libaacs[.]dll | Triage

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General

Target

libaacs.dll
Size

1.2MB
MD5

aeef63d9389f2af0f09f746a08ec433e
SHA1

01ab92f018cef671114b34149c21666fc7898558
SHA256

3239525d12eab625912825be873eafa93f4160d3087075957133617996f9378f
SHA512

c46e55bed9b9d245b508497183a59de42233aaaddb59aaaba476eb8fe18f22c678633a590b6f1e9fa3032d670efc2a142c8c712c79ad393864b299ac30cf0095
SSDEEP

12288:qkB0Ah8i0Z9IIfyuOB5ez1OKr+TpAzXydgkYpGCPWWq4UJEU6Yce8PuzgG0GYQAs:qGhaZ9II38561OKk6XyDXdwXa

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
libaacs.dll

Files

libaacs.dll
.dll windows:4 windows x64 arch:x64

44aeae8f56cd7dd7302484bdbc82783e

Headers

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED
IMAGE_FILE_DLL

Imports

advapi32

RegCloseKey
RegOpenKeyExA
RegQueryValueExA

kernel32

CloseHandle
CreateDirectoryA
CreateDirectoryW
CreateEventA
CreateFileA
CreateThread
DeleteCriticalSection
DeviceIoControl
DuplicateHandle
EnterCriticalSection
FreeLibrary
GetACP
GetConsoleOutputCP
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDriveTypeA
GetFileAttributesW
GetFileSize
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleW
GetProcAddress
GetProcessHeap
GetProcessTimes
GetProcessWorkingSetSize
GetStartupInfoA
GetSystemTimeAsFileTime
GetTempPathA
GetThreadLocale
GetThreadTimes
GetTickCount
GetTimeZoneInformation
GetVersionExA
GlobalMemoryStatus
InitializeCriticalSection
IsDBCSLeadByteEx
LeaveCriticalSection
LoadLibraryA
LocalAlloc
LocalFree
MapViewOfFile
MultiByteToWideChar
OpenFileMappingA
QueryPerformanceCounter
ReadFile
ResetEvent
RtlAddFunctionTable
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
SetEvent
SetFilePointerEx
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnhandledExceptionFilter
UnmapViewOfFile
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
WideCharToMultiByte
WriteFile

msvcrt

___lc_codepage_func
__dllonexit
__doserrno
__iob_func
__mb_cur_max
__pioinfo
_amsg_exit
_errno
_exit
_filelengthi64
_fileno
_fstat64
_initterm
_lock
_lseeki64
_onexit
_open_osfhandle
_time64
_unlock
_vsnprintf
_wfopen
_wremove
_write
abort
atoi
calloc
clearerr
clock
exit
fclose
feof
ferror
fflush
fgetpos
fgets
fopen
fprintf
fputc
fread
free
fseek
fsetpos
ftell
fwprintf
fwrite
getc
getenv
iscntrl
isspace
isxdigit
localeconv
malloc
memchr
memcmp
memcpy
memmove
memset
raise
realloc
setvbuf
signal
sprintf
strchr
strcmp
strcpy
strcspn
strerror
strlen
strncmp
strpbrk
strrchr
strspn
strtol
strtoul
vfprintf
wcscpy
wcslen
_snwprintf
_write
_stricmp
_strdup
_setmode
_read
_open
_getpid
_fileno
_close
_access

shell32

SHGetFolderPathW

user32

GetActiveWindow
GetCapture
GetCaretPos
GetClipboardOwner
GetClipboardViewer
GetCursorPos
GetDesktopWindow
GetFocus
GetInputState
GetMessagePos
GetMessageTime
GetOpenClipboardWindow
GetProcessWindowStation
MessageBoxW

Exports

Exports

aacs_close
aacs_decrypt_bus
aacs_decrypt_unit
aacs_free_rl
aacs_get_basic_cci
aacs_get_bdj_root_cert_hash
aacs_get_bus_encryption
aacs_get_content_cert_id
aacs_get_device_binding_id
aacs_get_device_nonce
aacs_get_disc_id
aacs_get_drl
aacs_get_hrl
aacs_get_mk
aacs_get_mkb_version
aacs_get_pmsn
aacs_get_version
aacs_get_vid
aacs_init
aacs_open
aacs_open2
aacs_open_device
aacs_register_file
aacs_select_title
aacs_set_fopen

Sections

.text
Size: 912KB - Virtual size: 912KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 25KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 215KB - Virtual size: 214KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 21KB - Virtual size: 20KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 21KB - Virtual size: 20KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 6KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 1024B - Virtual size: 728B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 88B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

44aeae8f56cd7dd7302484bdbc82783e

Headers

File Characteristics

Imports

advapi32

kernel32

msvcrt

shell32

user32

Exports

Exports

Sections

.text Size: 912KB - Virtual size: 912KB

.data Size: 25KB - Virtual size: 24KB

.rdata Size: 215KB - Virtual size: 214KB

.pdata Size: 21KB - Virtual size: 20KB

.xdata Size: 21KB - Virtual size: 20KB

.bss Size: - Virtual size: 6KB

.edata Size: 1024B - Virtual size: 728B

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

.CRT Size: 512B - Virtual size: 88B

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

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

.text
Size: 912KB - Virtual size: 912KB

.data
Size: 25KB - Virtual size: 24KB

.rdata
Size: 215KB - Virtual size: 214KB

.pdata
Size: 21KB - Virtual size: 20KB

.xdata
Size: 21KB - Virtual size: 20KB

.bss
Size: - Virtual size: 6KB

.edata
Size: 1024B - Virtual size: 728B

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

.CRT
Size: 512B - Virtual size: 88B

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

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