SimAuth[.]dll | Triage

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General

Target

SimAuth.dll
Size

126KB
MD5

53ad76ac4fa1977f6c12ccfa26af0f89
SHA1

61328f077e317db21d1894bd646bc4e888db2ea3
SHA256

acae0d6277eadb1863c1c0a398fcc86c822419f3e7bf2fdf102ff86c4ab6eee6
SHA512

abaf46f2193ffa93bb3d5d326576bcc9e4381e23517ec865ad76b78f9d95289a2d89702cecb0ca79647715093b3505dcc2c6a7a45bf3e94c2219bae8d265d8d5
SSDEEP

1536:mTA+jplAK3Jv4PPQLn+ezs+DHiFgbKeJ4sWMv5W9D2TlD7nPPSL2nySMeT9I9+:mc+jGPPQL+uGY4sWi5yypnPaLqMC9I9

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
SimAuth.dll

Files

SimAuth.dll
.dll windows:10 windows x86 arch:x86

f798061ac56e61be8b5e4dc973e8f2ba

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

Simauth.pdb

Imports

msvcrt

_XcptFilter
_amsg_exit
?terminate@@YAXXZ
_wcsicmp
memcpy
__CxxFrameHandler3
_strnicmp
free
_CxxThrowException
?what@exception@@UBEPBDXZ
??1exception@@UAE@XZ
??0exception@@QAE@ABV0@@Z
_initterm
memcmp
_lock
_unlock
__dllonexit
??3@YAXPAX@Z
_onexit
??1type_info@@UAE@XZ
??0exception@@QAE@ABQBDH@Z
??0exception@@QAE@ABQBD@Z
_except_handler4_common
_callnewh
malloc
_purecall
memmove
memcpy_s
memset

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

EventUnregister
EventRegister
EventWrite

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

UnregisterTraceGuids
TraceMessage
GetTraceLoggerHandle
RegisterTraceGuidsW
GetTraceEnableLevel
GetTraceEnableFlags

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

LoadStringW
DisableThreadLibraryCalls

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

HeapAlloc
GetProcessHeap
HeapFree

ws2_32

htonl
ntohs
htons

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

EnterCriticalSection
Sleep
ResetEvent
LeaveCriticalSection
InitializeCriticalSection
DeleteCriticalSection
SetEvent
CreateEventW
WaitForSingleObject

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

QueryPerformanceCounter

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

GetCurrentProcessId
GetCurrentThreadId
GetCurrentProcess
TerminateProcess

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

GetTickCount
GetSystemTimeAsFileTime

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

UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetLastError

ntdll

WinSqmSetDWORD
NtPowerInformation
RtlNtStatusToDosError

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

RegSetValueExW
RegOpenKeyExW
RegQueryValueExW
RegCloseKey

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

MultiByteToWideChar
WideCharToMultiByte

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

LocalFree

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

DeviceIoControl

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

CreateFileW

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

CloseHandle

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

ResolveDelayLoadedAPI
DelayLoadFailureHook

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

ApiSetQueryApiSetPresence

Exports

Exports

EapPeerFreeErrorMemory
EapPeerFreeMemory
EapPeerGetInfo

Sections

.text
Size: 109KB - Virtual size: 109KB

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: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 152B

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: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f798061ac56e61be8b5e4dc973e8f2ba

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

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

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

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

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

ws2_32

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

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

ntdll

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 109KB - Virtual size: 109KB

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

.idata Size: 3KB - Virtual size: 3KB

.didat Size: 512B - Virtual size: 152B

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

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

.text
Size: 109KB - Virtual size: 109KB

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

.idata
Size: 3KB - Virtual size: 3KB

.didat
Size: 512B - Virtual size: 152B

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

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