Static task
static1
Behavioral task
behavioral1
Sample
windows update.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
windows update.exe
Resource
win10v2004-20230831-en
General
-
Target
windows update.exe.vir
-
Size
18.9MB
-
MD5
88769a547a7b6cd0c41c8f4700629dd3
-
SHA1
269eaf46b2576282887c3d38e9bd8a64466ff538
-
SHA256
c5a208a6cc2ed3a1834f26c2c0b3f42c3bfffb95bcc9b9ccc14149e0d8deb0e7
-
SHA512
7a5299d4e504db165c95559d6f9e1b5d0b666ed9c92547847582003ffae40ac6f1e790a3abfc1efff633b92da8ce596d7354a2e4e388541e1e2db079f37c8058
-
SSDEEP
98304:mMnF7GkZghRJfUPEqb5OgeR/U4CrDAh0uLI87kI2X2uJzloQLbI8fzPhPD4Wugxo:EOw1UPdVel0kIyufJXVPD4R2kQ2
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource windows update.exe.vir
Files
-
windows update.exe.vir.exe windows x86
2fe25919f0bef0eba262b57b2f4a8c5c
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
wininet
InternetOpenW
HttpOpenRequestW
InternetReadFile
HttpSendRequestW
InternetCloseHandle
InternetConnectW
kernel32
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
GetModuleHandleW
IsDebuggerPresent
VirtualProtect
HeapFree
SetLastError
VirtualFree
VirtualAlloc
GetSystemPowerStatus
LoadLibraryA
GetNativeSystemInfo
HeapAlloc
GetProcAddress
GetProcessHeap
FreeLibrary
IsBadReadPtr
GetSystemTimeAsFileTime
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetCurrentProcessId
InitializeSListHead
user32
MessageBoxW
msvcp140
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?_New_Locimp@_Locimp@locale@std@@CAPAV123@ABV123@@Z
?_Getgloballocale@locale@std@@CAPAV_Locimp@12@XZ
?_Init@locale@std@@CAPAV_Locimp@12@_N@Z
?uncaught_exception@std@@YA_NXZ
?_Xbad_alloc@std@@YAXXZ
?_Xinvalid_argument@std@@YAXPBD@Z
?_Xout_of_range@std@@YAXPBD@Z
?cerr@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?_Xregex_error@std@@YAXW4error_type@regex_constants@1@@Z
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Fiopen@std@@YAPAU_iobuf@@PBDHH@Z
?id@?$ctype@D@std@@2V0locale@2@A
?_Xlength_error@std@@YAXPBD@Z
?id@?$codecvt@_WDU_Mbstatet@@@std@@2V0locale@2@A
?id@?$collate@D@std@@2V0locale@2@A
_Strcoll
?_Ipfx@?$basic_istream@DU?$char_traits@D@std@@@std@@QAE_N_N@Z
?snextc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHXZ
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SAIPAPBVfacet@locale@2@PBV42@@Z
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@D@Z
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QBEDD@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QBE?AVlocale@2@XZ
?sbumpc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHXZ
?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHXZ
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHD@Z
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PAD1AAPAD@Z
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAE@XZ
?setp@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXPAD0@Z
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXXZ
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXPAPAD0PAH001@Z
?tie@?$basic_ios@DU?$char_traits@D@std@@@std@@QBEPAV?$basic_ostream@DU?$char_traits@D@std@@@2@XZ
??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@PAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEXXZ
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@XZ
?in@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PBD1AAPBDPAD3AAPAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PBD1AAPBDPAD3AAPAD@Z
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAE_JPBD_J@Z
??1_Lockit@std@@QAE@XZ
?gptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
?pptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
?egptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
?gbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXH@Z
?setg@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXPAD00@Z
?epptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
?_Gndec@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEPADXZ
?_Gninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEPADXZ
?_Gnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBE_JXZ
?pbump@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXH@Z
?setp@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXPAD00@Z
?_Pninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEPADXZ
?_Pnavail@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBE_JXZ
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEXH_N@Z
?rdbuf@?$basic_ios@DU?$char_traits@D@std@@@std@@QBEPAV?$basic_streambuf@DU?$char_traits@D@std@@@2@XZ
?fill@?$basic_ios@DU?$char_traits@D@std@@@std@@QBEDXZ
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IAE@XZ
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QAE@PAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
??4?$_Yarn@D@std@@QAEAAV01@PBD@Z
?c_str@?$_Yarn@D@std@@QBEPBDXZ
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAE@XZ
?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAEXXZ
?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UAEXXZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JXZ
?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEHXZ
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JPAD_J@Z
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAE_JPBD_J@Z
?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEPAV12@PAD_J@Z
?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEHXZ
?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MAEXABVlocale@2@@Z
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UAE@XZ
??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UAE@XZ
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@P6AAAV01@AAV01@@Z@Z
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV12@PBD_J@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UAE@XZ
?width@ios_base@std@@QAE_J_J@Z
?width@ios_base@std@@QBE_JXZ
?flags@ios_base@std@@QBEHXZ
?good@ios_base@std@@QBE_NXZ
??Bios_base@std@@QBE_NXZ
?_Getcat@?$ctype@D@std@@SAIPAPBVfacet@locale@2@PBV42@@Z
?tolower@?$ctype@D@std@@QBEPBDPADPBD@Z
?tolower@?$ctype@D@std@@QBEDD@Z
?is@?$ctype@D@std@@QBE_NFD@Z
??1?$codecvt@_WDU_Mbstatet@@@std@@MAE@XZ
_Strxfrm
?in@?$codecvt@_WDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PBD1AAPBDPA_W3AAPA_W@Z
?always_noconv@codecvt_base@std@@QBE_NXZ
?_Addfac@_Locimp@locale@std@@AAEXPAVfacet@23@I@Z
??1facet@locale@std@@MAE@XZ
??0facet@locale@std@@IAE@I@Z
?_Decref@facet@locale@std@@UAEPAV_Facet_base@3@XZ
?_Incref@facet@locale@std@@UAEXXZ
??Bid@locale@std@@QAEIXZ
?_Getcoll@_Locinfo@std@@QBE?AU_Collvec@@XZ
??1_Locinfo@std@@QAE@XZ
??0_Locinfo@std@@QAE@PBD@Z
??0_Lockit@std@@QAE@H@Z
?eback@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
??0?$codecvt@_WDU_Mbstatet@@@std@@QAE@I@Z
vcruntime140
__current_exception
__current_exception_context
strchr
_except_handler4_common
__std_exception_destroy
__CxxFrameHandler3
memmove
_CxxThrowException
memset
memchr
memcmp
memcpy
__std_exception_copy
api-ms-win-crt-stdio-l1-1-0
_fseeki64
__p__commode
fread
fwrite
_set_fmode
fgetpos
_get_stream_buffer_pointers
ungetc
fgetc
setvbuf
fsetpos
fclose
fflush
fputc
api-ms-win-crt-heap-l1-1-0
realloc
free
malloc
_set_new_mode
_callnewh
api-ms-win-crt-utility-l1-1-0
bsearch
rand
srand
qsort
api-ms-win-crt-convert-l1-1-0
strtol
api-ms-win-crt-filesystem-l1-1-0
_unlock_file
_lock_file
api-ms-win-crt-runtime-l1-1-0
_get_initial_narrow_environment
_configure_narrow_argv
_initterm_e
exit
_exit
_initterm
_initialize_narrow_environment
__p___argc
__p___argv
_cexit
_c_exit
_register_thread_local_exe_atexit_callback
_seh_filter_exe
_set_app_type
_errno
_initialize_onexit_table
_register_onexit_function
_crt_atexit
_controlfp_s
terminate
_invalid_parameter_noinfo_noreturn
api-ms-win-crt-time-l1-1-0
_time64
api-ms-win-crt-math-l1-1-0
__setusermatherr
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
Sections
.text Size: 5.6MB - Virtual size: 5.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 5.1MB - Virtual size: 5.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 7.3MB - Virtual size: 7.3MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 881KB - Virtual size: 881KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ