CortanaMapiHelper[.]dll

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General

Target

CortanaMapiHelper.dll
Size

190KB
MD5

c49ac3f4c3d6c73a07128f29daff06f4
SHA1

621774471340e5a69668776dda13a39c2c180824
SHA256

df3d95094d7a77e580451ecf7ea87c11824496fcd383f86d88835f8ab98eb4ed
SHA512

3754289cf0d1a20108a2410b5ab4cfd5083d58c53a3afcf440c712d18f7d6a13a5f55e22368fe6d77101a7864cfa1e2ba0b67f555722da5bb0bea0141f1e0e74
SSDEEP

3072:e+4T5xuwftkIbXYCaR83+PPWx+U2qRYwXKszMgt1NiAjK+VSTIkCHTF0p0tbU9EQ:eRT3lkYYC+WJXXMgtxjxVSTKzF0pib1Q

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

5c8e9ad8f46b207fd9d483a3bd08e5a2

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

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

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

WindowsDeleteString
WindowsGetStringRawBuffer
WindowsCreateString
WindowsIsStringEmpty
WindowsStringHasEmbeddedNull

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

DecodePointer
EncodePointer

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

RoOriginateError
RoOriginateErrorW

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

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

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

LoadResource
DisableThreadLibraryCalls
GetProcAddress
GetModuleFileNameA
FreeLibrary
LockResource
GetModuleHandleW
FindResourceExW
GetModuleFileNameW
GetModuleHandleExW
SizeofResource

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

WakeAllConditionVariable
Sleep
InitOnceComplete
SleepConditionVariableSRW
InitOnceBeginInitialize

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

QueryPerformanceCounter

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

GetCurrentProcess
TerminateProcess
GetCurrentThreadId
GetCurrentProcessId
CreateThread
OpenProcessToken

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

GetVersionExW
GetTickCount
GetSystemDirectoryW
GetSystemTime
GetSystemTimeAsFileTime
GetLocalTime

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

UnhandledExceptionFilter
RaiseException
SetUnhandledExceptionFilter
SetLastError
GetLastError

userdatalanguageutil

ConvertToWideStream

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

CoCreateInstance
CoTaskMemAlloc
CoWaitForMultipleHandles
CoUninitialize
CoTaskMemFree
CoGetMalloc
CoInitializeEx

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

HeapReAlloc
GetProcessHeap
HeapAlloc
HeapSize
HeapDestroy
HeapFree

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

FormatMessageW
GetUserDefaultLCID

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

EventSetInformation
EventUnregister
EventRegister
EventActivityIdControl
EventWriteTransfer

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

IsDebuggerPresent
OutputDebugStringW
DebugBreak

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

SysFreeString
SysAllocStringLen

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

RegQueryInfoKeyW
RegOpenKeyExW
RegGetValueW
RegQueryValueExW
RegQueryValueExA
RegEnumValueW
RegCloseKey

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

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
FileTimeToSystemTime
GetTimeZoneInformation
GetDynamicTimeZoneInformation
SystemTimeToFileTime

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

ExpandEnvironmentStringsW

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

LoadLibraryA
LoadLibraryW

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

RegEnumKeyW

Exports

Exports

DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject

Sections

.text
Size: 172KB - Virtual size: 171KB

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

5c8e9ad8f46b207fd9d483a3bd08e5a2

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-l1-1-0

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

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

userdatalanguageutil

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

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

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

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

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

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-l1-1-0

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-l1-1-0

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

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

Exports

Exports

Sections

.text Size: 172KB - Virtual size: 171KB

.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: 172KB - Virtual size: 171KB

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

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

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

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