rscaext[.]dll | Triage

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General

Target

rscaext.dll
Size

50KB
MD5

be4d636a39f92f70aec3a53d1e16abd5
SHA1

a53aedfc27da34efb5b01a52247ddeabedde120f
SHA256

485c0a08563c0277b3b5d5485cba2f11be4188b7389be64c8f7bf7177c1bf943
SHA512

8ce40df1ce587e83412c8c5b86abc0b12d4065ad3beebdb02005fb6ca30603465973ff105331da3c0339f3f6d3493a1f20bc12398bcc30785f88609f0dfa7e58
SSDEEP

768:EqnAu5x777CCagl4LrZ4mzlXtz1/fClgRNT6xFYC8VsWO:8qx7XUrZ4ACOu/v8VpO

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
rscaext.dll

Files

rscaext.dll
.dll regsvr32 windows:10 windows x64 arch:x64

9eabac74466679dfb0b13445b96f6469

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

rscaext.pdb

Imports

msvcrt

_itoa_s
_aligned_malloc
_aligned_free
sprintf_s
strnlen
strrchr
_vsnprintf_s
_onexit
_wcslwr_s
__dllonexit
_unlock
_lock
__C_specific_handler
_initterm
_amsg_exit
_XcptFilter
free
_callnewh
malloc
isdigit
wcstoul
wcschr
wcsnlen
memset
memcpy
wcscmp

oleaut32

VariantInit
SysAllocString
VariantClear
SysFreeString

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

ConvertSidToStringSidW

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

SetLastError
GetLastError
UnhandledExceptionFilter
SetUnhandledExceptionFilter

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

LocalFree
LocalAlloc

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

CoTaskMemFree
CoCreateInstance

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

GetModuleHandleW
DisableThreadLibraryCalls
GetProcAddress
GetModuleFileNameA

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

InitializeSRWLock
AcquireSRWLockExclusive
Sleep
DeleteCriticalSection
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionAndSpinCount
ReleaseSRWLockExclusive

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

RegOpenKeyExW
RegQueryValueExA
RegCreateKeyExA
RegSetValueExA
RegCloseKey
RegQueryValueExW
RegOpenKeyExA

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

GetCurrentProcess
TerminateProcess
GetCurrentProcessId
GetCurrentThreadId

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

WriteFile

ws2_32

WSAGetLastError
WSAStartup
WSAStringToAddressW
WSACleanup
htons

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

QueryPerformanceCounter

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

GetSystemInfo
GetSystemTime
GetSystemTimeAsFileTime
GetTickCount

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

RtlVirtualUnwind
RtlCaptureContext
RtlLookupFunctionEntry

httpapi

HttpInitialize
HttpTerminate
HttpQueryServiceConfiguration
HttpSetServiceConfiguration
HttpDeleteServiceConfiguration

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

HeapFree
GetProcessHeap
HeapAlloc
HeapReAlloc

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

GetSystemDefaultLangID

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

OutputDebugStringA

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

InitializeSListHead
InterlockedPopEntrySList
QueryDepthSList

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

SystemTimeToFileTime

bcrypt

BCryptDestroyHash
BCryptFinishHash
BCryptHashData
BCryptCreateHash

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

DeleteTimerQueueTimer
CreateTimerQueueTimer

api-ms-win-eventlog-legacy-l1-1-0

DeregisterEventSource

ntdll

RtlGetCurrentPeb
RtlLengthRequiredSid
RtlInitializeSid
RtlSubAuthoritySid
RtlUpcaseUnicodeChar

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 33KB - Virtual size: 33KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 68B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

9eabac74466679dfb0b13445b96f6469

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

oleaut32

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

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

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

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

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

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

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

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

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

ws2_32

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

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

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

httpapi

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

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

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

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

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

bcrypt

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

api-ms-win-eventlog-legacy-l1-1-0

ntdll

Exports

Exports

Sections

.text Size: 33KB - Virtual size: 33KB

.rdata Size: 11KB - Virtual size: 11KB

.data Size: 512B - Virtual size: 4KB

.pdata Size: 1KB - Virtual size: 1KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 68B

.text
Size: 33KB - Virtual size: 33KB

.rdata
Size: 11KB - Virtual size: 11KB

.data
Size: 512B - Virtual size: 4KB

.pdata
Size: 1KB - Virtual size: 1KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 68B