RTWorkQ[.]dll | Triage

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General

Target

RTWorkQ.dll
Size

152KB
MD5

230a925dc6834eadcd069aea4a2919a1
SHA1

754ad654fb978d33cf8eed1963cc16248d4df914
SHA256

cc05d64cdb93444463ec7b5788e53c59f93ade61a12a69e52600db173736a2b1
SHA512

fc1920c805194506a49501ab31cff9cfe5057463bc84cb9d812afecb49db76b8d3cb4639b79b55cfc4aeac4a900e99317827049aff0857089d5955d845cfbf3f
SSDEEP

3072:BCMXqpFvZTDEQQQ26ZqTZU4ZlENlFgbQArhfAx9K/auP1Q3biAxBuDMDtEqYIbDu:8MXQFOQG6mU4IwoY/auP1yWMJRbi

Score

1^/10

Malware Config

Signatures

Files

RTWorkQ.dll
.dll windows:10 windows x86 arch:x86

daf796d2593798140e7ca974e28ee3ac

Code Sign

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

03/07/2018, 20:45

Not After

26/07/2019, 20:45

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

fe:3d:63:40:b5:2f:94:f8:c9:c9:9c:08:60:17:d9:3d:a4:ca:dc:b1:83:11:6f:b2:a0:53:17:bb:f9:50:df:82
Signer

Actual PE Digest

fe:3d:63:40:b5:2f:94:f8:c9:c9:9c:08:60:17:d9:3d:a4:ca:dc:b1:83:11:6f:b2:a0:53:17:bb:f9:50:df:82

Digest Algorithm

sha256

PE Digest Matches

true

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

rtworkq.pdb

Imports

msvcrt

_lock
_amsg_exit
__dllonexit
_initterm
_onexit
_callnewh
malloc
free
srand
_purecall
_except_handler4_common
memcmp
_unlock
_beginthreadex
memcpy
wcsncmp
_wcsnicmp
memmove
_XcptFilter
memset

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

GetModuleHandleExW

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

EventRegister
EventUnregister
EventWriteTransfer

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

TraceMessage
RegisterTraceGuidsW
UnregisterTraceGuids
GetTraceLoggerHandle
GetTraceEnableLevel
GetTraceEnableFlags

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

WaitForSingleObject
CreateWaitableTimerExW
SetEvent
CreateSemaphoreExW
InitializeCriticalSection
InitializeSRWLock
ReleaseSRWLockShared
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
AcquireSRWLockShared
ResetEvent
LeaveCriticalSection
DeleteCriticalSection
EnterCriticalSection
CreateEventW
SetWaitableTimer
ReleaseSemaphore

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

GetCurrentThreadId
TerminateProcess
GetCurrentProcess
TlsFree
GetCurrentThread
TlsAlloc
GetCurrentProcessId
TlsSetValue
TlsGetValue

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

HeapAlloc
HeapFree
GetProcessHeap

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

CloseHandle

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

UnhandledExceptionFilter
GetLastError
SetUnhandledExceptionFilter

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

CoIncrementMTAUsage
CoInitializeEx
CoGetApartmentType
CoDecrementMTAUsage
CoWaitForMultipleHandles
CoUninitialize
CoTaskMemFree

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

CloseThreadpoolWait
CreateThreadpoolTimer
CreateThreadpoolWork
SubmitThreadpoolWork
CreateThreadpool
CloseThreadpool
SetThreadpoolTimer
WaitForThreadpoolTimerCallbacks
SetThreadpoolWait
WaitForThreadpoolWaitCallbacks
CloseThreadpoolTimer
SetThreadpoolThreadMinimum
StartThreadpoolIo
CloseThreadpoolIo
CreateThreadpoolIo
CancelThreadpoolIo
SetThreadpoolThreadMaximum
CloseThreadpoolWork
CreateThreadpoolWait

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

GetOsSafeBootMode

ntdll

TpTrimPools
NtSetInformationThread
TpSetPoolThreadBasePriority
RtlSubscribeWnfStateChangeNotification
RtlQueryWnfStateData
RtlUnsubscribeWnfNotificationWaitForCompletion
RtlEqualWnfChangeStamps
TpSetPoolWorkerThreadIdleTimeout

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

FlsFree
FlsAlloc
FlsSetValue

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

GetSystemTimeAsFileTime
GetTickCount

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

CoRegisterInitializeSpy
CoRevokeInitializeSpy

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

DebugBreak

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

QueryPerformanceCounter
QueryPerformanceFrequency

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

CreateIoCompletionPort

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

Sleep

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

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

Exports

Exports

RtwqAddPeriodicCallback
RtwqAllocateSerialWorkQueue
RtwqAllocateWorkQueue
RtwqBeginRegisterWorkQueueWithMMCSS
RtwqBeginUnregisterWorkQueueWithMMCSS
RtwqCancelDeadline
RtwqCancelMultipleWaitingWorkItem
RtwqCancelWorkItem
RtwqCreateAsyncResult
RtwqEndRegisterWorkQueueWithMMCSS
RtwqEndUnregisterWorkQueueWithMMCSS
RtwqGetPlatform
RtwqGetWorkQueueMMCSSClass
RtwqGetWorkQueueMMCSSPriority
RtwqGetWorkQueueMMCSSTaskId
RtwqInvokeCallback
RtwqJoinWorkQueue
RtwqLockPlatform
RtwqLockSharedWorkQueue
RtwqLockWorkQueue
RtwqPutMultipleWaitingWorkItem
RtwqPutWaitingWorkItem
RtwqPutWorkItem
RtwqRegisterPlatformEvents
RtwqRegisterPlatformWithMMCSS
RtwqRemovePeriodicCallback
RtwqScheduleWorkItem
RtwqSetDeadline
RtwqSetDeadline2
RtwqSetLongRunning
RtwqShutdown
RtwqStartup
RtwqUnjoinWorkQueue
RtwqUnlockPlatform
RtwqUnlockWorkQueue
RtwqUnregisterPlatformEvents
RtwqUnregisterPlatformFromMMCSS

Sections

.text
Size: 98KB - Virtual size: 97KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 64B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 30KB - Virtual size: 29KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

daf796d2593798140e7ca974e28ee3ac

Code Sign

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4Certificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

fe:3d:63:40:b5:2f:94:f8:c9:c9:9c:08:60:17:d9:3d:a4:ca:dc:b1:83:11:6f:b2:a0:53:17:bb:f9:50:df:82Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

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

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

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

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

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

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

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

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

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

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

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

ntdll

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

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 98KB - Virtual size: 97KB

.data Size: 512B - Virtual size: 10KB

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

.didat Size: 512B - Virtual size: 64B

.rsrc Size: 30KB - Virtual size: 29KB

.reloc Size: 7KB - Virtual size: 7KB

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

fe:3d:63:40:b5:2f:94:f8:c9:c9:9c:08:60:17:d9:3d:a4:ca:dc:b1:83:11:6f:b2:a0:53:17:bb:f9:50:df:82
Signer

.text
Size: 98KB - Virtual size: 97KB

.data
Size: 512B - Virtual size: 10KB

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

.didat
Size: 512B - Virtual size: 64B

.rsrc
Size: 30KB - Virtual size: 29KB

.reloc
Size: 7KB - Virtual size: 7KB