Behavioral task
behavioral1
Sample
unpacked_nyxia external.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
unpacked_nyxia external.exe
Resource
win10v2004-20240508-en
General
-
Target
unpacked_nyxia external.exe
-
Size
9.0MB
-
MD5
344f9089ce3473e3663fed11c26030e6
-
SHA1
8b717176121901ee47630226e29c73bbfa0fbbbb
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SHA256
da76319054ad7b1c8fc699e3c76a502fa3f8bef7e163246fc458c4b85e0a9791
-
SHA512
b9659452acc18c26ae196d214cf9e7f5ab5e7de9fc2527b3df1de1923bf54e936eb86f57b753dace1ab8a07a82d9ff9713a6739dd50c3466ac32a68cd365bd7b
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SSDEEP
98304:8OHkDlYCYqhMDF1pTVEypn0l2sD8ypGOV0sPuvpsSIaM50tZjlBtB4I:8RYpqkTVEsnuBVnPEsL6jPA
Malware Config
Signatures
-
resource yara_rule sample themida -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpacked_nyxia external.exe
Files
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unpacked_nyxia external.exe.exe windows:6 windows x64 arch:x64
fc237815796e50d24e9a90c9d4b35390
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
Process32First
WriteProcessMemory
SetConsoleTitleA
GetCurrentProcess
GetProcessId
Thread32Next
Thread32First
LocalAlloc
SuspendThread
ResumeThread
GetModuleHandleA
OpenProcess
CreateToolhelp32Snapshot
Sleep
Process32Next
CloseHandle
GetSystemInfo
GetProcAddress
LocalFree
ReadProcessMemory
GetConsoleWindow
K32EnumProcessModules
GetProcessHandleCount
OpenThread
VirtualQueryEx
GetExitCodeProcess
RtlLookupFunctionEntry
GetModuleHandleW
IsDebuggerPresent
InitializeSListHead
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
RtlCaptureContext
msvcp140
?_Fiopen@std@@YAPEAU_iobuf@@PEBDHH@Z
?id@?$ctype@D@std@@2V0locale@2@A
?_Xlength_error@std@@YAXPEBD@Z
?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAXXZ
?_Ipfx@?$basic_istream@DU?$char_traits@D@std@@@std@@QEAA_N_N@Z
?_Getcat@?$codecvt@DDU_Mbstatet@@@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?snextc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
?sputn@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAA_JPEBD_J@Z
?put@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@D@Z
?flush@?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAAAEAV12@XZ
?widen@?$basic_ios@DU?$char_traits@D@std@@@std@@QEBADD@Z
?getloc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEBA?AVlocale@2@XZ
?sbumpc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
?sputc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHD@Z
?unshift@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEAD1AEAPEAD@Z
??0?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAA@XZ
?cerr@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
??0?$basic_ostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@_N@Z
??0?$basic_istream@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@?$codecvt@DDU_Mbstatet@@@std@@QEBAHAEAU_Mbstatet@@PEBD1AEAPEBDPEAD3AEAPEAD@Z
?setstate@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z
??0?$basic_ios@DU?$char_traits@D@std@@@std@@IEAA@XZ
??0?$basic_iostream@DU?$char_traits@D@std@@@std@@QEAA@PEAV?$basic_streambuf@DU?$char_traits@D@std@@@1@@Z
??1?$basic_streambuf@DU?$char_traits@D@std@@@std@@UEAA@XZ
?ReportUnhandledError@_ExceptionHolder@details@Concurrency@@AEAAXXZ
?ReportUnhandledError@_ExceptionHolder@details@Concurrency@@AEAAXXZ
?do_encoding@?$codecvt@_SDU_Mbstatet@@@std@@MEBAHXZ
?uflow@?$basic_streambuf@DU?$char_traits@D@std@@@std@@MEAAHXZ
?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
??4?$_Iosb@H@std@@QEAAAEAV01@$$QEAV01@@Z
?do_encoding@?$codecvt@_SDU_Mbstatet@@@std@@MEBAHXZ
?ReportUnhandledError@_ExceptionHolder@details@Concurrency@@AEAAXXZ
??1?$basic_ios@DU?$char_traits@D@std@@@std@@UEAA@XZ
??1?$basic_ostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??5?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@P6AAEAV01@AEAV01@@Z@Z
??1?$basic_istream@DU?$char_traits@D@std@@@std@@UEAA@XZ
??5?$basic_istream@DU?$char_traits@D@std@@@std@@QEAAAEAV01@AEAH@Z
??1?$basic_iostream@DU?$char_traits@D@std@@@std@@UEAA@XZ
?getloc@ios_base@std@@QEBA?AVlocale@2@XZ
?good@ios_base@std@@QEBA_NXZ
??Bios_base@std@@QEBA_NXZ
?_Getcat@?$ctype@D@std@@SA_KPEAPEBVfacet@locale@2@PEBV42@@Z
?always_noconv@codecvt_base@std@@QEBA_NXZ
??Bid@locale@std@@QEAA_KXZ
?cin@std@@3V?$basic_istream@DU?$char_traits@D@std@@@1@A
?_Getgloballocale@locale@std@@CAPEAV_Locimp@12@XZ
?cout@std@@3V?$basic_ostream@DU?$char_traits@D@std@@@1@A
?uncaught_exceptions@std@@YAHXZ
??0_Lockit@std@@QEAA@H@Z
??1_Lockit@std@@QEAA@XZ
?id@?$codecvt@DDU_Mbstatet@@@std@@2V0locale@2@A
?_Init@?$basic_streambuf@DU?$char_traits@D@std@@@std@@IEAAXXZ
user32
SetWindowPos
MessageBoxA
vcruntime140
__current_exception_context
memcpy
memcpy
memcmp
memset
__std_exception_destroy
__std_exception_copy
__std_terminate
__C_specific_handler
_CxxThrowException
__current_exception
vcruntime140_1
__CxxFrameHandler4
ucrtbase
_unlock_file
_lock_file
free
malloc
_callnewh
_set_new_mode
_configthreadlocale
__setusermatherr
_Exit
abort
__p___argc
__p___argv
_get_initial_narrow_environment
_c_exit
_register_thread_local_exe_atexit_callback
_initialize_narrow_environment
_initterm_e
system
_initialize_onexit_table
_register_onexit_function
_crt_atexit
terminate
_configure_narrow_argv
_set_app_type
_seh_filter_exe
exit
_initterm
_invalid_parameter_noinfo_noreturn
_cexit
fsetpos
ungetc
_get_stream_buffer_pointers
setvbuf
fgetpos
fwrite
_set_fmode
fread
__p__commode
fgetc
fclose
fflush
_fseeki64
fputc
_stricmp
Sections
.text Size: 20KB - Virtual size: 24KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
Size: 11KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Size: 1KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
Size: 1KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.idata Size: 1024B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.themida Size: 5.7MB - Virtual size: 5.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.boot Size: 3.3MB - Virtual size: 3.3MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.SCY Size: 7KB - Virtual size: 8KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE