MeltyInstaller[.]exe

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General

Target

MeltyInstaller.exe
Size

131.1MB
MD5

ae45437d533bcc1a6978b5bf08285612
SHA1

6cdb4c6215aadb03793a1267af09f72f0423ea3e
SHA256

32ec89d9efeb5d263fc1fea5cc5709c3fd17f0c543e4980beaf7db219817daf9
SHA512

f1bed52237f939305b606a7b8c803987a185f6a05132cc426977fd234425ef83d45e64b817f25ab7e9d139b35c8417ebecb3fd01dfa2c6f115880e1a26a706de
SSDEEP

1572864:1ie8wWSrN5GS5iNjEBkqYnIgJM0cAZa7SGTAcA6898ygNQvoL0uyMLGp7WTDNyyA:sSt4ep4tw5klJp

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
MeltyInstaller.exe

Files

MeltyInstaller.exe
.exe windows:6 windows x86 arch:x86

34dc34e244a6f4378a06076ff16fc082

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:\workspace\_work\1\s\artifacts\obj\win-x86.Release\corehost\cli\apphost\static\Release\singlefilehost.pdb

Imports

kernel32

FindNextFileW
GetCurrentProcess
GetModuleHandleExW
GetModuleFileNameW
LeaveCriticalSection
InitializeCriticalSection
GetEnvironmentVariableW
GetTempPathW
FindClose
CreateFileW
MultiByteToWideChar
GetLastError
GetFileAttributesExW
LoadLibraryA
CloseHandle
GetCurrentDirectoryW
GetProcAddress
DeleteCriticalSection
WideCharToMultiByte
CreateFileMappingW
MapViewOfFile
IsWow64Process
LoadLibraryExW
RemoveDirectoryW
Sleep
GetCurrentProcessId
UnmapViewOfFile
GetFullPathNameW
SetEvent
ResetEvent
WaitForSingleObjectEx
CreateEventW
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlUnwind
RaiseException
SetLastError
EncodePointer
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
EnterCriticalSection
GetModuleHandleW
FindFirstFileExW
GetFileSizeEx
CreateDirectoryW
OutputDebugStringW
InitializeCriticalSectionAndSpinCount
GetStringTypeW
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableCS
SleepConditionVariableSRW
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
InitializeCriticalSectionEx
TryEnterCriticalSection
GetExitCodeThread
DecodePointer
LCMapStringEx

advapi32

RegCloseKey
RegOpenKeyExW
RegGetValueW
DeregisterEventSource
ReportEventW
RegisterEventSourceW

user32

MessageBoxW

shell32

ShellExecuteW

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

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

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

_get_stream_buffer_pointers
_fseeki64
fread
fsetpos
ungetc
__p__commode
fgetpos
fgetc
fputc
fwrite
fclose
fputwc
fputws
fflush
__stdio_common_vfwprintf
fseek
__stdio_common_vsprintf_s
_wfsopen
__acrt_iob_func
_set_fmode
__stdio_common_vswprintf
_wfopen
setvbuf

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

realloc
_callnewh
calloc
malloc
free
_set_new_mode

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

_wcsicmp
_wcsnicmp
wcsncmp
strcspn
towlower
_wcsdup
isupper
islower
strcpy_s
wcsnlen
__strncnt

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

_wtoi
wcstoul

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

_lock_locales
_unlock_locales
setlocale
__pctype_func
___lc_locale_name_func
_configthreadlocale
localeconv
___lc_codepage_func
___mb_cur_max_func

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

ceil
frexp
__setusermatherr

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

_time64
wcsftime
_gmtime64

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

_wrename
_unlock_file
_lock_file
_wremove

Exports

Exports

corehost_initialize
corehost_load
corehost_main
corehost_main_with_output_buffer
corehost_resolve_component_dependencies
corehost_set_error_writer
corehost_unload
hostfxr_close
hostfxr_get_available_sdks
hostfxr_get_native_search_directories
hostfxr_get_runtime_delegate
hostfxr_get_runtime_properties
hostfxr_get_runtime_property_value
hostfxr_initialize_for_dotnet_command_line
hostfxr_initialize_for_runtime_config
hostfxr_main
hostfxr_main_bundle_startupinfo
hostfxr_main_startupinfo
hostfxr_resolve_sdk
hostfxr_resolve_sdk2
hostfxr_run_app
hostfxr_set_error_writer
hostfxr_set_runtime_property_value

Sections

.text
Size: 221KB - Virtual size: 221KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 91KB - Virtual size: 90KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 63KB - Virtual size: 63KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

34dc34e244a6f4378a06076ff16fc082

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

user32

shell32

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

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

Exports

Exports

Sections

.text Size: 221KB - Virtual size: 221KB

.rdata Size: 91KB - Virtual size: 90KB

.data Size: 4KB - Virtual size: 6KB

.rsrc Size: 63KB - Virtual size: 63KB

.reloc Size: 12KB - Virtual size: 11KB

.text
Size: 221KB - Virtual size: 221KB

.rdata
Size: 91KB - Virtual size: 90KB

.data
Size: 4KB - Virtual size: 6KB

.rsrc
Size: 63KB - Virtual size: 63KB

.reloc
Size: 12KB - Virtual size: 11KB