userinit[.]exe

Sharing

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General

Target

userinit.exe
Size

156KB
MD5

27fd6cd54247a6584cf95e20f5f90a1c
SHA1

8d47bccf0e8533beb57c96c5162213b459355275
SHA256

826d15f6c397787e83a6c4fe465fc59733540b8ee8e75980a5f2221dc863858c
SHA512

ac5d88d147adda1c7cee30e334d384fe225f3091a10b78c3da4ddfe3594d901b00731253b10bd557112ec05583839a8968f0fdf0bf91f3a823c0b961b36b8975
SSDEEP

3072:rCXvzRSotxOrF8i6iCFuin/gTMNlshVNHk6kSNP:YvdJt2yiagTMrsPC6kU

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
userinit.exe

Files

userinit.exe
.exe windows:10 windows x64 arch:x64

831f09a183825fcd04b27df4080a7582

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

userinit.pdb

Imports

ntdll

RtlLookupFunctionEntry
RtlCaptureContext
RtlVirtualUnwind
NtQueryInformationProcess
RtlGetActiveConsoleId

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

CompareFileTime
GetFileAttributesExW

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

SearchPathW
SetEnvironmentVariableW
GetEnvironmentVariableW
ExpandEnvironmentStringsW

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

RegCreateKeyExW
RegQueryValueExW
RegGetValueW
RegOpenKeyExW
RegQueryInfoKeyW
RegCloseKey
RegOpenCurrentUser
RegEnumValueW

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

SetUnhandledExceptionFilter
UnhandledExceptionFilter
SetLastError
GetLastError

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

WideCharToMultiByte

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

SetThreadPriority
GetStartupInfoW
GetCurrentProcess
CreateProcessW
ProcessIdToSessionId
GetCurrentThread
CreateThread
TerminateProcess
GetCurrentProcessId
GetCurrentThreadId

api-ms-win-eventing-classicprovider-l1-1-0

RegisterTraceGuidsW
GetTraceEnableLevel
UnregisterTraceGuids
GetTraceLoggerHandle
GetTraceEnableFlags
TraceMessage

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

DeleteCriticalSection
CreateSemaphoreExW
ReleaseMutex
CreateMutexExW
ReleaseSemaphore
LeaveCriticalSection
ReleaseSRWLockShared
EnterCriticalSection
InitializeCriticalSectionAndSpinCount
OpenEventW
AcquireSRWLockShared
WaitForSingleObject
CreateEventExW
CreateEventW
WaitForSingleObjectEx
OpenSemaphoreW
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
ResetEvent
SetEvent
InitializeCriticalSectionEx

api-ms-win-core-heap-l2-1-0

LocalAlloc
LocalFree

api-ms-win-core-string-l2-1-0

CharNextW

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

GetSystemTimeAsFileTime
GetSystemDirectoryW

api-ms-win-core-synch-l1-2-0

Sleep
InitOnceBeginInitialize
InitOnceComplete

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

CloseHandle

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

HeapAlloc
GetProcessHeap
HeapFree
HeapSetInformation

api-ms-win-core-libraryloader-l1-2-0

GetProcAddress
GetModuleHandleExW
LoadLibraryExW
GetModuleHandleW
FreeLibrary
GetModuleFileNameA
LoadStringW
FindStringOrdinal
GetModuleFileNameW

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

CoTaskMemAlloc
CoTaskMemFree

api-ms-win-eventing-provider-l1-1-0

EventUnregister
EventRegister
EventWriteTransfer
EventSetInformation

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

K32GetModuleFileNameExW

api-ms-win-core-threadpool-l1-2-0

WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
SetThreadpoolTimer
CreateThreadpoolTimer

api-ms-win-core-processthreads-l1-1-1

OpenProcess
IsProcessorFeaturePresent

api-ms-win-core-localization-l1-2-0

FormatMessageW

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

IsDebuggerPresent
OutputDebugStringW
DebugBreak

api-ms-win-core-registry-l1-1-1

RegSetKeyValueW

api-ms-win-crt-runtime-l1-1-0

_c_exit
_initterm_e
_register_thread_local_exe_atexit_callback
_initterm

api-ms-win-crt-private-l1-1-0

wcsrchr
_o___p__commode
_o___std_exception_copy
_o___std_exception_destroy
_o___stdio_common_vswprintf
_o__cexit
_o__configthreadlocale
_o__configure_narrow_argv
_o__crt_atexit
_o__errno
_o__exit
_o__get_narrow_winmain_command_line
_o__initialize_narrow_environment
_o__initialize_onexit_table
_o__invalid_parameter_noinfo
__std_terminate
memmove
_o__purecall
__CxxFrameHandler4
_o__register_onexit_function
_o__seh_filter_exe
_o__set_app_type
_o__set_fmode
_o__set_new_mode
_o__wcsicmp
_o__wtoi
_o_exit
_o_free
_o_terminate
__C_specific_handler
__current_exception
__current_exception_context
_CxxThrowException
memcmp
memcpy

api-ms-win-crt-string-l1-1-0

memset

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

QueryPerformanceCounter

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

InitializeSListHead

api-ms-win-core-delayload-l1-1-1

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

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

ApiSetQueryApiSetPresence

Sections

.text
Size: 96KB - Virtual size: 94KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

fothk
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 28KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 8KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 4KB - Virtual size: 232B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 420B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

831f09a183825fcd04b27df4080a7582

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntdll

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

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

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

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

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

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

api-ms-win-eventing-classicprovider-l1-1-0

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

api-ms-win-core-heap-l2-1-0

api-ms-win-core-string-l2-1-0

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

api-ms-win-core-synch-l1-2-0

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

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

api-ms-win-core-libraryloader-l1-2-0

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

api-ms-win-eventing-provider-l1-1-0

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

api-ms-win-core-threadpool-l1-2-0

api-ms-win-core-processthreads-l1-1-1

api-ms-win-core-localization-l1-2-0

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

api-ms-win-core-registry-l1-1-1

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-private-l1-1-0

api-ms-win-crt-string-l1-1-0

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

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

api-ms-win-core-delayload-l1-1-1

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

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

Sections

.text Size: 96KB - Virtual size: 94KB

fothk Size: 4KB - Virtual size: 4KB

.rdata Size: 28KB - Virtual size: 27KB

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

.pdata Size: 8KB - Virtual size: 5KB

.didat Size: 4KB - Virtual size: 232B

.rsrc Size: 4KB - Virtual size: 1KB

.reloc Size: 4KB - Virtual size: 420B

.text
Size: 96KB - Virtual size: 94KB

fothk
Size: 4KB - Virtual size: 4KB

.rdata
Size: 28KB - Virtual size: 27KB

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

.pdata
Size: 8KB - Virtual size: 5KB

.didat
Size: 4KB - Virtual size: 232B

.rsrc
Size: 4KB - Virtual size: 1KB

.reloc
Size: 4KB - Virtual size: 420B