SMBHelperClass[.]dll

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General

Target

SMBHelperClass.dll
Size

83KB
MD5

95b4230d7f993d4716fc4f3ca120feb6
SHA1

0f5c81268f404b13b7a6e4e6f8e7bef238743acf
SHA256

c5400a5521df695934d20395dfd71dabdc11b8abba7e38185a2d8d6e88f66fb7
SHA512

ffd8b0f708105d1ecbcf18234fdab6a998c5c3536724f06487ace005cd74604a906d4efa5bd25388f540a3bcb7e6c00c21b5811ead6e705d479bc6f3b36127e0
SSDEEP

1536:jhp4vVHvVsThjFbKQad6rdeaiPrko7AZ0snzkc7TJiKCYrcKv+:stvVsTbbodGRDQmBrcKm

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

ffad46ce9eecbb95fae53f60350f9360

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

ntdll

NtFsControlFile
NtOpenFile
RtlInitUnicodeString
NtClose

kernel32

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

user32

LoadStringW
UnregisterClassA
CharNextW

advapi32

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

ole32

StringFromGUID2
CoTaskMemFree
CoInitializeEx
CoCreateInstance
CoTaskMemRealloc
CoTaskMemAlloc

oleaut32

LoadTypeLi
SysAllocString
SysStringLen
VarUI4FromStr
SysFreeString
RegisterTypeLi
UnRegisterTypeLi

mpr

WNetOpenEnumW
WNetCloseEnum
WNetGetUserW
WNetCancelConnection2W
WNetEnumResourceW

netapi32

NetShareEnum
NetApiBufferFree

wevtapi

EvtNext
EvtCreateRenderContext
EvtRender
EvtClose
EvtQuery

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 74KB - Virtual size: 73KB

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

.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

ffad46ce9eecbb95fae53f60350f9360

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

kernel32

user32

advapi32

ole32

oleaut32

mpr

netapi32

wevtapi

Exports

Exports

Sections

.text Size: 74KB - Virtual size: 73KB

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

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

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

.text
Size: 74KB - Virtual size: 73KB

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

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

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