asf[.]exe | Triage

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General

Target

asf.exe
Size

276KB
MD5

337b02dd0290c401544012197086c499
SHA1

3261927ae2525d7d357956a86c57b0bf50a0f562
SHA256

7f9020a41e32253d91b239e8c9fc9fc676c96ea51914b80e56dce60d77f56a7d
SHA512

0b1ab5ee8856df18a798479544308198c16c60e5a445ed1e4d04030175c7cc640df9dc73c646fe8aac1378f81562cbff12ae76e881c625a13d6767e40e316f53
SSDEEP

6144:T4cak9NV8MqpJ6sd3YMdyV13cMVpnMf3:TxacnEPRnyzBpn

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
asf.exe

Files

asf.exe
.exe windows:6 windows x64 arch:x64

5572651b400a32210c3e87846aa804ba

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

dwmapi

DwmExtendFrameIntoClientArea

kernel32

GlobalLock
GlobalUnlock
QueryPerformanceFrequency
QueryPerformanceCounter
DeviceIoControl
CreateFileW
GetModuleHandleA
CreateToolhelp32Snapshot
MultiByteToWideChar
Sleep
Process32NextW
Process32FirstW
CloseHandle
CreateThread
GetProcAddress
WideCharToMultiByte
GlobalFree
SetConsoleTitleW
GlobalAlloc
GetCurrentThreadId
GetModuleHandleW
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
SleepConditionVariableSRW
WakeAllConditionVariable
AcquireSRWLockExclusive
ReleaseSRWLockExclusive
lstrcmpiW
GetCurrentProcessId

user32

GetWindow
DefWindowProcW
GetWindowLongW
SetClipboardData
DestroyWindow
SetWindowPos
UnregisterClassW
RegisterClassExW
GetClipboardData
ShowWindow
GetAsyncKeyState
DispatchMessageW
PeekMessageW
GetForegroundWindow
CreateWindowExA
SetLayeredWindowAttributes
TranslateMessage
LoadIconW
FindWindowW
SetWindowLongW
PostQuitMessage
FindWindowA
UpdateWindow
GetKeyState
ScreenToClient
GetActiveWindow
EmptyClipboard
CloseClipboard
OpenClipboard
GetCursorPos
SetCursorPos
ReleaseCapture
GetClientRect
SetCursor
GetCapture
SetCapture
LoadCursorW
ClientToScreen
GetSystemMetrics

imm32

ImmGetContext
ImmReleaseContext
ImmSetCompositionWindow

msvcp140

??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@_K@Z
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?uncaught_exception@std@@YA_NXZ
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?good@ios_base@std@@QEBA_NXZ
?_Xlength_error@std@@YAXPEBD@Z

d3d9

Direct3DCreate9Ex

vcruntime140_1

__CxxFrameHandler4

vcruntime140

__C_specific_handler
__current_exception_context
__current_exception
__std_exception_copy
__std_exception_destroy
_CxxThrowException
memmove
memcpy
memchr
strstr
__std_terminate
memset

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

ftell
__stdio_common_vsnprintf_s
fflush
__stdio_common_vsprintf_s
fclose
_set_fmode
__p__commode
__acrt_iob_func
fseek
__stdio_common_vfprintf
fwrite
__stdio_common_vsscanf
fread
__stdio_common_vsprintf
_wfopen

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

strncpy
isprint
strcmp

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

qsort

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

free
malloc
_callnewh
_set_new_mode

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

_get_initial_narrow_environment
_initterm
_initterm_e
_exit
exit
__p___argc
__p___argv
_c_exit
_register_thread_local_exe_atexit_callback
_seh_filter_exe
_cexit
system
terminate
_configure_narrow_argv
_crt_atexit
_initialize_narrow_environment
_set_app_type
_register_onexit_function
_initialize_onexit_table
_invalid_parameter_noinfo_noreturn

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

cosf
fmodf
sinf
sqrtf
tanf
floorf
ceilf
powf
atan2
asin
__setusermatherr

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

_configthreadlocale

Sections

.text
Size: 220KB - Virtual size: 219KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 41KB - Virtual size: 41KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 464B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 488B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 308B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

5572651b400a32210c3e87846aa804ba

Headers

DLL Characteristics

File Characteristics

Imports

dwmapi

kernel32

user32

imm32

msvcp140

d3d9

vcruntime140_1

vcruntime140

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

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

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

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

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

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

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

Sections

.text Size: 220KB - Virtual size: 219KB

.rdata Size: 41KB - Virtual size: 41KB

.data Size: 3KB - Virtual size: 15KB

.pdata Size: 9KB - Virtual size: 8KB

_RDATA Size: 512B - Virtual size: 464B

.rsrc Size: 512B - Virtual size: 488B

.reloc Size: 512B - Virtual size: 308B

.text
Size: 220KB - Virtual size: 219KB

.rdata
Size: 41KB - Virtual size: 41KB

.data
Size: 3KB - Virtual size: 15KB

.pdata
Size: 9KB - Virtual size: 8KB

_RDATA
Size: 512B - Virtual size: 464B

.rsrc
Size: 512B - Virtual size: 488B

.reloc
Size: 512B - Virtual size: 308B