Static task
static1
Behavioral task
behavioral1
Sample
Fluster.Installer_JC.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
Fluster.Installer_JC.exe
Resource
win10v2004-20231020-en
General
-
Target
Fluster.Installer_JC.exe
-
Size
51KB
-
MD5
78e51501706ae662bb9ceb72f4099066
-
SHA1
a444dbcfdca5f12292d4ca6ac89f873018a2b5fe
-
SHA256
b502dbf2fb7a62f5c73c1f78965850025feeeeb0e2cb7ee7a5dfa1ddabff3940
-
SHA512
67775a7d80f12bffbfedf6d3e2c1fe2d03d5f83c87d4e9a802e423b72f30938ed355dc1a98e971d6e92c35ab1f9c80e6c5cf1ada9895ff6b78edf8cd426efb5f
-
SSDEEP
1536:piTAjuMKFRSV/ASOjaaFQ5Oqi7ST1dXS:ppjuMHVDSaaC9TTX
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Fluster.Installer_JC.exe
Files
-
Fluster.Installer_JC.exe.exe windows:6 windows x64
57b204e05e78f992b7c88bd418e4d857
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
wininet
InternetCloseHandle
InternetReadFile
HttpQueryInfoW
InternetOpenW
InternetOpenUrlA
kernel32
IsDebuggerPresent
GetConsoleScreenBufferInfo
SetConsoleTextAttribute
GetStdHandle
MoveFileA
WaitForSingleObject
GetLastError
DeleteFileW
GetModuleHandleW
CreateProcessW
CreateDirectoryA
GetExitCodeProcess
FindFirstFileA
FindNextFileA
FindClose
GetFileAttributesA
DeleteFileA
RemoveDirectoryA
GetCurrentThreadId
WakeAllConditionVariable
AcquireSRWLockExclusive
CloseHandle
ReleaseSRWLockExclusive
SleepConditionVariableSRW
RtlCaptureContext
GetCurrentProcessId
QueryPerformanceCounter
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
InitializeSListHead
RtlVirtualUnwind
RtlLookupFunctionEntry
GetSystemTimeAsFileTime
advapi32
FreeSid
CheckTokenMembership
AllocateAndInitializeSid
shell32
ShellExecuteW
msvcp140
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAV01@AEAV01@@Z@Z
?iword@ios_base@std@@QEAAAEAJH@Z
?xalloc@ios_base@std@@SAHXZ
?good@ios_base@std@@QEBA_NXZ
_Query_perf_frequency
??1_Lockit@std@@QEAA@XZ
??0_Lockit@std@@QEAA@H@Z
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Fiopen@std@@YAPEAU_iobuf@@PEBDHH@Z
?setprecision@std@@YA?AU?$_Smanip@_J@1@_J@Z
_Thrd_sleep
_Query_perf_counter
_Xtime_get_ticks
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
?in@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?out@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?xsgetn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEAD_J@Z
?xsputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JPEBD_J@Z
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAVios_base@1@AEAV21@@Z@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@N@Z
?write@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEBD_J@Z
??7ios_base@std@@QEBA_NXZ
?always_noconv@codecvt_base@std@@QEBA_NXZ
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
?_Xlength_error@std@@YAXPEBD@Z
?cerr@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?uncaught_exception@std@@YA_NXZ
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?clog@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z
?_Xout_of_range@std@@YAXPEBD@Z
??Bid@locale@std@@QEAA_KXZ
vcruntime140_1
__CxxFrameHandler4
vcruntime140
_CxxThrowException
__C_specific_handler
__current_exception
__std_exception_copy
__std_exception_destroy
__current_exception_context
memmove
__std_terminate
memcpy
memset
api-ms-win-crt-stdio-l1-1-0
_isatty
__stdio_common_vfprintf
fgetc
fgetpos
fclose
fflush
setvbuf
fputc
__p__commode
_fileno
fwrite
__acrt_iob_func
_set_fmode
_get_stream_buffer_pointers
_fseeki64
fread
fsetpos
ungetc
api-ms-win-crt-runtime-l1-1-0
_exit
_cexit
_c_exit
_register_thread_local_exe_atexit_callback
exit
_initterm_e
_invalid_parameter_noinfo_noreturn
_initialize_onexit_table
__p___argc
_crt_atexit
_initterm
terminate
_get_initial_narrow_environment
_initialize_narrow_environment
_configure_narrow_argv
system
_register_onexit_function
_seh_filter_exe
_set_app_type
__p___argv
api-ms-win-crt-heap-l1-1-0
_set_new_mode
free
_callnewh
malloc
api-ms-win-crt-string-l1-1-0
wcscpy_s
api-ms-win-crt-filesystem-l1-1-0
_lock_file
_stat64i32
_unlock_file
api-ms-win-crt-math-l1-1-0
__setusermatherr
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
Sections
.text Size: 27KB - Virtual size: 27KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1024B - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 164B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ