back[.]exe | Triage

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General

Target

back.exe
Size

499KB
MD5

a56ab8bd5b382a1b97d2b57cfe1cd0b3
SHA1

987a9c16afe279ce4b09a59aa3fc55c8dbd6698f
SHA256

d585b64f9d1ae26ad4e618989e6678224fda02e27c7112464e0b7551b12782c3
SHA512

a07da7c242f49c3cc050f1cbfec47114f408bb11cd0524eb1e9caf02f25f39c7014be61a2b11cd14df5c0dd4fc0193e0f7403806312eb0cfd769bc986436756f
SSDEEP

6144:zpzKGtgVvCocRRAYNKZDdZvwe5JlBw5tF/jFdTD2SeiVCOn8eCr5PBirE/Sabg4:zpzFG8vRoRXeRj7K+CO8Trw4

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
back.exe

Files

back.exe
.exe windows:4 windows x64 arch:x64

12f2786468cf1742fbbabdd89336ade8

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

kernel32

DeleteCriticalSection
EnterCriticalSection
GetLastError
GetProcAddress
GetStartupInfoA
InitializeCriticalSection
IsDBCSLeadByteEx
LeaveCriticalSection
LoadLibraryA
MultiByteToWideChar
SetUnhandledExceptionFilter
Sleep
TlsGetValue
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WideCharToMultiByte

msvcrt

__C_specific_handler
___lc_codepage_func
___mb_cur_max_func
__getmainargs
__initenv
__iob_func
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_cexit
_commode
_errno
_fileno
_fmode
_initterm
_lock
_onexit
_setjmp
_setmode
_unlock
abort
calloc
exit
fflush
fprintf
fputc
free
fwrite
localeconv
malloc
memcmp
memcpy
memset
signal
strerror
strlen
strncmp
vfprintf
wcslen
longjmp

user32

MessageBoxA

Sections

.text
Size: 101KB - Virtual size: 101KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 376KB - Virtual size: 375KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 90KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 96B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 552B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 336B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

12f2786468cf1742fbbabdd89336ade8

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcrt

user32

Sections

.text Size: 101KB - Virtual size: 101KB

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

.rdata Size: 376KB - Virtual size: 375KB

.pdata Size: 6KB - Virtual size: 5KB

.xdata Size: 5KB - Virtual size: 4KB

.bss Size: - Virtual size: 90KB

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

.CRT Size: 512B - Virtual size: 96B

.tls Size: 512B - Virtual size: 16B

.rsrc Size: 1024B - Virtual size: 552B

.reloc Size: 512B - Virtual size: 336B

.text
Size: 101KB - Virtual size: 101KB

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

.rdata
Size: 376KB - Virtual size: 375KB

.pdata
Size: 6KB - Virtual size: 5KB

.xdata
Size: 5KB - Virtual size: 4KB

.bss
Size: - Virtual size: 90KB

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

.CRT
Size: 512B - Virtual size: 96B

.tls
Size: 512B - Virtual size: 16B

.rsrc
Size: 1024B - Virtual size: 552B

.reloc
Size: 512B - Virtual size: 336B