Static task
static1
Behavioral task
behavioral1
Sample
bnkextr.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
bnkextr.exe
Resource
win10v2004-20240226-en
General
-
Target
bnkextr.exe
-
Size
50KB
-
MD5
8e544adb35e05fd203f845e756474887
-
SHA1
836cf748174b2f7c7169fec2bac128b51237a07a
-
SHA256
b1caeabde26e5e85514972d1737d2dc84d4f4ae0c40c50750cf822e84089fa32
-
SHA512
625efa7938520bfd34417375a09823518ccd04b1a4a1ec6d26a41c424a0cdeca12a56904d9d2438d2be7616bcb735d937388b62728f132aff6babbd329a209ca
-
SSDEEP
768:4Cnk7vRS+9TPkUijpVSa0S2EGvygMJqAf4pDKM7fq3uP/XA3N:4Cnk75cU072EGvy69ztPa
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource bnkextr.exe
Files
-
bnkextr.exe.exe windows:6 windows x64 arch:x64
81124582265562f57bf1014c4697c7dc
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
msvcp140
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?_Fiopen@std@@YAPEAU_iobuf@@PEB_WHH@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
?tellg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA?AV?$fpos@U_Mbstatet@@@2@XZ
?seekg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@V?$fpos@U_Mbstatet@@@2@@Z
?read@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEAD_J@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEBD_J@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@_K@Z
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAPEADXZ
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?always_noconv@codecvt_base@std@@QEBA_NXZ
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
??Bid@locale@std@@QEAA_KXZ
??0_Lockit@std@@QEAA@H@Z
?_Winerror_map@std@@YAHH@Z
?_Syserror_map@std@@YAPEBDH@Z
?_Xout_of_range@std@@YAXPEBD@Z
?_Xlength_error@std@@YAXPEBD@Z
?uncaught_exception@std@@YA_NXZ
??1_Lockit@std@@QEAA@XZ
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
vcruntime140
__current_exception_context
__current_exception
__std_exception_destroy
__std_terminate
_CxxThrowException
__C_specific_handler
memset
memmove
memcpy
__std_exception_copy
vcruntime140_1
__CxxFrameHandler4
api-ms-win-crt-runtime-l1-1-0
_set_app_type
__p___argc
__p___argv
_configure_narrow_argv
_initialize_narrow_environment
_initterm
exit
_get_initial_narrow_environment
_exit
_crt_atexit
_register_onexit_function
_initialize_onexit_table
terminate
_register_thread_local_exe_atexit_callback
_c_exit
_initterm_e
_invalid_parameter_noinfo_noreturn
_cexit
_seh_filter_exe
api-ms-win-crt-string-l1-1-0
strncmp
api-ms-win-crt-heap-l1-1-0
malloc
_callnewh
free
_set_new_mode
api-ms-win-crt-stdio-l1-1-0
fclose
fflush
fgetc
fgetpos
fputc
__p__commode
fsetpos
_fseeki64
fwrite
setvbuf
ungetc
_set_fmode
fread
_get_stream_buffer_pointers
api-ms-win-crt-filesystem-l1-1-0
_unlock_file
_lock_file
api-ms-win-crt-locale-l1-1-0
___lc_codepage_func
_configthreadlocale
api-ms-win-crt-math-l1-1-0
__setusermatherr
kernel32
IsDebuggerPresent
FormatMessageA
CreateDirectoryW
CreateFileW
GetFileAttributesExW
AreFileApisANSI
CloseHandle
GetLastError
GetFileInformationByHandleEx
MultiByteToWideChar
WideCharToMultiByte
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
GetModuleHandleW
LocalFree
InitializeSListHead
Sections
.text Size: 28KB - Virtual size: 28KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 15KB - Virtual size: 15KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 436B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 216B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ