218KB - Virtual size: 218KB

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

.idata
Size: 7KB - Virtual size: 6KB

.didat
Size: 512B - Virtual size: 28B

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

.reloc
Size: 14KB - Virtual size: 14KB