DWrite[.]dll | Triage

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General

Target

DWrite.dll
Size

1.9MB
MD5

89552526dafb7265ca44cd08a7011b5a
SHA1

ac4107a035ed005f8eaefc9810843a1f57befb5a
SHA256

9263d30fd2b60f20ead720cdef8a9dd3a2e05d3c8eea301b099ca6381cf91ff8
SHA512

4af57f939db1a552a1941197cc103a08cda24013fa8289e7cbd3a3c0dddcd08cbd32ae11e5493e346f5641c727df6a7b7841bd379bfabdd36a85546237256722
SSDEEP

24576:6bcpciJjr/H1RruW5WB1rosL+kjKkdQO62897mGp/8bExz/DkAzRpoC+x4eHDbjh:6bCJjj+WkB1DLZdE2xSXRH0BDJj4OL/

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
DWrite.dll

Files

DWrite.dll
.dll windows:10 windows x86 arch:x86

a304c1ecfefbd3a520a9945e2188d759

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

DWrite.pdb

Imports

msvcrt

??0exception@@QAE@ABV0@@Z
??0exception@@QAE@ABQBDH@Z
??1exception@@UAE@XZ
floor
?what@exception@@UBEPBDXZ
_CxxThrowException
memcmp
_except_handler4_common
??1type_info@@UAE@XZ
_onexit
ceil
memcpy
_XcptFilter
calloc
_ultow_s
?terminate@@YAXXZ
wcsrchr
_wcsicmp
realloc
_libm_sse2_sqrt_precise
wcschr
iswalpha
wcsnlen
_ftol2
_libm_sse2_exp_precise
__dllonexit
_unlock
_amsg_exit
_lock
memmove
free
_libm_sse2_pow_precise
_callnewh
malloc
_purecall
??3@YAXPAX@Z
_initterm
_libm_sse2_log_precise
??0exception@@QAE@ABQBD@Z
__CxxFrameHandler3
abort
??_V@YAXPAX@Z
_itow_s
memset

ntdll

NtQueryInformationThread
RtlInitUnicodeString
NtClose
RtlCaptureStackBackTrace
NtSetInformationThread
AlpcGetMessageAttribute
AlpcInitializeMessageAttribute
NtAlpcSendWaitReceivePort
NtAlpcConnectPort

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

FreeLibrary
DisableThreadLibraryCalls
GetModuleHandleW
GetProcAddress
LoadResource
SizeofResource
FindResourceExW
LoadLibraryExW
GetModuleHandleExW
LockResource
FreeLibraryAndExitThread

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

WaitForMultipleObjectsEx
LeaveCriticalSection
SetEvent
CreateEventW
InitializeCriticalSection
OpenSemaphoreW
DeleteCriticalSection
ResetEvent
Sleep
EnterCriticalSection
WaitForSingleObjectEx

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

CloseHandle

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

RegCloseKey
RegGetValueW
RegOpenKeyExW
RegNotifyChangeKeyValue
RegQueryValueExW
RegEnumValueW

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

QueryPerformanceCounter

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

CreateThread
GetCurrentThreadId
GetCurrentProcess
TerminateProcess
GetCurrentThread
GetCurrentProcessId

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

GetSystemWindowsDirectoryW
GetTickCount
GetSystemInfo
GetSystemTimeAsFileTime
GetTickCount64

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

GetLastError
SetUnhandledExceptionFilter
RaiseException
UnhandledExceptionFilter
SetLastError
SetErrorMode

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

EventSetInformation
EventWriteTransfer
EventRegister
EventUnregister
EventWrite
EventEnabled

rpcrt4

UuidCreate

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

GetACP
LocaleNameToLCID
GetLocaleInfoEx
GetUserDefaultLCID
LCMapStringW
GetSystemDefaultLCID

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

MultiByteToWideChar
CompareStringW
WideCharToMultiByte
CompareStringOrdinal

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

FindNextChangeNotification
FindFirstChangeNotificationW
FindClose
FindFirstFileW
ReadFile
GetFileInformationByHandle
SetFileTime
CreateFileW
FindCloseChangeNotification

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

VirtualQuery
MapViewOfFileEx
UnmapViewOfFile
VirtualAlloc
VirtualFree
CreateFileMappingW

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

LCIDToLocaleName

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

DelayLoadFailureHook
ResolveDelayLoadedAPI

api-ms-win-security-base-l1-2-0

CreateWellKnownSid

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

OutputDebugStringA

Exports

Exports

DWriteCreateFactory

Sections

.text
Size: 1.6MB - Virtual size: 1.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 30KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 200B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 261KB - Virtual size: 261KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 41KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a304c1ecfefbd3a520a9945e2188d759

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-handle-l1-1-0

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

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

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

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

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

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

rpcrt4

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

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

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

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

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

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

api-ms-win-security-base-l1-2-0

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

Exports

Exports

Sections

.text Size: 1.6MB - Virtual size: 1.6MB

.data Size: 1KB - Virtual size: 30KB

.idata Size: 5KB - Virtual size: 4KB

.didat Size: 512B - Virtual size: 200B

.rsrc Size: 261KB - Virtual size: 261KB

.reloc Size: 41KB - Virtual size: 40KB

.text
Size: 1.6MB - Virtual size: 1.6MB

.data
Size: 1KB - Virtual size: 30KB

.idata
Size: 5KB - Virtual size: 4KB

.didat
Size: 512B - Virtual size: 200B

.rsrc
Size: 261KB - Virtual size: 261KB

.reloc
Size: 41KB - Virtual size: 40KB