dcomp[.]dll | Triage

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General

Target

dcomp.dll
Size

1.4MB
MD5

ba7f9eb78ecd2319e5f9633abb21a634
SHA1

8f946998cefab94b06c33b5b1d936106aef2e673
SHA256

802f4242cd8797fa8e5383fc1136c4c306e0d11d994de58109be688238ed390e
SHA512

4bb4362820d0f3b898420b7e69f403ba5868f6288e5864b6919ead8fa1366a9e092ac68d2786f8b1630d811bf9bbac130e2a6893aad1d50daca401cce5045048
SSDEEP

24576:lx0JicOJriygQN6HW9I7rPn3PQe78WlA0VTIOIPWbdkCPqJFB3:dcGDHQHgkP7+3HFB3

Score

1^/10

Malware Config

Signatures

Files

dcomp.dll
.dll windows:10 windows x86 arch:x86

8399f81fd41ff732bb18205ae423c522

Code Sign

33:00:00:04:60:cf:42:a9:12:31:5f:6f:b3:00:00:00:00:04:60
Certificate

Issuer

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

Not Before

16-11-2023 19:20

Not After

14-11-2024 19:20

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

5a:61:d9:32:79:92:af:a1:8d:39:5f:86:68:f4:d5:72:d9:90:90:a7:12:c8:2e:8a:e4:ad:a3:b2:ec:22:88:a0
Signer

Actual PE Digest

5a:61:d9:32:79:92:af:a1:8d:39:5f:86:68:f4:d5:72:d9:90:90:a7:12:c8:2e:8a:e4:ad:a3:b2:ec:22:88:a0

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

dcomp.pdb

Imports

win32u

NtDCompositionSynchronize
NtDCompositionGetBatchId
NtDCompositionSuspendAnimations
NtDCompositionSetChannelConnectionId
NtDCompositionAddCrossDeviceVisualChild
NtDCompositionRemoveCrossDeviceVisualChild
NtDCompositionSetDebugCounter
NtDCompositionTelemetryAnimationScenarioUnreference
NtDCompositionTelemetryAnimationScenarioReference
NtDCompositionTelemetryAnimationScenarioBegin
NtDCompositionCreateAndBindSharedSection
NtDCompositionTelemetrySetApplicationId
NtDCompositionTelemetryTouchInteractionEnd
NtDCompositionGetDeletedResources
NtDCompositionTelemetryTouchInteractionUpdate
NtDCompositionTelemetryTouchInteractionBegin
NtDCompositionSetChannelCommitCompletionEvent
NtDCompositionWaitForChannel
NtFlipObjectCreate
NtFlipObjectDisconnectEndpoint
NtFlipObjectQueryEndpointConnected
NtFlipObjectQueryBufferAvailableEvent
NtTokenManagerCreateFlipObjectTokenHandle
NtFlipObjectPresentCancel
NtFlipObjectEnablePresentStatisticsType
NtFlipObjectSetMaximumBackchannelQueueDepth
NtFlipObjectOpen
NtFlipObjectConsumerBeginProcessPresent
NtFlipObjectConsumerAcquirePresent
NtFlipObjectConsumerEndProcessPresent
NtFlipObjectConsumerAdjustUsageReference
NtTokenManagerCreateFlipObjectReturnTokenHandle
NtFlipObjectConsumerPostMessage
NtFlipObjectConsumerQueryBufferInfo
NtFlipObjectRemoveContent
NtFlipObjectSetContent
NtFlipObjectAddContent
NtGdiDdDDIGetSharedResourceAdapterLuidFlipManager
NtFlipObjectAddPoolBuffer
NtFlipObjectRemovePoolBuffer
NtFlipObjectQueryNextMessageToProducer
NtFlipObjectReadNextMessageToProducer
NtDCompositionReleaseAllResources
NtTokenManagerCreateCompositionTokenHandle
NtVisualCaptureBits
NtDCompositionCommitChannel
NtDCompositionProcessChannelBatchBuffer
NtDCompositionDestroyChannel
NtDCompositionCreateChannel
NtCreateCompositionInputSink
NtDCompositionCreateSharedResourceHandle
NtCreateCompositionSurfaceHandle
NtDCompositionEnableMMCSS
NtDCompositionGetFrameStatistics

msvcp_win

??1facet@locale@std@@MAE@XZ
??0_Lockit@std@@QAE@H@Z
??0_Locinfo@std@@QAE@PBD@Z
?c_str@?$_Yarn@D@std@@QBEPBDXZ
??1_Lockit@std@@QAE@XZ
??1_Locinfo@std@@QAE@XZ
?is@?$ctype@G@std@@QBE_NFG@Z
?_Getcat@?$ctype@G@std@@SAIPAPBVfacet@locale@2@PBV42@@Z
?_Incref@facet@locale@std@@UAEXXZ
?_Init@locale@std@@CAPAV_Locimp@12@_N@Z
?_Decref@facet@locale@std@@UAEPAV_Facet_base@3@XZ
??0facet@locale@std@@IAE@I@Z
?tolower@?$ctype@G@std@@QBEPBGPAGPBG@Z
?tolower@?$ctype@G@std@@QBEGG@Z
?id@?$ctype@G@std@@2V0locale@2@A
?_Getgloballocale@locale@std@@CAPAV_Locimp@12@XZ
??Bid@locale@std@@QAEIXZ
?id@?$collate@G@std@@2V0locale@2@A
_Wcsxfrm
_Wcscoll
?_Getcoll@_Locinfo@std@@QBE?AU_Collvec@@XZ

api-ms-win-crt-math-l1-1-0

_finite
_fdtest

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

memset
wcsnlen
wcsncmp

api-ms-win-crt-runtime-l1-1-0

_initterm_e
_initterm

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

_o__cexit
_o__CIsin
_o__CIsqrt
_o__configure_narrow_argv
_o__crt_atexit
_o__errno
_o__execute_onexit_table
_o__initialize_narrow_environment
_o__initialize_onexit_table
_o__invalid_parameter_noinfo
_o__invalid_parameter_noinfo_noreturn
_o__purecall
_o__register_onexit_function
_o__seh_filter_dll
memmove
_o__wcsicmp
_o__wcsicmp_l
_o__wtof
_o_abort
_o_ceil
_o_free
_o_malloc
_o_qsort
_o_realloc
_o_strncat_s
_o_towlower
_o_wcscpy_s
_o_wcsncpy_s
strchr
__CxxFrameHandler3
_except_handler4_common
_o___stdio_common_vsprintf_s
_o___stdio_common_vsnwprintf_s
_o___std_type_info_destroy_list
_o___stdio_common_vswprintf_s
_o___stdio_common_vswprintf
memcmp
memcpy

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

GetModuleFileNameA
GetProcAddress
GetModuleHandleW
GetModuleHandleExW
FreeLibrary

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

EnterCriticalSection
ReleaseSemaphore
LeaveCriticalSection
InitializeCriticalSectionEx
WaitForSingleObject
ReleaseMutex
ReleaseSRWLockExclusive
CreateMutexExW
AcquireSRWLockExclusive
WaitForSingleObjectEx
CreateSemaphoreExW
CreateEventExW
OpenSemaphoreW
InitializeSRWLock
InitializeCriticalSectionAndSpinCount
InitializeCriticalSection
ReleaseSRWLockShared
ResetEvent
AcquireSRWLockShared
CreateEventW
DeleteCriticalSection
SetEvent

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

HeapFree
HeapAlloc
GetProcessHeap
HeapReAlloc

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

SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetLastError
SetLastError
RaiseException

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

WaitForThreadpoolTimerCallbacks
SetThreadpoolTimer
CloseThreadpoolTimer
CreateThreadpoolTimer

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

OpenProcessToken
GetCurrentThread
TerminateProcess
GetCurrentProcessId
TerminateThread
GetCurrentProcess
GetCurrentThreadId

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

FormatMessageW

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

OutputDebugStringW
IsDebuggerPresent
DebugBreak

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

CloseHandle
DuplicateHandle

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

EventRegister
EventSetInformation
EventWriteTransfer
EventUnregister

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

GetTickCount
GetTickCount64
GetSystemTimeAsFileTime

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

VirtualFree
MapViewOfFile
VirtualAlloc
CreateFileMappingW

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

QueryPerformanceCounter
QueryPerformanceFrequency

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

CoGetInterfaceAndReleaseStream
CoReleaseMarshalData
CoTaskMemAlloc
CoTaskMemFree
StringFromGUID2
CoMarshalInterface
CreateStreamOnHGlobal
CoGetApartmentType
CoCreateFreeThreadedMarshaler
CoCreateInstance

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

GetNativeSystemInfo

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

WakeByAddressAll
InitOnceBeginInitialize
InitOnceComplete
InitOnceExecuteOnce
WaitOnAddress

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

RtlCaptureStackBackTrace

api-ms-win-core-errorhandling-l1-1-3

TerminateProcessOnMemoryExhaustion

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

RaiseFailFastException

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

RegCloseKey
RegQueryValueExW
RegOpenKeyExW

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

WindowsSubstringWithSpecifiedLength
WindowsDuplicateString
WindowsDeleteString
WindowsCreateStringReference
WindowsConcatString
WindowsCompareStringOrdinal
WindowsStringHasEmbeddedNull
WindowsIsStringEmpty
WindowsGetStringRawBuffer
WindowsCreateString
WindowsTrimStringStart
WindowsTrimStringEnd
WindowsGetStringLen

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

RoOriginateError
RoOriginateErrorW
GetRestrictedErrorInfo
SetRestrictedErrorInfo
RoTransformError

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

EncodePointer
DecodePointer

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

RoGetActivationFactory

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

RoGetAgileReference

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

IsErrorPropagationEnabled
RoReportFailedDelegate
RoGetMatchingRestrictedErrorInfo

api-ms-win-security-base-l1-1-0

AllocateLocallyUniqueId
GetTokenInformation

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

CompareStringOrdinal

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

OpenProcess
IsProcessorFeaturePresent

ntdll

RtlDestroyHeap
RtlCreateHeap
RtlAllocateHeap
RtlFreeHeap
DbgPrintEx
NtQuerySystemInformation
DbgPrompt
RtlDeleteElementGenericTable
RtlInsertElementGenericTable
RtlLookupElementGenericTable
RtlInitializeGenericTable
RtlEnumerateGenericTableWithoutSplaying
RtlQueryWnfStateData
RtlSubscribeWnfStateChangeNotification
RtlUnsubscribeWnfStateChangeNotification
RtlGetElementGenericTable
RtlNumberGenericTableElements
NtUnmapViewOfSection
NtQueryInformationProcess
RtlGetLastNtStatus

api-ms-win-appmodel-unlock-l1-1-0

IsDeveloperModeEnabled

api-ms-win-rtcore-ntuser-private-l1-1-0

DestroyDCompositionHwndTarget
CreateDCompositionHwndTarget

api-ms-win-rtcore-ntuser-private-l1-1-7

IsOneCoreTransformMode

api-ms-win-rtcore-ntuser-private-l1-1-9

ord2657

api-ms-win-stateseparation-helpers-l1-1-0

GetPersistedRegistryValueW

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

ApiSetQueryApiSetPresence

api-ms-win-core-version-l1-1-1

GetFileVersionInfoW
GetFileVersionInfoSizeW

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

VerQueryValueW

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

QueryFullProcessImageNameW

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

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

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

InitializeSListHead

Exports

Exports

DCompositionAttachMouseDragToHwnd
DCompositionAttachMouseWheelToHwnd
DCompositionCreateDevice
DCompositionCreateDevice2
DCompositionCreateDevice3
DCompositionCreateSurfaceHandle
DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject
DwmEnableMMCSS
DwmFlush
DwmpEnableDDASupport

Sections

.text
Size: 1.2MB - Virtual size: 1.2MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 15KB - Virtual size: 30KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 12KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 184B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 31KB - Virtual size: 31KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 73KB - Virtual size: 73KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8399f81fd41ff732bb18205ae423c522

Code Sign

33:00:00:04:60:cf:42:a9:12:31:5f:6f:b3:00:00:00:00:04:60Certificate

Extended Key Usages

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

Key Usages

5a:61:d9:32:79:92:af:a1:8d:39:5f:86:68:f4:d5:72:d9:90:90:a7:12:c8:2e:8a:e4:ad:a3:b2:ec:22:88:a0Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

win32u

msvcp_win

api-ms-win-crt-math-l1-1-0

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

api-ms-win-crt-runtime-l1-1-0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

api-ms-win-core-errorhandling-l1-1-3

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

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

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

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

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

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

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

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

api-ms-win-security-base-l1-1-0

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

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

ntdll

api-ms-win-appmodel-unlock-l1-1-0

api-ms-win-rtcore-ntuser-private-l1-1-0

api-ms-win-rtcore-ntuser-private-l1-1-7

api-ms-win-rtcore-ntuser-private-l1-1-9

api-ms-win-stateseparation-helpers-l1-1-0

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

api-ms-win-core-version-l1-1-1

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

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

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

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

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

Exports

Exports

Sections

.text Size: 1.2MB - Virtual size: 1.2MB

.data Size: 15KB - Virtual size: 30KB

.idata Size: 12KB - Virtual size: 12KB

.didat Size: 512B - Virtual size: 184B

.rsrc Size: 31KB - Virtual size: 31KB

.reloc Size: 73KB - Virtual size: 73KB

33:00:00:04:60:cf:42:a9:12:31:5f:6f:b3:00:00:00:00:04:60
Certificate

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

5a:61:d9:32:79:92:af:a1:8d:39:5f:86:68:f4:d5:72:d9:90:90:a7:12:c8:2e:8a:e4:ad:a3:b2:ec:22:88:a0
Signer

.text
Size: 1.2MB - Virtual size: 1.2MB

.data
Size: 15KB - Virtual size: 30KB

.idata
Size: 12KB - Virtual size: 12KB

.didat
Size: 512B - Virtual size: 184B

.rsrc
Size: 31KB - Virtual size: 31KB

.reloc
Size: 73KB - Virtual size: 73KB