CortanaMapiHelper[.]dll

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General

Target

CortanaMapiHelper.dll
Size

188KB
MD5

f490fc70b42989f7f1ea016fabb806a8
SHA1

bc82923902b66ba489a4d98b75b6952222758f60
SHA256

4627edd3379b1c61e0465501b2fae36b3ef7cbd7587cce2554c44f2850aeb856
SHA512

10efe224d9211dca26fc472d25d10f774ade4bf278968d570f2dbc23794ca6741b8f20507c5ad8ddaecf6e2b9294f906696001e53d149f8aaac8c1a68a3c949d
SSDEEP

3072:1hQ5JrCBtiVZZ1ZiNfoBK3vmsRCkn1XKQ/zxaj9el/cF/eZahdYhT5DvguSgZPgT:1e5JPshf+s0kE9eJcJ8arYx6yPg

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
CortanaMapiHelper.dll

Files

CortanaMapiHelper.dll
.dll windows:10 windows x86 arch:x86

3652cbf433e3c1728680f0328abbbf20

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

CortanaMapiHelper.pdb

Imports

msvcrt

wcschr
wcsstr
_ltow_s
??_V@YAXPAX@Z
??0exception@@QAE@ABV0@@Z
??0exception@@QAE@XZ
memset
??1exception@@UAE@XZ
_vsnprintf_s
_wtol
_purecall
_vsnwprintf
towlower
wcsrchr
memmove
memcpy_s
_callnewh
_wtoi
??0exception@@QAE@ABQBD@Z
??0exception@@QAE@ABQBDH@Z
?what@exception@@UBEPBDXZ
_CxxThrowException
__CxxFrameHandler3
memcpy
??1type_info@@UAE@XZ
_except_handler4_common
_onexit
__dllonexit
_unlock
wcscpy_s
memmove_s
swprintf_s
??3@YAXPAX@Z
_lock
_initterm
malloc
free
_amsg_exit
_XcptFilter
_wcsupr_s
memcmp

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

WindowsDeleteString
WindowsGetStringRawBuffer
WindowsCreateString
WindowsIsStringEmpty
WindowsStringHasEmbeddedNull

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

EncodePointer
DecodePointer

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

RoOriginateErrorW
RoOriginateError

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

Sleep
AcquireSRWLockShared
LeaveCriticalSection
EnterCriticalSection
ReleaseSRWLockShared
CreateMutexExW
ReleaseSRWLockExclusive
OpenSemaphoreW
InitOnceComplete
WaitForSingleObjectEx
CreateEventW
InitializeCriticalSectionEx
ReleaseMutex
InitializeCriticalSection
CreateSemaphoreExW
DeleteCriticalSection
AcquireSRWLockExclusive
ReleaseSemaphore
SetEvent
WaitForSingleObject
InitOnceBeginInitialize

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

FreeLibrary
GetModuleHandleW
LoadLibraryExW
GetProcAddress
FindResourceExW
DisableThreadLibraryCalls
LoadResource
LockResource
GetModuleFileNameW
GetModuleFileNameA
GetModuleHandleExW
SizeofResource

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

QueryPerformanceCounter

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

GetCurrentThreadId
TerminateProcess
CreateThread
GetCurrentProcess
OpenProcessToken
GetCurrentProcessId

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

GetSystemDirectoryW
GetLocalTime
GetVersionExW
GetTickCount
GetSystemTimeAsFileTime
GetSystemTime

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

UnhandledExceptionFilter
GetLastError
SetUnhandledExceptionFilter
SetLastError
RaiseException

userdatalanguageutil

ConvertToWideStream

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

CoCreateInstance
CoInitializeEx
CoUninitialize
CoTaskMemFree
CoGetMalloc
CoTaskMemAlloc
CoWaitForMultipleHandles

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

HeapAlloc
HeapReAlloc
HeapDestroy
HeapSize
HeapFree
GetProcessHeap

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

GetUserDefaultLCID
FormatMessageW

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

EventRegister
EventUnregister
EventWriteTransfer
EventSetInformation
EventActivityIdControl

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

OutputDebugStringW

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

CloseHandle

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

LocalFree

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

MultiByteToWideChar
CompareStringW

oleaut32

SysAllocStringLen
SysFreeString

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

RegQueryInfoKeyW
RegEnumValueW
RegCloseKey
RegGetValueW
RegQueryValueExA
RegQueryValueExW
RegOpenKeyExW

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

GetTokenInformation

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

ConvertSidToStringSidW

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

PeekMessageW
DispatchMessageW
TranslateMessage

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

SystemTimeToTzSpecificLocalTime
GetTimeZoneInformation
GetDynamicTimeZoneInformation
SystemTimeToFileTime
FileTimeToSystemTime

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

ExpandEnvironmentStringsW

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

LoadLibraryA
LoadLibraryW

api-ms-win-core-registry-l2-2-0

RegEnumKeyW

Exports

Exports

DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject

Sections

.text
Size: 170KB - Virtual size: 169KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3652cbf433e3c1728680f0328abbbf20

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

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

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

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

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

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

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

userdatalanguageutil

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

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

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

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

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

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

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

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

oleaut32

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

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

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

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

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

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

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

api-ms-win-core-registry-l2-2-0

Exports

Exports

Sections

.text Size: 170KB - Virtual size: 169KB

.data Size: 1024B - Virtual size: 3KB

.idata Size: 6KB - Virtual size: 5KB

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

.reloc Size: 8KB - Virtual size: 8KB

.text
Size: 170KB - Virtual size: 169KB

.data
Size: 1024B - Virtual size: 3KB

.idata
Size: 6KB - Virtual size: 5KB

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

.reloc
Size: 8KB - Virtual size: 8KB