splwow64[.]exe

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General

Target

splwow64.exe
Size

160KB
MD5

dfd799e78afaaa7ebc91794fdf086395
SHA1

8cc8124e39166b9feb45dcb818eaa24c78e7f6a5
SHA256

cf50db5a92f185b97e6e3f002dca0b079d75da6335c3e70b737059fa68784bf9
SHA512

e91ce925656d2ba99341d7d184c76e523b45b59fa9cd515fa7955bd2ac892e8ce4f6f4c69843a74e26a361a8aea6741c6427e4a2199dc3bd038487ab0e98987a
SSDEEP

3072:ktVg+PN4fGNKDNtLT2aobZWYXRY4CHQbPRyZ2pPTI:Ya+PN4fUKDNtX2aCvS8AZ2

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
splwow64.exe

Files

splwow64.exe
.exe windows:10 windows x64 arch:x64

0c613b55d7b5ccc10e4a17a05d719c8e

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

splwow64.pdb

Imports

advapi32

TraceMessage
RegOpenKeyW
RegQueryValueExW
RegCloseKey
GetTraceLoggerHandle
GetTraceEnableLevel
GetTraceEnableFlags
RegisterTraceGuidsW
UnregisterTraceGuids
ConvertStringSecurityDescriptorToSecurityDescriptorW
RevertToSelf
GetSidSubAuthority
GetSidSubAuthorityCount
OpenThreadToken
OpenProcessToken
ConvertSidToStringSidW
GetTokenInformation

kernel32

SystemTimeToFileTime
Sleep
GetProcAddress
SetLastError
FreeLibrary
LoadLibraryExW
CreateActCtxW
ActivateActCtx
GetFullPathNameW
GetSystemDirectoryW
GetFileAttributesW
DeactivateActCtx
ReleaseActCtx
LoadLibraryW
TlsAlloc
TlsFree
GetModuleHandleW
HeapSetInformation
SetErrorMode
GetErrorMode
TlsSetValue
HeapFree
GetProcessHeap
HeapAlloc
FormatMessageW
GetCurrentThreadId
GetModuleHandleExW
GetModuleFileNameA
DebugBreak
IsDebuggerPresent
OutputDebugStringW
EnterCriticalSection
ReleaseSRWLockExclusive
AcquireSRWLockShared
ReleaseSRWLockShared
ReleaseSemaphore
ReleaseMutex
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
WaitForSingleObjectEx
InitializeCriticalSectionEx
OpenSemaphoreW
CreateThreadpoolTimer
CreateFileW
OpenProcess
DuplicateHandle
GetCurrentProcess
CreateMutexExW
CreateSemaphoreExW
SetEvent
InitializeCriticalSectionAndSpinCount
CreateEventW
SetThreadPreferredUILanguages
LocalFree
VirtualQuery
GetSystemInfo
LoadLibraryExA
VirtualProtect
GetCurrentThread
GetTickCount
GetSystemTimeAsFileTime
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
WaitForSingleObject
CreateThread
ProcessIdToSessionId
GetSystemTime
GetCurrentProcessId
RaiseException
GetLastError
CloseHandle
DeleteCriticalSection
InitializeCriticalSection
LeaveCriticalSection
AcquireSRWLockExclusive

user32

GetGUIThreadInfo
IsWindow
AttachThreadInput
EnumWindows
EnumChildWindows
GetWindowThreadProcessId

msvcrt

memset
memcpy
?terminate@@YAXXZ
__CxxFrameHandler3
memcmp
__dllonexit
_unlock
_lock
_commode
_fmode
_initterm
__setusermatherr
_exit
exit
__set_app_type
__wgetmainargs
_amsg_exit
_XcptFilter
_callnewh
malloc
free
memmove_s
memcpy_s
_wtol
_wcsicmp
_vsnwprintf
_purecall
__C_specific_handler
_cexit
_onexit
sqrt

winspool.drv

ClosePrinter
GetPrinterDataW
GetPrintOutputInfo
GetPrinterDriverW
OpenPrinterW

rpcrt4

RpcRevertToSelf
RpcImpersonateClient
RpcAsyncCompleteCall
RpcMgmtStopServerListening
RpcServerListen
NdrAsyncServerCall
NdrServerCallAll
Ndr64AsyncServerCallAll
NdrServerCall2
RpcServerUseProtseqEpW
RpcServerRegisterIf3
RpcServerInqBindings
RpcBindingVectorFree
RpcServerRegisterAuthInfoW

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

CoCreateInstance
CoRegisterClassObject
CoRevokeClassObject
CoUninitialize
CoInitializeEx

ntdll

RtlLookupFunctionEntry
RtlCaptureContext
NtReplyPort
NtAlpcOpenSenderThread
NtClose
NtCompleteConnectPort
NtAcceptConnectPort
NtCreatePort
RtlInitUnicodeString
TpReleasePool
TpCallbackMayRunLong
TpSetWait
TpSimpleTryPost
TpAllocWork
TpPostWork
TpAllocWait
TpAllocTimer
TpSetTimer
TpAllocIoCompletion
TpStartAsyncIoOperation
TpAllocAlpcCompletion
TpWaitForWork
TpReleaseWork
TpWaitForWait
RtlVirtualUnwind
TpWaitForTimer
TpReleaseTimer
TpWaitForIoCompletion
TpReleaseIoCompletion
TpWaitForAlpcCompletion
TpReleaseAlpcCompletion
EtwTraceMessage
EtwEventEnabled
EtwEventWrite
NtReplyWaitReceivePort
RtlNtStatusToDosError
ZwQueryWnfStateData
TpReleaseWait

Sections

.text
Size: 72KB - Virtual size: 72KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 23KB - Virtual size: 22KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 57KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 840B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

0c613b55d7b5ccc10e4a17a05d719c8e

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

kernel32

user32

msvcrt

winspool.drv

rpcrt4

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

ntdll

Sections

.text Size: 72KB - Virtual size: 72KB

.rdata Size: 23KB - Virtual size: 22KB

.data Size: 1024B - Virtual size: 2KB

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

.didat Size: 512B - Virtual size: 56B

.rsrc Size: 57KB - Virtual size: 57KB

.reloc Size: 1024B - Virtual size: 840B

.text
Size: 72KB - Virtual size: 72KB

.rdata
Size: 23KB - Virtual size: 22KB

.data
Size: 1024B - Virtual size: 2KB

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

.didat
Size: 512B - Virtual size: 56B

.rsrc
Size: 57KB - Virtual size: 57KB

.reloc
Size: 1024B - Virtual size: 840B