SMBHelperClass[.]dll

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General

Target

SMBHelperClass.dll
Size

82KB
MD5

8509e6cd10af8cce368a425630c87821
SHA1

426dc49da3b27c1d02c687227fb004e1ae96cbfb
SHA256

ee13d489e6121d07b102663f3a353f78eda53d945c1121ca402a4b7a40e8ecc3
SHA512

cb981eda8a91a7023643627be4727c5fd4744a7ec8a0a44c4122fe977ac6c6297ec3183036c6808a80feef89b2d1b2cde95c09a7d1f800e43fa66ee4d93b29f3
SSDEEP

1536:PZ1NHEbLX6LkUmdRUlgWCErv6WKf4adtFVSVvVr57SBp:BTWHJMlgWCErvNyte5SB

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
SMBHelperClass.dll

Files

SMBHelperClass.dll
.dll regsvr32 windows:6 windows x86 arch:x86

e608da10bacf0d91218eccd7723591e7

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

SMBHelperClass.pdb

Imports

msvcrt

towlower
wcscat_s
wcscpy_s
vswprintf_s
_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
wcsncmp
_callnewh
_CxxThrowException
__CxxFrameHandler3
_XcptFilter
_amsg_exit
_initterm
??1type_info@@UAE@XZ
wcsncpy_s
_errno
realloc
_lock
_unlock
__dllonexit
_onexit
_except_handler4_common
_vsnwprintf
memcpy

ntdll

NtClose
NtFsControlFile
NtOpenFile
RtlInitUnicodeString

kernel32

OutputDebugStringA
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
Sleep
GetProcessHeap
HeapSize
HeapFree
HeapReAlloc
HeapAlloc
HeapDestroy
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

LoadStringW
UnregisterClassA
CharNextW

advapi32

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

ole32

CoInitializeEx
StringFromGUID2
CoTaskMemRealloc
CoTaskMemFree
CoCreateInstance
CoTaskMemAlloc

oleaut32

SysStringLen
RegisterTypeLi
VarUI4FromStr
SysFreeString
LoadTypeLi
UnRegisterTypeLi
SysAllocString

mpr

WNetCloseEnum
WNetOpenEnumW
WNetCancelConnection2W
WNetGetUserW
WNetEnumResourceW

netapi32

NetApiBufferFree
NetShareEnum

wevtapi

EvtRender
EvtCreateRenderContext
EvtNext
EvtQuery
EvtClose

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 67KB - Virtual size: 66KB

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: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e608da10bacf0d91218eccd7723591e7

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

kernel32

user32

advapi32

ole32

oleaut32

mpr

netapi32

wevtapi

Exports

Exports

Sections

.text Size: 67KB - Virtual size: 66KB

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

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

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

.reloc Size: 7KB - Virtual size: 6KB

.text
Size: 67KB - Virtual size: 66KB

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

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

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

.reloc
Size: 7KB - Virtual size: 6KB