MrmCoreR[.]dll

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General

Target

MrmCoreR.dll
Size

844KB
MD5

87d87dc60ccb59382734a1320feebfed
SHA1

05ed65d87c195e2cf0a423ead35826f6bfc14812
SHA256

eaed23390a4f63550336f8438597cf80179cc1a37f97583d0d0a20de58b8b496
SHA512

bb91aac59639a94a2f0b2cd3753e7b25fb23f4518bed1ef5fabe419aa4cd48340d7093397989976b93937be5982c12e2515309ee64f833e1170ba4da5d3db7f4
SSDEEP

24576:PjWOuqjzbTz/D7bM6Seuf3P/jzbrFlFay6aaKqrrnLXoazoA6GraclyktgI3aJof:TUaz9VlykewCA

Score

1^/10

Malware Config

Signatures

Files

MrmCoreR.dll
.dll windows:10 windows x86 arch:x86

e4b75f75ae5d0f000c0205d8e59a4d2e

Code Sign

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65
Certificate

Issuer

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

Not Before

04/03/2020, 18:30

Not After

03/03/2021, 18:30

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

3e:bd:a5:5f:44:1e:d6:a8:bf:00:2c:83:8d:6a:4f:1c:0e:a8:e3:f4:fd:1c:f9:55:7b:21:e7:b9:73:7c:20:50
Signer

Actual PE Digest

3e:bd:a5:5f:44:1e:d6:a8:bf:00:2c:83:8d:6a:4f:1c:0e:a8:e3:f4:fd:1c:f9:55:7b:21:e7:b9:73:7c:20:50

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

MrmCoreR.pdb

Imports

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

memset
wcsncmp
wcsnlen

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

_initterm_e
_initterm

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

_o__initialize_narrow_environment
_o__initialize_onexit_table
_o__invalid_parameter_noinfo
_o__itow_s
_o__purecall
_o__register_onexit_function
_o__seh_filter_dll
memmove
_o__ui64tow_s
_o__wcsicmp
_o__wcsnicmp
_o__wcstoi64
_o__wtof
_o__wtoi
_o_bsearch
_o_free
_o_isalpha
_o_iswalnum
_o_iswdigit
_o_iswspace
_o_malloc
_o_memcpy_s
_o_qsort_s
_o_terminate
_o_toupper
_o_towlower
_o_towupper
_o_wcscpy_s
_o_wcsncpy_s
_o_wcstoul
_except_handler4_common
_CxxThrowException
_o__execute_onexit_table
_o__errno
_o__crt_atexit
_o__configure_narrow_argv
_o__cexit
_o__callnewh
_o___stdio_common_vswprintf
_o___stdio_common_vsnprintf_s
_o___stdio_common_vfwprintf
_o___std_type_info_destroy_list
_o___std_exception_destroy
_o___std_exception_copy
wcsstr
_o___acrt_iob_func
wcsrchr
wcschr
__std_terminate
__CxxFrameHandler3
memcmp
memcpy

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

_OpenMuiStringCache
_AddMUIStringToCache
_GetMUIStringFromCache

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

ApiSetQueryApiSetPresence

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

GetModuleFileNameA
GetProcAddress
GetModuleHandleW
GetModuleHandleExW
FreeLibrary
FindStringOrdinal
LoadLibraryExW

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

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

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

HeapAlloc
HeapFree
GetProcessHeap

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

GetLastError
SetLastError
RaiseException
UnhandledExceptionFilter
SetUnhandledExceptionFilter

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

OpenThreadToken
TerminateProcess
GetCurrentProcessId
OpenProcessToken
GetCurrentProcess
GetCurrentThread
GetCurrentThreadId
CreateThread

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

GetUserGeoID
GetGeoInfoW
FormatMessageW
GetThreadPreferredUILanguages

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

DebugBreak
OutputDebugStringW
IsDebuggerPresent

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

CloseHandle

rpcrt4

CStdStubBuffer_CountRefs
RpcStringFreeW
UuidToStringW
IUnknown_Release_Proxy
CStdStubBuffer_AddRef
NdrOleFree
CStdStubBuffer_IsIIDSupported
IUnknown_QueryInterface_Proxy
CStdStubBuffer_DebugServerQueryInterface
IUnknown_AddRef_Proxy
NdrCStdStubBuffer2_Release
CStdStubBuffer_QueryInterface
NdrDllGetClassObject
NdrDllCanUnloadNow
NdrCStdStubBuffer_Release
NdrStubCall2
CStdStubBuffer_DebugServerRelease
CStdStubBuffer_Connect
UuidCreate
NdrStubForwardingFunction
CStdStubBuffer_Disconnect
CStdStubBuffer_Invoke
NdrOleAllocate

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

EventRegister
EventWriteTransfer
EventUnregister
EventProviderEnabled
EventSetInformation

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

EncodePointer
DecodePointer

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

GetFileSizeEx
ReadFile
GetFinalPathNameByHandleW
CreateFileW
GetFileAttributesExW
CompareFileTime
CreateDirectoryW
FlushFileBuffers
GetFileAttributesW
GetTempFileNameW
FindClose
FindNextFileW
FindFirstFileW
WriteFile
DeleteFileW

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

GetTickCount
GetSystemTimeAsFileTime
GetSystemTime
GetSystemWindowsDirectoryW

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

RegSetValueExW
RegGetValueW
RegDeleteValueW
RegCloseKey
RegNotifyChangeKeyValue
RegOpenKeyExW
RegCreateKeyExW

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

ObjectStublessClient11
ObjectStublessClient4
CStdStubBuffer2_CountRefs
ObjectStublessClient16
NdrProxyForwardingFunction3
ObjectStublessClient15
CStdStubBuffer2_Disconnect
ObjectStublessClient12
ObjectStublessClient7
ObjectStublessClient13
CStdStubBuffer2_Connect
CStdStubBuffer2_QueryInterface
ObjectStublessClient22
ObjectStublessClient14
NdrProxyForwardingFunction4
NdrProxyForwardingFunction5
ObjectStublessClient18
ObjectStublessClient6
ObjectStublessClient8
ObjectStublessClient20
ObjectStublessClient23
ObjectStublessClient21
ObjectStublessClient19
ObjectStublessClient5
ObjectStublessClient9
ObjectStublessClient17
ObjectStublessClient10
ObjectStublessClient3

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

OpenProcess
IsProcessorFeaturePresent

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

QueryPerformanceCounter

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

InitializeSListHead

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

InitOnceExecuteOnce
Sleep
SignalObjectAndWait

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

CompareStringOrdinal
WideCharToMultiByte
CompareStringEx

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

GetEnvironmentVariableW

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

UnmapViewOfFile
MapViewOfFile
CreateFileMappingW

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

LocalFree
LocalAlloc

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

SystemTimeToFileTime

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

GetTempPathW

ntdll

NtQuerySystemInformation
RtlInitUnicodeString
NtQueryInformationToken
RtlCompareUnicodeString
RtlReportException
RtlConvertDeviceFamilyInfoToString
RtlReleaseSRWLockExclusive
RtlAcquireSRWLockExclusive
RtlAcquireSRWLockShared
RtlReleaseSRWLockShared
RtlInitializeSRWLock
RtlGetDeviceFamilyInfoEnum
RtlCheckSandboxedToken

api-ms-win-shcore-scaling-l1-1-1

ord244

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

SHTaskPoolQueueTask
SHTaskPoolAllowThreadReuse

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

ResolveDelayLoadedAPI

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

DelayLoadFailureHook

Exports

Exports

DllCanUnloadNow
DllGetActivationFactory
DllGetClassObject
GetInternalReferenceBlobForManifestValue
GetMergedSystemPri
GetMergedSystemPriEx
GetStringValueForManifestField
MergeResourcePackPri
MergeSystemPriFiles
ResourceManagerQueueGetCurrentDepth
ResourceManagerQueueGetGlobalFlags
ResourceManagerQueueGetMrtCachePathForPackage
ResourceManagerQueueGetString
ResourceManagerQueueGetStringDirect
ResourceManagerQueueIsResourceReference
ResourceManagerQueueReset
ResourceManagerQueueSetGlobalFlags
ShouldMergeInproc

Sections

.text
Size: 757KB - Virtual size: 757KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 1024B - Virtual size: 520B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 52KB - Virtual size: 52KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e4b75f75ae5d0f000c0205d8e59a4d2e

Code Sign

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65Certificate

Extended Key Usages

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

Key Usages

3e:bd:a5:5f:44:1e:d6:a8:bf:00:2c:83:8d:6a:4f:1c:0e:a8:e3:f4:fd:1c:f9:55:7b:21:e7:b9:73:7c:20:50Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

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

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

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

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

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

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

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

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

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

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

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

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

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

rpcrt4

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

ntdll

api-ms-win-shcore-scaling-l1-1-1

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

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

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

Exports

Exports

Sections

.text Size: 757KB - Virtual size: 757KB

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

.idata Size: 9KB - Virtual size: 8KB

.didat Size: 1024B - Virtual size: 520B

.rsrc Size: 3KB - Virtual size: 2KB

.reloc Size: 52KB - Virtual size: 52KB

33:00:00:02:65:51:ae:1b:bd:00:5c:bf:bd:00:00:00:00:02:65
Certificate

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

3e:bd:a5:5f:44:1e:d6:a8:bf:00:2c:83:8d:6a:4f:1c:0e:a8:e3:f4:fd:1c:f9:55:7b:21:e7:b9:73:7c:20:50
Signer

.text
Size: 757KB - Virtual size: 757KB

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

.idata
Size: 9KB - Virtual size: 8KB

.didat
Size: 1024B - Virtual size: 520B

.rsrc
Size: 3KB - Virtual size: 2KB

.reloc
Size: 52KB - Virtual size: 52KB