AppxSip[.]dll | Triage

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General

Target

AppxSip.dll
Size

226KB
MD5

138eac47555b4e370c746b41f9f50599
SHA1

c68d5882b571732b6287ab7d0dd3dcab087639d8
SHA256

9bfb303600cdf6dc3c58914fae44e2edd0ca07150f6d158320112510b114fe22
SHA512

14f79395ab53432484c7926a9a0ca276c940960dcaac98b68e9f6fb6d2bb7f2062fc024b0fb36ccb4dd5261b1c5d681a355d48faa19afbe24ff40ccfb804226e
SSDEEP

6144:A/k4zBykd/5yyPfqIBZZw9U85DaUYEA6:A7HryyPi+LUDMu

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
AppxSip.dll

Files

AppxSip.dll
.dll regsvr32 windows:10 windows x86 arch:x86

8f8b6acf6e9ae4f267a6b7d0c934a1f0

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

AppxSip.pdb

Imports

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

_initterm_e
_initterm

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

memset
wcsncmp

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

_o__configure_narrow_argv
_o__crt_atexit
_o__errno
_o__execute_onexit_table
_o__initialize_narrow_environment
_o__initialize_onexit_table
_o__invalid_parameter_noinfo
_o__register_onexit_function
_o__seh_filter_dll
memmove
_o__strnicmp
_o__wcsicmp
_o_free
_o_malloc
_o_qsort
_o_wcscpy_s
__CxxFrameHandler3
_except_handler4_common
_CxxThrowException
wcschr
wcsstr
_o__cexit
_o__callnewh
_o___stdio_common_vswprintf
_o___stdio_common_vsnwprintf_s
_o___stdio_common_vsnprintf_s
_o___std_type_info_destroy_list
_o___std_exception_destroy
_o___std_exception_copy
wcsrchr
memcmp
memcpy

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

RaiseException
SetLastError
GetLastError
UnhandledExceptionFilter
SetUnhandledExceptionFilter

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

ReleaseSRWLockShared
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
LeaveCriticalSection
EnterCriticalSection
InitializeCriticalSectionEx
AcquireSRWLockShared

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

DecodePointer

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

EventRegister
EventWriteTransfer
EventUnregister
EventSetInformation

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

DebugBreak
IsDebuggerPresent
OutputDebugStringW

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

GetCurrentProcess
OpenThreadToken
TerminateProcess
TlsAlloc
GetCurrentThreadId
TlsGetValue
TlsSetValue
GetCurrentThread
GetCurrentProcessId

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

FormatMessageW

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

InitOnceComplete
InitOnceBeginInitialize

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

IsProcessorFeaturePresent

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

QueryPerformanceCounter

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

GetVersionExW
GetSystemTimeAsFileTime
GetLocalTime

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

InitializeSListHead

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

GetModuleHandleExW
GetModuleFileNameA
LoadResource
FreeLibrary
GetProcAddress
LoadLibraryExW
LoadLibraryExA
SizeofResource
LockResource
FindStringOrdinal
GetModuleHandleW

crypt32

CertFreeCertificateContext
CertGetSubjectCertificateFromStore
CryptQueryObject
CryptMsgClose
CryptEncodeObject
CryptSIPAddProvider
CryptSIPRemoveProvider
CryptFindOIDInfo
CertCloseStore
CryptMsgGetParam
CertNameToStrW

ntdll

RtlLeaveCriticalSection
RtlSetLastWin32Error
RtlNumberGenericTableElementsAvl
RtlEnterCriticalSection
NtQuerySystemInformation
RtlEnumerateGenericTableWithoutSplayingAvl
RtlDeleteElementGenericTableAvl
RtlNtStatusToDosError
RtlReportException
RtlInitUnicodeString
RtlLookupElementGenericTableAvl
RtlCompareUnicodeString
RtlDeleteCriticalSection
RtlInsertElementGenericTableAvl
RtlInitializeGenericTableAvl
RtlInitializeCriticalSection

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

GetProcessHeap
HeapFree
HeapAlloc

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

GetTempPathW

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

CloseHandle

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

CoUninitialize
CoCreateInstance
IIDFromString
CoInitializeEx
CreateStreamOnHGlobal
CoTaskMemFree
CoTaskMemAlloc

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

GetFullPathNameW
GetFileAttributesW
DeleteFileW
CreateFileW
DeleteFileA

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

CompareStringOrdinal
WideCharToMultiByte
CompareStringEx
CompareStringW

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

PathIsURLW

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

RegGetValueW

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

GetEnvironmentVariableW

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

LocalFree

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

DelayLoadFailureHook

opcservices

ord15
ord12
ord8
ord16

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

TdhEnumerateProviderFieldInformation
TdhGetEventInformation
TdhGetEventMapInformation

xmllite

CreateXmlReader

api-ms-win-core-kernel32-legacy-l1-1-0

FindResourceW
DosDateTimeToFileTime
FileTimeToDosDateTime
CopyFileW

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

ReplaceFileW
MoveFileExW

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

CompareStringA

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

SystemTimeToFileTime

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

ImpersonateLoggedOnUser
RevertToSelf

Exports

Exports

AppxBundleSipCreateIndirectData
AppxBundleSipGetSignedDataMsg
AppxBundleSipIsFileSupportedName
AppxBundleSipPutSignedDataMsg
AppxBundleSipRemoveSignedDataMsg
AppxBundleSipVerifyIndirectData
AppxSipCreateIndirectData
AppxSipGetSignedDataMsg
AppxSipIsFileSupportedName
AppxSipPutSignedDataMsg
AppxSipRemoveSignedDataMsg
AppxSipVerifyIndirectData
DllCanUnloadNow
DllRegisterServer
DllUnregisterServer
EappxBundleSipCreateIndirectData
EappxBundleSipGetSignedDataMsg
EappxBundleSipIsFileSupportedName
EappxBundleSipPutSignedDataMsg
EappxBundleSipRemoveSignedDataMsg
EappxBundleSipVerifyIndirectData
EappxSipCreateIndirectData
EappxSipGetSignedDataMsg
EappxSipIsFileSupportedName
EappxSipPutSignedDataMsg
EappxSipRemoveSignedDataMsg
EappxSipVerifyIndirectData
P7xSipCreateIndirectData
P7xSipGetSignedDataMsg
P7xSipIsFileSupportedName
P7xSipPutSignedDataMsg
P7xSipRemoveSignedDataMsg
P7xSipVerifyIndirectData

Sections

.text
Size: 202KB - Virtual size: 202KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 104B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8f8b6acf6e9ae4f267a6b7d0c934a1f0

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

crypt32

ntdll

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

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

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

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

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

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

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

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

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

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

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

opcservices

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

xmllite

api-ms-win-core-kernel32-legacy-l1-1-0

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

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

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

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

Exports

Exports

Sections

.text Size: 202KB - Virtual size: 202KB

.data Size: 512B - Virtual size: 1KB

.idata Size: 7KB - Virtual size: 6KB

.didat Size: 512B - Virtual size: 104B

.rsrc Size: 7KB - Virtual size: 6KB

.reloc Size: 8KB - Virtual size: 7KB

.text
Size: 202KB - Virtual size: 202KB

.data
Size: 512B - Virtual size: 1KB

.idata
Size: 7KB - Virtual size: 6KB

.didat
Size: 512B - Virtual size: 104B

.rsrc
Size: 7KB - Virtual size: 6KB

.reloc
Size: 8KB - Virtual size: 7KB