WB3
Static task
static1
Behavioral task
behavioral1
Sample
stellar.exe
Resource
win10-20240221-en
Behavioral task
behavioral2
Sample
stellar.exe
Resource
win10v2004-20240226-en
General
-
Target
stellar.exe
-
Size
1.6MB
-
MD5
fd964b4920681c66d70298bf32acfeb3
-
SHA1
0546dc6c06e0a52839012c7a29be286e28ca01a6
-
SHA256
a35648864edd619e7c6066d2e9a28f215e560237d2f3a0253ccc85fecdcb10de
-
SHA512
9d39948d047701098690dee06c34c137f04f816602f6605986725a6aa902528df160bf16e39537768a1a05ef4006207147be9afa34a8b1f6d0d9b22dc93469c4
-
SSDEEP
6144:Cn8OOiDDZ4NmJojORZWOOiDDZ4NmJojORZAOOiDDZ4NmJojORZKW1vAIQoJ0C+D0:CnViaiiiGTj7aMU8o+0iu8F4bgc
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource stellar.exe
Files
-
stellar.exe.exe windows:6 windows x64 arch:x64
f32970e1b29cfdd601f8fef5307699e8
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
PDB Paths
Imports
libcrypto-3-x64
SHA256_Update
SHA256_Final
SHA256_Init
MD5
BIO_new
BIO_write
BIO_ctrl
BIO_push
BIO_free_all
BIO_s_mem
BIO_set_flags
ERR_print_errors_fp
EVP_aes_256_cbc
BIO_f_base64
EVP_CIPHER_CTX_free
EVP_CIPHER_CTX_new
EVP_DecryptFinal_ex
EVP_DecryptUpdate
EVP_DecryptInit_ex
kernel32
VirtualProtect
GetModuleHandleW
GetCurrentThread
InitializeSListHead
GetSystemTimeAsFileTime
QueryPerformanceCounter
GetStartupInfoW
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
SetLastError
Sleep
VirtualAlloc
GetProcAddress
LoadLibraryA
lstrcpyA
lstrcpyW
lstrlenW
IsDebuggerPresent
GetCurrentProcess
OpenProcess
QueryFullProcessImageNameA
ReadProcessMemory
K32GetModuleInformation
Module32NextW
GetCurrentProcessId
Module32FirstW
GetCurrentThreadId
CloseHandle
Process32FirstW
Process32NextW
GetLastError
CreateToolhelp32Snapshot
SuspendThread
ResumeThread
GetThreadContext
SetThreadContext
FlushInstructionCache
VirtualFree
VirtualQuery
shell32
CommandLineToArgvW
msvcp140
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXPEAPEAD0PEAH001@Z
?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
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
?tie@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBAPEAV?$basic_ostream@DU?$char_traits@D@std@@@2@XZ
?rdbuf@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBAPEAV?$basic_streambuf@DU?$char_traits@D@std@@@2@XZ
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAV01@AEAV01@@Z@Z
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
??0?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
??1?$basic_istream@DU?$char_traits@D@std@@@std@@UEAA@XZ
?read@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@PEAD_J@Z
?seekg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@_JH@Z
?tellg@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA?AV?$fpos@U_Mbstatet@@@2@XZ
?_Fiopen@std@@YAPEAU_iobuf@@PEBDHH@Z
?showmanyc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAA_JXZ
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?cerr@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?setw@std@@YA?AU?$_Smanip@_J@1@_J@Z
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAAXXZ
?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?setbuf@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAPEAV12@PEAD_J@Z
?sync@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?imbue@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAXAEBVlocale@2@@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAVios_base@1@AEAV21@@Z@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@H@Z
??6?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??Bios_base@std@@QEBA_NXZ
_Query_perf_frequency
_Thrd_sleep
_Query_perf_counter
_Xtime_get_ticks
?sputn@?$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?$char_traits@D@std@@@std@@IEAA@XZ
?width@ios_base@std@@QEAA_J_J@Z
?width@ios_base@std@@QEBA_JXZ
?flags@ios_base@std@@QEBAHXZ
?good@ios_base@std@@QEBA_NXZ
??7ios_base@std@@QEBA_NXZ
?_Getcat@?$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@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?always_noconv@codecvt_base@std@@QEBA_NXZ
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
??Bid@locale@std@@QEAA_KXZ
?_Throw_Cpp_error@std@@YAXH@Z
_Cnd_do_broadcast_at_thread_exit
_Thrd_detach
?uncaught_exceptions@std@@YAHXZ
??1_Lockit@std@@QEAA@XZ
??0_Lockit@std@@QEAA@H@Z
?_Xlength_error@std@@YAXPEBD@Z
?fill@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADXZ
urlmon
URLDownloadToFileA
ntdll
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
vcruntime140
_CxxThrowException
__std_exception_destroy
memset
memcmp
memcpy
__C_specific_handler
__current_exception
__current_exception_context
__std_exception_copy
memmove
vcruntime140_1
__CxxFrameHandler4
api-ms-win-crt-runtime-l1-1-0
_get_narrow_winmain_command_line
_initterm
_initterm_e
_exit
_crt_atexit
_register_thread_local_exe_atexit_callback
_seh_filter_exe
_c_exit
_invalid_parameter_noinfo_noreturn
terminate
_beginthreadex
_cexit
_register_onexit_function
_initialize_onexit_table
_initialize_narrow_environment
abort
_set_app_type
_configure_narrow_argv
exit
api-ms-win-crt-stdio-l1-1-0
__stdio_common_vsprintf
__acrt_iob_func
fclose
_set_fmode
__p__commode
_get_stream_buffer_pointers
ungetc
setvbuf
fwrite
_fseeki64
fsetpos
fread
fputc
fgetpos
fgetc
fflush
api-ms-win-crt-heap-l1-1-0
free
malloc
_set_new_mode
_callnewh
api-ms-win-crt-string-l1-1-0
_stricmp
api-ms-win-crt-filesystem-l1-1-0
_unlock_file
_lock_file
api-ms-win-crt-time-l1-1-0
_gmtime64_s
api-ms-win-crt-math-l1-1-0
__setusermatherr
api-ms-win-crt-locale-l1-1-0
_configthreadlocale
Sections
WB3 Size: 1.6MB - Virtual size: 1.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
WB3 Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
WB3 Size: 1KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
WB3 Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
WB3 Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
WB3 Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
WB3 Size: 512B - Virtual size: 488B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
WB3 Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ