DWrite[.]dll | Triage

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General

Target

DWrite.dll
Size

2.6MB
MD5

a60eb4f9a9fa013d5b8e312e787e8f28
SHA1

c064762641ae84db8d9e0df0b3f18fda8c6804f8
SHA256

0fb7631def4b94f00b1bcaeca4bc83188ca4c4133856e1a0cc0744c0abed5c23
SHA512

c61d664c75f7773e64907353c6ca76d8c563a8d67a5cdcc6ce3511d82fe9607019199ab0c73162f7627ed3066afe7f4557f458f154ae1a22bc2df6ef2c00572f
SSDEEP

49152:zZpgZ2R5F9ouXM8adwT5VpBYOImH6w765h0X:v78uc8ayZBY8R

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

85646bdcb657407f69461a7c95407dc9

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

_onexit
?terminate@@YAXXZ
_lock
??1type_info@@UAE@XZ
_initterm
_except_handler4_common
memcmp
free
floor
_amsg_exit
_XcptFilter
ceil
__dllonexit
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
malloc
_CIatan2
__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
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
_unlock
memset

ntdll

NtClose
AlpcGetMessageAttribute
AlpcInitializeMessageAttribute
NtAlpcSendWaitReceivePort
NtAlpcConnectPort
NtSetInformationThread
NtQueryInformationThread
RtlCaptureStackBackTrace
RtlInitUnicodeString

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

SizeofResource
GetProcAddress
GetModuleHandleW
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

GetCurrentThread
TerminateProcess
GetCurrentThreadId
GetCurrentProcessId
GetCurrentProcess
CreateThread

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

GetSystemTimeAsFileTime
GetSystemTime
GetSystemWindowsDirectoryW
GetTickCount
GetTickCount64
GetSystemInfo

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

SetLastError
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RaiseException
SetErrorMode
GetLastError

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

GetLocaleInfoEx
GetUserDefaultLCID
GetACP
LCMapStringW
LocaleNameToLCID
GetSystemDefaultLCID
FormatMessageW

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

RegGetValueW
RegNotifyChangeKeyValue
RegEnumKeyExW
RegEnumValueW
RegQueryInfoKeyW
RegCloseKey
RegQueryValueExW
RegOpenKeyExW

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

FindFirstFileW
FindCloseChangeNotification
FindNextChangeNotification
FindFirstChangeNotificationW
ReadFile
CreateFileW
FindClose
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

GetProcessHeap
HeapFree
HeapAlloc

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
WaitForThreadpoolTimerCallbacks
CreateThreadpoolTimer
CloseThreadpoolTimer

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

CreateFileMappingW
MapViewOfFileEx
UnmapViewOfFile
VirtualQuery
VirtualFree
VirtualAlloc

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

EventUnregister
EventWriteTransfer
EventRegister
EventSetInformation

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

ImpersonateLoggedOnUser
CreateWellKnownSid
RevertToSelf

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

FileTimeToSystemTime

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

WideCharToMultiByte
MultiByteToWideChar
CompareStringOrdinal
CompareStringW

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: 2.2MB - Virtual size: 2.2MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 32KB

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: 264B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 264KB - Virtual size: 263KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 57KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

85646bdcb657407f69461a7c95407dc9

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: 2.2MB - Virtual size: 2.2MB

.data Size: 2KB - Virtual size: 32KB

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

.didat Size: 512B - Virtual size: 264B

.rsrc Size: 264KB - Virtual size: 263KB

.reloc Size: 57KB - Virtual size: 57KB

.text
Size: 2.2MB - Virtual size: 2.2MB

.data
Size: 2KB - Virtual size: 32KB

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

.didat
Size: 512B - Virtual size: 264B

.rsrc
Size: 264KB - Virtual size: 263KB

.reloc
Size: 57KB - Virtual size: 57KB