Static task
static1
Behavioral task
behavioral1
Sample
rebuild.dll
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
rebuild.dll
Resource
win10v2004-20240802-en
General
-
Target
rebuild.dll
-
Size
2.2MB
-
MD5
09a72b561beb304a23f90c3524f71d45
-
SHA1
cad9f7c1386ad5b404a8f024c622eaf674b92e08
-
SHA256
c4f280351f53de5d58ac72e98770aa2034e624fe6758bd39fa49ee0279cd734a
-
SHA512
02600c4d76109fc14870c87fbec27b3bce8d45668ec003b79c2b3c9a1d5aa568be16db7908a3f34ecd5707151425609b22dd217b5f81d063234ef41877a33903
-
SSDEEP
49152:9F29emkUd60/YaqthByMiYym13LToN27oq:9FPE60/ZcByMiYym5m
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource rebuild.dll
Files
-
rebuild.dll.dll windows:6 windows x86 arch:x86
0c586887909fe4453154bec149aaaac2
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL
Imports
kernel32
LoadLibraryW
QueryPerformanceCounter
QueryPerformanceFrequency
GetModuleHandleA
GetProcAddress
VirtualProtect
VirtualQuery
GetCurrentThread
SetThreadPriority
SetThreadPriorityBoost
GetModuleFileNameA
GetLastError
AddVectoredExceptionHandler
GetCurrentProcess
ExitProcess
CreateThread
SetPriorityClass
GetPriorityClass
DisableThreadLibraryCalls
CreateDirectoryA
GetFileAttributesA
FindClose
FindFirstFileA
FindNextFileA
GetFullPathNameA
WideCharToMultiByte
GetSystemTimeAsFileTime
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
VirtualFree
VirtualAlloc
Thread32Next
Thread32First
CreateToolhelp32Snapshot
FlushInstructionCache
SetThreadContext
GetThreadContext
ResumeThread
SuspendThread
OpenThread
GlobalLock
GetCurrentProcessId
HeapFree
HeapReAlloc
HeapAlloc
HeapDestroy
HeapCreate
MultiByteToWideChar
GetFileInformationByHandleEx
CloseHandle
AreFileApisANSI
GetFileAttributesExW
FindFirstFileW
CreateFileW
GetLocaleInfoEx
FormatMessageA
LocalFree
Sleep
InitializeSListHead
GlobalFree
GlobalUnlock
GetCurrentThreadId
GlobalAlloc
user32
SetCapture
ReleaseCapture
GetForegroundWindow
GetClientRect
SetCursorPos
SetCursor
GetCapture
ClientToScreen
ScreenToClient
OpenClipboard
CloseClipboard
SetClipboardData
LoadCursorA
SetWindowLongA
GetCursorPos
GetClipboardData
FindWindowA
EmptyClipboard
MessageBoxA
SetWindowTextW
IsChild
RegisterHotKey
CallWindowProcA
GetKeyState
GetActiveWindow
GetAsyncKeyState
shell32
ShellExecuteA
msvcp140
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??0_Lockit@std@@QAE@H@Z
??1_Lockit@std@@QAE@XZ
??Bid@locale@std@@QAEIXZ
?_Getgloballocale@locale@std@@CAPAV_Locimp@12@XZ
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_Query_perf_counter
_Query_perf_frequency
_Thrd_detach
?_Throw_Cpp_error@std@@YAXH@Z
?_Syserror_map@std@@YAPBDH@Z
?_Winerror_map@std@@YAHH@Z
_Cnd_destroy_in_situ
_Mtx_lock
_Mtx_unlock
_Cnd_init_in_situ
_Cnd_wait
_Cnd_broadcast
_Cnd_do_broadcast_at_thread_exit
??0_Locinfo@std@@QAE@PBD@Z
??1_Locinfo@std@@QAE@XZ
?_Getfalse@_Locinfo@std@@QBEPBDXZ
?_Gettrue@_Locinfo@std@@QBEPBDXZ
?c_str@?$_Yarn@D@std@@QBEPBDXZ
??0facet@locale@std@@IAE@I@Z
??1facet@locale@std@@MAE@XZ
?_Init@locale@std@@CAPAV_Locimp@12@_N@Z
?flags@ios_base@std@@QAEHH@Z
?setf@ios_base@std@@QAEHH@Z
?setf@ios_base@std@@QAEHHH@Z
?unsetf@ios_base@std@@QAEXH@Z
?precision@ios_base@std@@QBE_JXZ
?precision@ios_base@std@@QAE_J_J@Z
?copyfmt@?$basic_ios@DU?$char_traits@D@std@@@std@@QAEAAV12@ABV12@@Z
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??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@PBX@Z
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?_Xbad_function_call@std@@YAXXZ
?_Incref@facet@locale@std@@UAEXXZ
?_Decref@facet@locale@std@@UAEPAV_Facet_base@3@XZ
?id@?$numpunct@D@std@@2V0locale@2@A
_Cnd_signal
?always_noconv@codecvt_base@std@@QBE_NXZ
?in@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PBD1AAPBDPAD3AAPAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PBD1AAPBDPAD3AAPAD@Z
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QBEHAAU_Mbstatet@@PAD1AAPAD@Z
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SAIPAPBVfacet@locale@2@PBV42@@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QBE?AVlocale@2@XZ
?_Gndec@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEPADXZ
?_Gninc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEPADXZ
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?_Fiopen@std@@YAPAU_iobuf@@PBDHH@Z
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??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@H@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEAAV01@M@Z
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??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UAE@XZ
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??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@PAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IAE@XZ
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?pbase@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
?gptr@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IBEPADXZ
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?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEHXZ
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??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAE@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
?setp@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IAEXPAD0@Z
?_Xout_of_range@std@@YAXPBD@Z
?uncaught_exceptions@std@@YAHXZ
?_Getcvt@_Locinfo@std@@QBE?AU_Cvtvec@@XZ
?_Xlength_error@std@@YAXPBD@Z
?_Xbad_alloc@std@@YAXXZ
d3dx9_43
D3DXCreateTextureFromFileInMemory
imm32
ImmGetContext
ImmSetCompositionWindow
ImmReleaseContext
dbghelp
SymFromAddr
SymCleanup
urlmon
URLDownloadToFileA
winmm
PlaySoundA
vcruntime140
__std_exception_copy
__std_exception_destroy
_except_handler4_common
strstr
__std_terminate
__current_exception_context
__std_type_info_compare
__CxxFrameHandler3
memchr
memcpy
memmove
memset
_setjmp3
longjmp
_CxxThrowException
strrchr
__current_exception
_purecall
__std_type_info_destroy_list
api-ms-win-crt-runtime-l1-1-0
_beginthreadex
_invalid_parameter_noinfo_noreturn
abort
_seh_filter_dll
_configure_narrow_argv
_initialize_narrow_environment
_initterm_e
_initterm
_cexit
_crt_atexit
_execute_onexit_table
_register_onexit_function
_initialize_onexit_table
terminate
api-ms-win-crt-string-l1-1-0
toupper
strncmp
strncpy
api-ms-win-crt-math-l1-1-0
_dsign
log
cos
atan
_fdclass
remainderf
_dclass
_fdsign
_isnan
asin
_finite
modf
pow
atan2
_ldclass
floor
ceil
_ldsign
sqrt
fabs
fmaf
exp
fmaxf
sin
fmod
api-ms-win-crt-stdio-l1-1-0
fflush
fread
fseek
ftell
fwrite
__stdio_common_vsprintf
__stdio_common_vsscanf
__stdio_common_vsprintf_s
ungetc
setvbuf
_fseeki64
fsetpos
fgetpos
fgetc
_get_stream_buffer_pointers
fclose
fopen
fputc
_wfopen
api-ms-win-crt-heap-l1-1-0
malloc
free
_aligned_free
_callnewh
calloc
_aligned_malloc
api-ms-win-crt-utility-l1-1-0
rand
qsort
api-ms-win-crt-convert-l1-1-0
strtol
atof
api-ms-win-crt-locale-l1-1-0
localeconv
___lc_codepage_func
api-ms-win-crt-time-l1-1-0
strftime
_localtime64
_time64
clock
api-ms-win-crt-filesystem-l1-1-0
_lock_file
_unlock_file
remove
_stat64i32
Sections
.text Size: 1.4MB - Virtual size: 1.4MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 353KB - Virtual size: 352KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 436KB - Virtual size: 508KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 248B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 77KB - Virtual size: 76KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ