DWrite[.]dll | Triage

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General

Target

DWrite.dll
Size

2.0MB
MD5

011ccd28940812619c049a1120d211cc
SHA1

2adfcf328637d8f8c9cd5fbb8c2c4039afc1804b
SHA256

6310f867e2a2020b2b754fff8771e1a8f2f5b442cc0a2a35b9225acccdb48bcc
SHA512

dc883635f1a5881e6a2d02b38bd1b32e0b4486f454fc794a3980bee4e5df6dacdf6fb563e32918d175229ca9b7c6a65866118b45e3eac5b5f330739521ea72e6
SSDEEP

49152:9TJlcIo6AoI9IY38OOAwI3P12ot5CnyPOOIcAUD:jCIozoIB8O5P12o3Cny

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

ca03118d935cbcbc4b1219f93966b713

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

__dllonexit
??1type_info@@UAE@XZ
_unlock
_lock
_initterm
_except_handler4_common
memcmp
free
floor
_amsg_exit
_XcptFilter
ceil
?terminate@@YAXXZ
memcpy
_libm_sse2_sqrt_precise
_CxxThrowException
_libm_sse2_pow_precise
?what@exception@@UBEPBDXZ
??1exception@@UAE@XZ
??0exception@@QAE@ABV0@@Z
??0exception@@QAE@ABQBDH@Z
_libm_sse2_log_precise
??0exception@@QAE@ABQBD@Z
??0exception@@QAE@XZ
_callnewh
_libm_sse2_log10_precise
memmove
_libm_sse2_exp_precise
_ftol2
_CIatan2
malloc
__CxxFrameHandler3
_purecall
memcpy_s
realloc
_wcsicmp
wcsrchr
wcsnlen
abort
strnlen
??_V@YAXPAX@Z
sprintf_s
_itow_s
_vsnwprintf
_vsnprintf_s
memmove_s
rand
calloc
iswalpha
wcschr
_ultow_s
_snprintf_s
wcstol
qsort
vsprintf_s
sscanf_s
sprintf
strcpy_s
strstr
strcat_s
isspace
strncmp
bsearch
strtod
strchr
strncpy_s
isalnum
_errno
strerror
??3@YAXPAX@Z
_onexit
memset

ntdll

NtClose
AlpcGetMessageAttribute
AlpcInitializeMessageAttribute
NtAlpcSendWaitReceivePort
NtAlpcConnectPort
NtSetInformationThread
NtQueryInformationThread
RtlCaptureStackBackTrace
RtlInitUnicodeString

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

GetModuleHandleW
GetProcAddress
SizeofResource
LoadResource
FreeLibraryAndExitThread
LockResource
GetModuleHandleExW
FindResourceExW
GetModuleFileNameA
DisableThreadLibraryCalls

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

Sleep

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

QueryPerformanceCounter

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

CreateThread
TerminateProcess
GetCurrentProcess
GetCurrentThreadId
GetCurrentProcessId
GetCurrentThread

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

GetSystemTimeAsFileTime
GetSystemTime
GetSystemWindowsDirectoryW
GetTickCount
GetTickCount64
GetSystemInfo

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

SetUnhandledExceptionFilter
RaiseException
UnhandledExceptionFilter
SetLastError
SetErrorMode
GetLastError

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

LocaleNameToLCID
GetACP
GetSystemDefaultLCID
LCMapStringW
FormatMessageW
GetLocaleInfoEx
GetUserDefaultLCID

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

RegEnumKeyExW
RegGetValueW
RegEnumValueW
RegNotifyChangeKeyValue
RegQueryInfoKeyW
RegCloseKey
RegQueryValueExW
RegOpenKeyExW

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

FindCloseChangeNotification
FindNextChangeNotification
FindFirstChangeNotificationW
FindFirstFileW
ReadFile
FindClose
CreateFileW
SetFileTime
GetFileInformationByHandle

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

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

rpcrt4

UuidCreate

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

HeapAlloc
GetProcessHeap
HeapFree

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

OutputDebugStringW
OutputDebugStringA
DebugBreak
IsDebuggerPresent

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

CloseHandle

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

SetThreadpoolTimer
CreateThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer

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

MapViewOfFileEx
CreateFileMappingW
VirtualAlloc
UnmapViewOfFile
VirtualQuery
VirtualFree

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

EventSetInformation
EventRegister
EventWriteTransfer
EventUnregister

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

CreateWellKnownSid
ImpersonateLoggedOnUser
RevertToSelf

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

FileTimeToSystemTime

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

WideCharToMultiByte
MultiByteToWideChar
CompareStringW
CompareStringOrdinal

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

LCIDToLocaleName

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

WerRegisterMemoryBlock

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

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

Exports

Exports

DWriteCreateFactory

Sections

.text
Size: 1.7MB - Virtual size: 1.7MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 31KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 288B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 271KB - Virtual size: 271KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 53KB - Virtual size: 53KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ca03118d935cbcbc4b1219f93966b713

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-profile-l1-1-0

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

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

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

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

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

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

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

rpcrt4

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

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

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

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

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

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 1.7MB - Virtual size: 1.7MB

.data Size: 2KB - Virtual size: 31KB

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

.didat Size: 512B - Virtual size: 288B

.rsrc Size: 271KB - Virtual size: 271KB

.reloc Size: 53KB - Virtual size: 53KB

.text
Size: 1.7MB - Virtual size: 1.7MB

.data
Size: 2KB - Virtual size: 31KB

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

.didat
Size: 512B - Virtual size: 288B

.rsrc
Size: 271KB - Virtual size: 271KB

.reloc
Size: 53KB - Virtual size: 53KB