a32big[.]dll | Triage

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General

Target

a32big.dll
Size

330KB
MD5

f88e4c4123ba6fd6299b74e989711db9
SHA1

48887432c6ed10ae38018f20767731692f48ff71
SHA256

35c5a5e346165977966ed3e99c9b3b9ce6f90bcdc9c2ac93e8d7a4d36b2752bb
SHA512

751613ec6383753d551471073fd801a98710734a93ee0573284ac8cf5adba1f517418466ed4b2268ab067ea950afdf608b2246c2b7effca88e1914bdf82b303e
SSDEEP

6144:URXweGsCLH2mMnpyxT5oz9QVAG5e4ZIrA/qTX1pGlMNzhMY:QZNCqJkTocs4ZIzGlwzhMY

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
a32big.dll

Files

a32big.dll
.dll regsvr32 windows:4 windows x86

df581e0ae58604a0122010ff4d1c6c05

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DEBUG_STRIPPED
IMAGE_FILE_DLL

Imports

kernel32

CallNamedPipeW
CloseHandle
ConnectNamedPipe
CreateNamedPipeW
CreateThread
CreateToolhelp32Snapshot
DeleteCriticalSection
DisconnectNamedPipe
EnterCriticalSection
GetConsoleWindow
GetCurrentProcessId
GetLastError
GetModuleHandleW
GetProcAddress
GetProcessHeap
GetTickCount
HeapAlloc
HeapFree
InitializeCriticalSection
LeaveCriticalSection
LoadLibraryW
LocalAlloc
LocalFree
OpenProcess
Process32FirstW
Process32NextW
Sleep
TerminateProcess
TlsGetValue
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery

msvcrt

_amsg_exit
_initterm
_iob
_lock
_unlock
abort
calloc
free
fwrite
memcpy
realloc
strcpy
strlen
strncmp
vfprintf
wcscpy
wcslen

shell32

StrStrIW

user32

CreateWindowExW
DestroyWindow
DispatchMessageW
GetMessageW
KillTimer
LoadCursorW
LoadIconW
PostQuitMessage
RegisterClassExW
SendMessageW
SetTimer
ShowWindow
UpdateWindow
wsprintfW

Exports

Exports

ARef
DllGetClassObject
DllMain
DllRegisterServer
DllUnregisterServer
Start

Sections

.text
Size: 55KB - Virtual size: 55KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 266KB - Virtual size: 265KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 1024B - Virtual size: 516B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 1KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 186B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 44B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 8B

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

df581e0ae58604a0122010ff4d1c6c05

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcrt

shell32

user32

Exports

Exports

Sections

.text Size: 55KB - Virtual size: 55KB

.data Size: 266KB - Virtual size: 265KB

.rdata Size: 1024B - Virtual size: 516B

.bss Size: - Virtual size: 1KB

.edata Size: 512B - Virtual size: 186B

.idata Size: 2KB - Virtual size: 1KB

.CRT Size: 512B - Virtual size: 44B

.tls Size: 512B - Virtual size: 8B

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

.text
Size: 55KB - Virtual size: 55KB

.data
Size: 266KB - Virtual size: 265KB

.rdata
Size: 1024B - Virtual size: 516B

.bss
Size: - Virtual size: 1KB

.edata
Size: 512B - Virtual size: 186B

.idata
Size: 2KB - Virtual size: 1KB

.CRT
Size: 512B - Virtual size: 44B

.tls
Size: 512B - Virtual size: 8B

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