RTWorkQ[.]dll | Triage

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General

Target

RTWorkQ.dll
Size

108KB
MD5

6003b39c17595c0f16f7c60b39b8f431
SHA1

72d9b49c368168adeb4093950f33f2abef179207
SHA256

e8c3b2f482c3ced08bb161b4ca12a187203904bae17c0ba261e5610e2d844f49
SHA512

90c602d502b65ffa66edbb18b7e91f150ddb09ddc30111635366dd8444e4d8046552595ef572f51658b3055f6bcbdc7738ede34f5802894d907a72f2c40d9837
SSDEEP

1536:UCXs7FUaCZa9S+7y/I/8LYHPfTCg6wqf7PeQAutUaIEnUE7XfnXI8irvQTg+04rl:TcBUaCkS1DizqTRtUonLPBTg+pPohru

Score

1^/10

Malware Config

Signatures

Files

RTWorkQ.dll
.dll windows:6 windows x86 arch:x86

733af740c174e4113848f7d60d9ae142

Code Sign

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4e
Certificate

Issuer

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

Not Before

01/07/2014, 20:32

Not After

01/10/2015, 20:32

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

85:0b:7a:9e:14:1a:9b:50:4b:90:62:22:a5:da:19:95:05:bd:0d:54:50:92:9c:d4:40:41:f8:38:06:14:b2:12
Signer

Actual PE Digest

85:0b:7a:9e:14:1a:9b:50:4b:90:62:22:a5:da:19:95:05:bd:0d:54:50:92:9c:d4:40:41:f8:38:06:14:b2:12

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

_except_handler4_common
free
_amsg_exit
malloc
_initterm
_XcptFilter
_onexit
__dllonexit
memcpy
memcmp
_unlock
_lock
_purecall
srand
_beginthreadex
memmove
wcsncmp
??2@YAPAXI@Z
??3@YAXPAX@Z
memset

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

GetModuleHandleExW

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

TraceMessage
RegisterTraceGuidsW
GetTraceEnableLevel
GetTraceEnableFlags
UnregisterTraceGuids
GetTraceLoggerHandle

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

EventWrite
EventRegister
EventUnregister

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

WaitForSingleObject
ResetEvent
SetEvent
InitializeSRWLock
CreateEventW
Sleep
ReleaseSRWLockShared
ReleaseSemaphore
WaitForMultipleObjectsEx
CreateSemaphoreExW
DeleteCriticalSection
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
AcquireSRWLockShared
LeaveCriticalSection
InitializeCriticalSection
EnterCriticalSection

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

TlsGetValue
SetThreadPriority
TlsFree
TlsSetValue
GetCurrentProcessId
CreateThread
GetCurrentProcess
GetCurrentThreadId
TlsAlloc
TerminateProcess

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

GetOsSafeBootMode
GetTickCount
GetSystemTimeAsFileTime

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

HeapAlloc
GetProcessHeap
HeapFree

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

CloseHandle

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

SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetLastError

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

CoGetApartmentType
CoUninitialize
CoInitializeEx
CoTaskMemFree

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

CreateThreadpoolIo
CancelThreadpoolIo
SubmitThreadpoolWork
CloseThreadpoolWait
CloseThreadpoolWork
CloseThreadpoolIo
CreateThreadpoolWait
CreateThreadpoolWork
CloseThreadpool
StartThreadpoolIo
WaitForThreadpoolWaitCallbacks
SetThreadpoolThreadMinimum
CreateThreadpool
SetThreadpoolThreadMaximum
SetThreadpoolWait

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

FlsAlloc
FlsSetValue
FlsFree

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

CreateIoCompletionPort
GetQueuedCompletionStatus
PostQueuedCompletionStatus

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

DebugBreak

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

QueryPerformanceFrequency
QueryPerformanceCounter

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

QueueUserWorkItem

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

CoRevokeInitializeSpy
CoRegisterInitializeSpy

ntdll

RtlAllocateHeap
ZwAlpcCancelMessage
ZwAlpcSendWaitReceivePort
ZwAlpcConnectPort
RtlWaitOnAddress
TpAllocAlpcCompletion
RtlInitUnicodeString
AlpcGetMessageAttribute
RtlWakeAddressAll
TpWaitForAlpcCompletion
ZwAlpcDisconnectPort
ZwClose
TpReleaseAlpcCompletion
ZwAlpcQueryInformation
AlpcInitializeMessageAttribute
vDbgPrintEx
TpSetPoolThreadBasePriority
RtlFreeHeap

avrt

AvRevertMmThreadCharacteristics
AvSetMmThreadPriority
AvSetMmThreadCharacteristicsW

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

ApiSetQueryApiSetPresence

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

DelayLoadFailureHook
ResolveDelayLoadedAPI

Exports

Exports

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

Sections

.text
Size: 78KB - Virtual size: 77KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

PAGE
Size: 512B - Virtual size: 339B

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: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 28B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

733af740c174e4113848f7d60d9ae142

Code Sign

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4eCertificate

Extended Key Usages

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

Key Usages

85:0b:7a:9e:14:1a:9b:50:4b:90:62:22:a5:da:19:95:05:bd:0d:54:50:92:9c:d4:40:41:f8:38:06:14:b2:12Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

ntdll

avrt

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

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

Exports

Exports

Sections

.text Size: 78KB - Virtual size: 77KB

PAGE Size: 512B - Virtual size: 339B

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

.idata Size: 5KB - Virtual size: 4KB

.didat Size: 512B - Virtual size: 28B

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

.reloc Size: 6KB - Virtual size: 5KB

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4e
Certificate

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

85:0b:7a:9e:14:1a:9b:50:4b:90:62:22:a5:da:19:95:05:bd:0d:54:50:92:9c:d4:40:41:f8:38:06:14:b2:12
Signer

.text
Size: 78KB - Virtual size: 77KB

PAGE
Size: 512B - Virtual size: 339B

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

.idata
Size: 5KB - Virtual size: 4KB

.didat
Size: 512B - Virtual size: 28B

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

.reloc
Size: 6KB - Virtual size: 5KB