ducktail | MinecraftClient[.]exe

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General

Target
MinecraftClient.exe
Size 62.0MB
Sample240717-rb72daxbnf
SHA256 27df18b63a251cef7a70ed0c25edad7d4ba6a973daf74e6d18fc3e6e377bce44
MD5 308831dc31297f4b1a89a096afb2bacf
SHA1 1fe1e1307438b823a2f2e0bc7e21a07805c011f6
SHA512 be80a62e1aa7e5966ba7a394fa707ff7480086c015bc73a0ad4fdfe7fc0ab8b61a51f75b3691a2896f65fe5bab1d68e95cecab6c03152bfb761548ccc97f6b42
SSDEEP 393216:Vo2w9gN2K6qQMBvXsbweCDyikx+iEDyqo2s3Nbeq+xCKl3T32qXQoKSCSNl:62Mo2MJXkQkkp5B
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

ducktail

Malware Config

Signatures

Detect Ducktail Third Stage Payload 1 IoCs

resource	yara_rule
sample	ducktail_3rd_stage

Ducktail family
ducktail

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
MinecraftClient.exe

File Explorer

MinecraftClient.exe

.exe 62.0MB

MinecraftClient.exe

IMPHASH 72bc4dfff8905033c11dea0c671a7919
SHA256 27df18b63a251cef7a70ed0c25edad7d4ba6a973daf74e6d18fc3e6e377bce44
MD5 308831dc31297f4b1a89a096afb2bacf
SHA1 1fe1e1307438b823a2f2e0bc7e21a07805c011f6
SHA512 be80a62e1aa7e5966ba7a394fa707ff7480086c015bc73a0ad4fdfe7fc0ab8b61a51f75b3691a2896f65fe5bab1d68e95cecab6c03152bfb761548ccc97f6b42
SSDEEP 393216:Vo2w9gN2K6qQMBvXsbweCDyikx+iEDyqo2s3Nbeq+xCKl3T32qXQoKSCSNl:62Mo2MJXkQkkp5B
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

Detect Ducktail Third Stage Payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

82144

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA 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_LARGE_ADDRESS_AWARE

PDB paths

D:\a\_work\1\s\artifacts\obj\win-x64.Release\corehost\apphost\standalone\apphost.pdb

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 RtlPcToFileHeader RtlUnwindEx InitializeSListHead GetSystemTimeAsFileTime GetCurrentThreadId GetCurrentProcessId QueryPerformanceCounter IsDebuggerPresent IsProcessorFeaturePresent TerminateProcess SetUnhandledExceptionFilter UnhandledExceptionFilter RtlVirtualUnwind RtlLookupFunctionEntry RtlCaptureContext LCMapStringEx DecodePointer EncodePointer InitializeCriticalSectionEx GetStringTypeW

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW RegGetValueW DeregisterEventSource RegisterEventSourceW ReportEventW RegCloseKey

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

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

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

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

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

_set_new_mode _callnewh 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

wcstoul _wtoi

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

__setusermatherr frexp

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

_gmtime64_s wcsftime _time64

Name

.text

Size

102KB

Virtual Size

102KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

39KB

Virtual Size

39KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

2KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

5KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

1024B

Virtual Size

840B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

1.4MB

Virtual Size

1.4MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

MinecraftClient.exe

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

generic