Static task
static1
Behavioral task
behavioral1
Sample
back1.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
back1.exe
Resource
win10v2004-20240412-en
General
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Target
back1.exe
-
Size
441KB
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MD5
fd732c3484e641deeb3e057dd9859a97
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SHA1
196c212199bc77438c3dd8e315226bf9cc11b959
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SHA256
1e01dbb263ecf413f89adb60f2027d5aa60ee18225879fa932feb5c974de7fa1
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SHA512
1c7fd445a854d2c208aad5d8acbdbecd8307dc842bd62b6f256f8372c527e82da8e8eb708f0e0a50bd0d614a6c4f90fab77c252c602d84bdd7cec434330ce465
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SSDEEP
12288:4NcdAFLxUM6loNHVuRB8bKPuALatcvnTWQJfWPsNgVw:8cdAddfNHIAOuALcsnTpJO0NgV
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource back1.exe
Files
-
back1.exe.exe windows:4 windows x64 arch:x64
ffa54d0e8723ca7d1d98886b6e3db300
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
memcpy
memset
signal
strerror
strlen
strncmp
vfprintf
wcslen
longjmp
user32
MessageBoxA
Sections
.text Size: 59KB - Virtual size: 58KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 352B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 368KB - Virtual size: 367KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.pdata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.xdata Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.bss Size: - Virtual size: 73KB
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: 168B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ