LockAppBroker[.]dll

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General

Target

LockAppBroker.dll
Size

455KB
MD5

25f8b46103de47d861456ba98518f6f8
SHA1

327521649dac348704b2376d2f660550b94edd23
SHA256

debe381f7f3647baab16c0926ccd86477a98588cbe2eb336665867f930d59628
SHA512

3ec895b6405362927ba58705f1dee8af19d7ae2901e5ce1b54f2e98f46811b4140d80d99471a8f0631cec34b102e405fabafba26f97397af744fdc76e57c5820
SSDEEP

12288:PAGq36JuXs/gvYKYImz17K4cYLFc/PKj/8:PLOs/gvYfImBO4ceFc/PW/

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
LockAppBroker.dll

Files

LockAppBroker.dll
.dll windows:10 windows x86 arch:x86

479081bed6be5e20d0cabe50e6de948b

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

lockappbroker.pdb

Imports

msvcp110_win

?_Xout_of_range@std@@YAXPBD@Z
?_Xbad_function_call@std@@YAXXZ
?_Orphan_all@_Container_base0@std@@QAEXXZ
?_Winerror_map@std@@YAPBDH@Z
?_Xlength_error@std@@YAXPBD@Z
?_Syserror_map@std@@YAPBDH@Z
??0id@locale@std@@QAE@I@Z
?_Xbad_alloc@std@@YAXXZ

msvcrt

_wcsicmp
memcpy
memcmp
_ftol2
_CxxThrowException
memmove
??3@YAXPAX@Z
_purecall
malloc
_callnewh
_XcptFilter
_amsg_exit
free
_initterm
?terminate@@YAXXZ
_except_handler4_common
__CxxFrameHandler3
_onexit
__dllonexit
_vsnwprintf
memcpy_s
memmove_s
??1exception@@UAE@XZ
??0exception@@QAE@XZ
??0exception@@QAE@ABV0@@Z
_vsnprintf_s
??_V@YAXPAX@Z
realloc
memset
calloc
_wtoi
towlower
wcsstr
_wcsnicmp
wcschr
_set_errno
_get_errno
??1type_info@@UAE@XZ
_unlock
_lock

shcore

SHCreateStreamOnFileW
ord109
IStream_Read
SHSetValueW
CreateRandomAccessStreamOverStream
CreateStreamOverRandomAccessStream
GetScaleFactorForDevice
ord190
ord188
ord200
SHSetThreadRef
SHGetThreadRef
SHCreateThreadRef
SHCreateMemStream

shlwapi

ord487

twinapi.appcore

ord2
ord3

veeventdispatcher

VE_GetAllTilesInViewFastMarshal
VE_CreateApplicationInformation
VE_MaterializeApplicationActivator

mrmcorer

ResourceManagerQueueGetString

rpcrt4

CStdStubBuffer_DebugServerRelease
NdrStubForwardingFunction
CStdStubBuffer_IsIIDSupported
CStdStubBuffer_Invoke
NdrOleAllocate
NdrDllCanUnloadNow
NdrDllGetClassObject
NdrCStdStubBuffer2_Release
NdrStubCall2
IUnknown_Release_Proxy
IUnknown_AddRef_Proxy
CStdStubBuffer_DebugServerQueryInterface
NdrOleFree
CStdStubBuffer_AddRef
IUnknown_QueryInterface_Proxy

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

GetProcAddress
LoadLibraryExW
GetModuleFileNameA
LoadStringW
FreeLibrary
FreeLibraryAndExitThread
GetModuleHandleExW
DisableThreadLibraryCalls

api-ms-win-core-winrt-error-l1-1-1

IsErrorPropagationEnabled
RoOriginateError
RoReportFailedDelegate
RoGetMatchingRestrictedErrorInfo
RoOriginateErrorW
RoTransformError

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

EncodePointer
DecodePointer

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

ReleaseSRWLockShared
InitOnceBeginInitialize
InitOnceComplete
OpenEventW
AcquireSRWLockExclusive
CreateMutexExW
WaitForSingleObjectEx
InitOnceExecuteOnce
CreateEventW
ResetEvent
WaitForMultipleObjectsEx
ReleaseMutex
CreateSemaphoreExW
AcquireSRWLockShared
InitializeSRWLock
EnterCriticalSection
InitializeCriticalSectionEx
TryAcquireSRWLockShared
DeleteCriticalSection
SetEvent
ReleaseSemaphore
OpenSemaphoreW
CreateEventExW
ReleaseSRWLockExclusive
Sleep
LeaveCriticalSection
WaitForSingleObject

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

HSTRING_UserUnmarshal
HSTRING_UserMarshal
WindowsIsStringEmpty
WindowsGetStringRawBuffer
WindowsStringHasEmbeddedNull
HSTRING_UserFree
WindowsCompareStringOrdinal
WindowsDeleteString
WindowsGetStringLen
WindowsCreateStringReference
HSTRING_UserSize
WindowsCreateString
WindowsDuplicateString

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

QueryPerformanceCounter

api-ms-win-core-processthreads-l1-1-2

CreateThread
TlsAlloc
OpenProcessToken
TlsSetValue
TlsFree
TlsGetValue
OpenThreadToken
GetCurrentThread
GetCurrentProcessId
GetCurrentThreadId
TerminateProcess
GetCurrentProcess
GetProcessId

api-ms-win-core-sysinfo-l1-2-1

GetSystemTimeAsFileTime
GetTickCount
GetVersionExW

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

SetUnhandledExceptionFilter
RaiseException
SetLastError
GetLastError
UnhandledExceptionFilter

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

ObjectStublessClient17
ObjectStublessClient9
ObjectStublessClient12
ObjectStublessClient14
ObjectStublessClient11
CStdStubBuffer2_CountRefs
ObjectStublessClient10
ObjectStublessClient16
ObjectStublessClient18
ObjectStublessClient15
CStdStubBuffer2_Disconnect
ObjectStublessClient7
ObjectStublessClient13
NdrProxyForwardingFunction3
CStdStubBuffer2_QueryInterface
ObjectStublessClient19
CStdStubBuffer2_Connect
NdrProxyForwardingFunction4
NdrProxyForwardingFunction5
ObjectStublessClient6
ObjectStublessClient8

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

CoTaskMemRealloc
RoGetAgileReference
CoUninitialize
CoWaitForMultipleHandles
CoGetApartmentType
CoCreateInstance
CoTaskMemAlloc
CoTaskMemFree
CoDecrementMTAUsage
CoCreateFreeThreadedMarshaler
CoGetCallerTID
CoGetCallContext
CoEnableCallCancellation
CoInitializeEx
StringFromGUID2
CoDisableCallCancellation
CoCancelCall
PropVariantClear
StringFromCLSID
CoIncrementMTAUsage

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

OutputDebugStringW

api-ms-win-core-localization-l1-2-1

FormatMessageW

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

LocalFree
LocalAlloc

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

RegGetValueW
RegQueryValueExW
RegCreateKeyExW
RegSetValueExW
RegCloseKey
RegOpenKeyExW

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

DuplicateHandle
CloseHandle

api-ms-win-core-threadpool-legacy-l1-1-0

CreateTimerQueueTimer
DeleteTimerQueueTimer

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

WaitForThreadpoolWorkCallbacks
CloseThreadpoolWork
CreateThreadpoolTimer
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
CloseThreadpoolTimer
CallbackMayRunLong
FreeLibraryWhenCallbackReturns
TrySubmitThreadpoolCallback
CreateThreadpoolWork
SubmitThreadpoolWork
IsThreadpoolTimerSet

api-ms-win-core-synch-l1-2-1

WaitForMultipleObjects
CreateSemaphoreW

api-ms-win-security-base-l1-2-0

GetLengthSid
CopySid
IsValidSid
EqualSid
GetTokenInformation

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

CompareStringOrdinal

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

RoActivateInstance
RoGetActivationFactory

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

EventWriteTransfer
EventUnregister
EventActivityIdControl
EventRegister
EventSetInformation

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

HeapFree
HeapAlloc
GetProcessHeap

ntdll

RtlCompareUnicodeString
RtlFreeHeap
NtQueryInformationToken
RtlPublishWnfStateData
NtQueryWnfStateData
RtlUnsubscribeWnfNotificationWaitForCompletion
RtlSubscribeWnfStateChangeNotification
RtlNtStatusToDosErrorNoTeb
RtlAllocateHeap
RtlInitUnicodeString

oleaut32

SysFreeString
SysAllocString

api-ms-win-security-sddl-l1-1-0

ConvertStringSidToSidW
ConvertSidToStringSidW

api-ms-win-core-kernel32-legacy-l1-1-1

GetSystemPowerStatus

api-ms-win-power-base-l1-1-0

GetPwrCapabilities

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

ExpandEnvironmentStringsW

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

QueryFullProcessImageNameW

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

SHRegGetUSValueW

api-ms-win-shcore-obsolete-l1-1-0

SHStrDupW

api-ms-win-shcore-stream-l1-1-0

IStream_Reset

api-ms-win-rtcore-ntuser-window-l1-1-0

DestroyWindow
PeekMessageW
PostMessageW
DefWindowProcW
TranslateMessage
DispatchMessageW
PostThreadMessageW
PostQuitMessage
GetWindowLongW
SetWindowLongW

api-ms-win-rtcore-ntuser-synch-l1-1-0

MsgWaitForMultipleObjectsEx

api-ms-win-rtcore-ntuser-private-l1-1-0

GetWindowBand

api-ms-win-ntuser-sysparams-l1-1-0

GetSystemMetrics
SystemParametersInfoW

api-ms-win-rtcore-ntuser-powermanagement-l1-1-0

RegisterPowerSettingNotification
UnregisterPowerSettingNotification

user32

DestroyIcon
GetSysColor

shell32

DuplicateIcon
ord866

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

DelayLoadFailureHook
ResolveDelayLoadedAPI

Exports

Exports

DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject

Sections

.text
Size: 383KB - Virtual size: 383KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 20B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 36KB - Virtual size: 35KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 21KB - Virtual size: 21KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

479081bed6be5e20d0cabe50e6de948b

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcp110_win

msvcrt

shcore

shlwapi

twinapi.appcore

veeventdispatcher

mrmcorer

rpcrt4

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

api-ms-win-core-winrt-error-l1-1-1

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

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

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

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

api-ms-win-core-processthreads-l1-1-2

api-ms-win-core-sysinfo-l1-2-1

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

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

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

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

api-ms-win-core-localization-l1-2-1

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

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

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

api-ms-win-core-threadpool-legacy-l1-1-0

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

api-ms-win-core-synch-l1-2-1

api-ms-win-security-base-l1-2-0

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

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

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

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

ntdll

oleaut32

api-ms-win-security-sddl-l1-1-0

api-ms-win-core-kernel32-legacy-l1-1-1

api-ms-win-power-base-l1-1-0

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

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

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

api-ms-win-shcore-obsolete-l1-1-0

api-ms-win-shcore-stream-l1-1-0

api-ms-win-rtcore-ntuser-window-l1-1-0

api-ms-win-rtcore-ntuser-synch-l1-1-0

api-ms-win-rtcore-ntuser-private-l1-1-0

api-ms-win-ntuser-sysparams-l1-1-0

api-ms-win-rtcore-ntuser-powermanagement-l1-1-0

user32

shell32

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

Exports

Exports

Sections

.text Size: 383KB - Virtual size: 383KB

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

.idata Size: 11KB - Virtual size: 11KB

.didat Size: 512B - Virtual size: 20B

.rsrc Size: 36KB - Virtual size: 35KB

.reloc Size: 21KB - Virtual size: 21KB

.text
Size: 383KB - Virtual size: 383KB

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

.idata
Size: 11KB - Virtual size: 11KB

.didat
Size: 512B - Virtual size: 20B

.rsrc
Size: 36KB - Virtual size: 35KB

.reloc
Size: 21KB - Virtual size: 21KB