aa[.]exe | Triage

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General

Target

aa.exe
Size

264KB
MD5

3685e3c75c50546f2ec7918d0f810d2a
SHA1

7881d4676d607855433f6eaefe4e24a31e4c7caa
SHA256

83677c101ce494a7d629f5ef3e0e0324c1c715087bb87c0cd8ff9d276c60290b
SHA512

5b6b961505ae0ac6ca16af05fd1ed370b4c1b4b1cd6fa3a8c3a0c93aa4bc47cc4d81329d0230f3941c52007f6cb3ac3a411ae9a4a2730254abec37a3d57be43f
SSDEEP

3072:RBmk8+E/LNwmUq98knkrovB0mTD2KC/OHCcFVKrVflCARmK:RBz8h/LVuDOw

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
aa.exe

Files

aa.exe
.exe windows x64

dd8b77a1f9cc5a9dd33b987f642bca8f

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

dnsapi

DnsQuery_A
DnsFree

ws2_32

ntohl

bcrypt

BCryptExportKey
BCryptImportKeyPair
BCryptDestroyKey
BCryptEncrypt
BCryptGenerateSymmetricKey
BCryptCloseAlgorithmProvider
BCryptSetProperty
BCryptOpenAlgorithmProvider
BCryptGenRandom
BCryptDecrypt

crypt32

CryptDecodeObjectEx
CryptStringToBinaryA

kernel32

QueryPerformanceCounter
GetModuleHandleW
GetStartupInfoW
GetCurrentThreadId
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
GetSystemTimeAsFileTime
GetCurrentProcessId
IsDebuggerPresent
Sleep
ReadFile
WriteFile
SetHandleInformation
CreatePipe
PeekNamedPipe
WaitForSingleObject
CreateProcessA
LocalAlloc
LocalFree
RtlLookupFunctionEntry
RtlCaptureContext
InitializeSListHead

msvcp140

_Xtime_get_ticks
?_Xout_of_range@std@@YAXPEBD@Z
?_Xlength_error@std@@YAXPEBD@Z

vcruntime140

memmove
__std_exception_destroy
memcpy
_CxxThrowException
memchr
__C_specific_handler
__current_exception
__current_exception_context
__std_exception_copy
memset

vcruntime140_1

__CxxFrameHandler4

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

_set_app_type
_crt_atexit
_cexit
_get_narrow_winmain_command_line
_initterm_e
_exit
_register_onexit_function
_c_exit
_register_thread_local_exe_atexit_callback
_initialize_onexit_table
_initialize_narrow_environment
_seh_filter_exe
_configure_narrow_argv
terminate
_invalid_parameter_noinfo_noreturn
exit
_initterm

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

isalnum

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

malloc
_callnewh
free
_set_new_mode

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

__setusermatherr

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

_set_fmode
__p__commode

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

_configthreadlocale

Sections

.text
Size: 24KB - Virtual size: 24KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 12KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 212KB - Virtual size: 212KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

dd8b77a1f9cc5a9dd33b987f642bca8f

Headers

DLL Characteristics

File Characteristics

Imports

dnsapi

ws2_32

bcrypt

crypt32

kernel32

msvcp140

vcruntime140

vcruntime140_1

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

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

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

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

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

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

Sections

.text Size: 24KB - Virtual size: 24KB

.rdata Size: 12KB - Virtual size: 12KB

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

.pdata Size: 4KB - Virtual size: 4KB

.rsrc Size: 212KB - Virtual size: 212KB

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 24KB - Virtual size: 24KB

.rdata
Size: 12KB - Virtual size: 12KB

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

.pdata
Size: 4KB - Virtual size: 4KB

.rsrc
Size: 212KB - Virtual size: 212KB

.reloc
Size: 4KB - Virtual size: 4KB