splwow64[.]exe

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General

Target

splwow64.exe
Size

188KB
MD5

8264f2f08dddeeeb56b8810eabc6cf84
SHA1

bfb71c443e5c50dd148d3411586f6d1800eee4cb
SHA256

542d8e69ee7a69c2417e496638573b9c1a931d95012ff24dd63c84575f699caf
SHA512

2bba2a772dc32d8fbbc0beec6dda694c076bebc1eb7b367ee4b64778b07261743cb4df05dfdb91dcba6606e1a3e182c9cec5b27d2139f011e97855215260e577
SSDEEP

3072:7v2kW9x6n3AlDrH0HJVDyKlkKqFP/fF9HQbPRyZ2pPTJ:qkqx6n3AVrmnDyKly8AZ2

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
splwow64.exe

Files

splwow64.exe
.exe windows x64

667fd80c4ea4fc599f77be2902ac98d1

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

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

AttachThreadInput
EnumWindows
GetWindowThreadProcessId
IsWindow
GetGUIThreadInfo
EnumChildWindows

msvcrt

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

ntdll

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

Sections

.text
Size: 80KB - Virtual size: 77KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 28KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 4KB - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 60KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 856B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

667fd80c4ea4fc599f77be2902ac98d1

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

user32

msvcrt

winspool.drv

rpcrt4

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

ntdll

Sections

.text Size: 80KB - Virtual size: 77KB

.rdata Size: 28KB - Virtual size: 24KB

.data Size: 4KB - Virtual size: 3KB

.pdata Size: 4KB - Virtual size: 3KB

.didat Size: 4KB - Virtual size: 56B

.rsrc Size: 60KB - Virtual size: 57KB

.reloc Size: 4KB - Virtual size: 856B

.text
Size: 80KB - Virtual size: 77KB

.rdata
Size: 28KB - Virtual size: 24KB

.data
Size: 4KB - Virtual size: 3KB

.pdata
Size: 4KB - Virtual size: 3KB

.didat
Size: 4KB - Virtual size: 56B

.rsrc
Size: 60KB - Virtual size: 57KB

.reloc
Size: 4KB - Virtual size: 856B