SMBHelperClass[.]dll

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General

Target

SMBHelperClass.dll
Size

84KB
MD5

82638a84831858953d293526454a5503
SHA1

39c0dfbac50eeea052e79ff0e7c5af6086711242
SHA256

e338caa0c96b3145066ef1732075294f1328c0e828c0d27dc5b1db5574a5d1dd
SHA512

41dd2ea7eb57222f2ecd3186f2518dbe98008a69a851fa0e4adcb8e6565f86a45f4b8e28e385503f967454ddfaa7ff656e1e547d22cccd3301a6ba79537e3a87
SSDEEP

1536:jXZ3b4aTCeVcBd4tND47yyAZe8S7SuIEfBtjPyhDX4P:jJ3s9eVcI0yyh17SxWPyhDX4P

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
SMBHelperClass.dll

Files

SMBHelperClass.dll
.dll regsvr32 windows:10 windows x86 arch:x86

761373b5c7adb9b543339f831d2a970d

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

SMBHelperClass.pdb

Imports

msvcrt

wcscpy_s
vswprintf_s
wcscat_s
towlower
_wcsnicmp
_wcsicmp
memset
_vscwprintf
??0exception@@QAE@XZ
memmove_s
??0exception@@QAE@ABQBD@Z
?what@exception@@UBEPBDXZ
??0exception@@QAE@ABV0@@Z
_purecall
_itow_s
??1exception@@UAE@XZ
memcpy_s
free
malloc
_callnewh
_CxxThrowException
__CxxFrameHandler3
_XcptFilter
_amsg_exit
_initterm
wcsncpy_s
??1type_info@@UAE@XZ
_errno
realloc
wcsncmp
_lock
_unlock
__dllonexit
_onexit
_except_handler4_common
_vsnwprintf
memcpy

ntdll

RtlInitUnicodeString
NtFsControlFile
NtClose
NtOpenFile

kernel32

OutputDebugStringA
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
Sleep
HeapDestroy
GetProcessHeap
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
SetThreadLocale
GetCurrentProcess
GetThreadLocale
ReleaseMutex
CreateMutexW
DisableThreadLibraryCalls
FreeLibrary
GetLastError
GetProcAddress
LoadLibraryExW
GetModuleHandleW
lstrcmpiW
LeaveCriticalSection
RaiseException
EnterCriticalSection
MultiByteToWideChar
SizeofResource
LoadResource
FindResourceExW
GetModuleFileNameW
InitializeCriticalSection
DeleteCriticalSection
CreateFileW
CloseHandle
GetCurrentThread
CreateThread
WaitForSingleObjectEx
WaitForSingleObject

user32

UnregisterClassA
LoadStringW
CharNextW

advapi32

GetTokenInformation
EventWriteTransfer
OpenThreadToken
EventActivityIdControl
ImpersonateLoggedOnUser
RegDeleteValueW
RegCreateKeyExW
RegSetValueExW
RegOpenKeyExW
RegEnumKeyExW
RegQueryInfoKeyW
RegCloseKey
LookupAccountSidW

oleaut32

SysFreeString
LoadTypeLi
SysAllocString
UnRegisterTypeLi
RegisterTypeLi
SysStringLen
VarUI4FromStr

mpr

WNetCancelConnection2W
WNetGetUserW
WNetCloseEnum
WNetOpenEnumW
WNetEnumResourceW

wevtapi

EvtRender
EvtQuery
EvtNext
EvtClose
EvtCreateRenderContext

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

CoTaskMemAlloc
CoInitializeEx
CoCreateInstance
CoTaskMemFree
CoTaskMemRealloc
StringFromGUID2

srvcli

NetShareEnum

netutils

NetApiBufferFree

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 71KB - Virtual size: 71KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

761373b5c7adb9b543339f831d2a970d

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

kernel32

user32

advapi32

oleaut32

mpr

wevtapi

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

srvcli

netutils

Exports

Exports

Sections

.text Size: 71KB - Virtual size: 71KB

.data Size: 512B - Virtual size: 1KB

.idata Size: 3KB - Virtual size: 3KB

.rsrc Size: 3KB - Virtual size: 2KB

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 71KB - Virtual size: 71KB

.data
Size: 512B - Virtual size: 1KB

.idata
Size: 3KB - Virtual size: 3KB

.rsrc
Size: 3KB - Virtual size: 2KB

.reloc
Size: 4KB - Virtual size: 4KB