Nezur_Loader[.]zip

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General

Target

Nezur_Loader.zip
Size

8.8MB
MD5

1ea6ea685174da5b36129323d43676ec
SHA1

13c46b22a4be5ea2962ae54221f6f09f6e10bdf0
SHA256

097a53e8e772e0f6a3a46aeba027416fa8ce0a88bf0c64abf47e7a2777f961a1
SHA512

20e1f5f8fc8c4dad586195e73fb93484885775f935db276a8b9dfd5fe04204fd93205c7a70e8ae465ad80290c5860c31a768abc4aa53c977987bb2fa8d8c82b3
SSDEEP

196608:px1/9Q+70w391fwi+3FeVIAEpoA6oURrpg1ObKWD62miV39breH+NMQIV2MOzpfZ:X/Q+70Ufwia83Eporpg18KWtmiVVreeV

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Nezur.exe

Files

Nezur_Loader.zip
.zip
Nezur.exe
.exe windows:6 windows x86 arch:x86

4bf589bb9b0cd34b1e268120ba996e90

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

D:\a\_work\1\s\artifacts\obj\win-x86.Release\corehost\apphost\standalone\apphost.pdb

Imports

kernel32

FindNextFileW
GetCurrentProcess
GetModuleHandleExW
GetModuleFileNameW
LeaveCriticalSection
InitializeCriticalSection
GetEnvironmentVariableW
FindClose
MultiByteToWideChar
GetLastError
GetFileAttributesExW
GetFullPathNameW
GetProcAddress
DeleteCriticalSection
WideCharToMultiByte
IsWow64Process
LoadLibraryExW
FreeLibrary
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
EnterCriticalSection
FindFirstFileExW
OutputDebugStringW
LoadLibraryA
GetModuleHandleW
InitializeCriticalSectionAndSpinCount
SetLastError
RaiseException
RtlUnwind
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
IsDebuggerPresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsProcessorFeaturePresent
LCMapStringEx
DecodePointer
EncodePointer
InitializeCriticalSectionEx
GetStringTypeW

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW
RegGetValueW
DeregisterEventSource
RegisterEventSourceW
ReportEventW
RegCloseKey

api-ms-win-crt-runtime-l1-1-0

_crt_atexit
_invalid_parameter_noinfo_noreturn
__p___argc
__p___wargv
_exit
exit
_initterm_e
_errno
_initterm
_get_initial_wide_environment
_c_exit
_configure_wide_argv
_controlfp_s
_set_app_type
_register_onexit_function
_register_thread_local_exe_atexit_callback
_initialize_onexit_table
abort
_cexit
_initialize_wide_environment
terminate
_seh_filter_exe

api-ms-win-crt-stdio-l1-1-0

_set_fmode
__stdio_common_vsprintf_s
setvbuf
__stdio_common_vswprintf
__acrt_iob_func
fputwc
__p__commode
fputws
__stdio_common_vsnwprintf_s
_wfsopen
fflush
__stdio_common_vfwprintf

api-ms-win-crt-heap-l1-1-0

_callnewh
_set_new_mode
free
malloc
calloc

api-ms-win-crt-string-l1-1-0

wcsnlen
strcpy_s
_wcsdup
strcspn
wcsncmp
toupper

api-ms-win-crt-convert-l1-1-0

_wtoi
wcstoul

api-ms-win-crt-locale-l1-1-0

__pctype_func
_unlock_locales
_lock_locales
___lc_locale_name_func
___lc_codepage_func
___mb_cur_max_func
_configthreadlocale
setlocale
localeconv

api-ms-win-crt-math-l1-1-0

_dclass
__setusermatherr
frexp
_ldclass

api-ms-win-crt-time-l1-1-0

_gmtime64_s
wcsftime
_time64

Sections

.text
Size: 78KB - Virtual size: 77KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 28KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.rsrc
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

4bf589bb9b0cd34b1e268120ba996e90

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

shell32

advapi32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-time-l1-1-0

Sections

.text Size: 78KB - Virtual size: 77KB

.rdata Size: 28KB - Virtual size: 28KB

.data Size: 2KB - Virtual size: 3KB

.reloc Size: 5KB - Virtual size: 4KB

.rsrc Size: 9KB - Virtual size: 8KB

.text
Size: 78KB - Virtual size: 77KB

.rdata
Size: 28KB - Virtual size: 28KB

.data
Size: 2KB - Virtual size: 3KB

.reloc
Size: 5KB - Virtual size: 4KB

.rsrc
Size: 9KB - Virtual size: 8KB