redtiger | Bloxstrap[.]exe

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General

Target
Bloxstrap.exe
Size 12.1MB
Sample250103-cwne5svqhs
SHA256 44c24e0bd6d7c55fa04e6b54af159e81a9a260e42f50886c6f0918d710df4361
MD5 46295c1d8df5f85c221128c535ea2db3
SHA1 4c73ff010dbd6aa0d8011ed97c26332c4db59c51
SHA512 30eb4c36c154435a99c03c8cd685fb72c458e1877f7d69d4d800df6643bea508faeae90d9e863e18799382bd64b61f029464913e345220062fc7d34aeba0285b
SSDEEP 98304:taM/VGMTsAd5DwasGUsy/vGWD39ALOYoHwfLk3vSmaR0+Mc4AN0edaAHDfysrTls:taM/V7sisGUv/vGPLObAbN0h
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealer redtiger

Malware Config

Signatures

Detects RedTiger Stealer 7 IoCs

stealer

resource	yara_rule
sample	redtigerv122
sample	redtigerv22
sample	redtiger_stealer_detection
sample	redtiger_stealer_detection_v2
sample	staticSred
sample	staticred
sample	redtiger_stealer_detection_v1

Redtiger family
redtiger

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Bloxstrap.exe

File Explorer

Bloxstrap.exe

.exe 12.1MB

Bloxstrap.exe

IMPHASH a8308de57fce070f4cb88c7f43bf4b27
SHA256 44c24e0bd6d7c55fa04e6b54af159e81a9a260e42f50886c6f0918d710df4361
MD5 46295c1d8df5f85c221128c535ea2db3
SHA1 4c73ff010dbd6aa0d8011ed97c26332c4db59c51
SHA512 30eb4c36c154435a99c03c8cd685fb72c458e1877f7d69d4d800df6643bea508faeae90d9e863e18799382bd64b61f029464913e345220062fc7d34aeba0285b
SSDEEP 98304:taM/VGMTsAd5DwasGUsy/vGWD39ALOYoHwfLk3vSmaR0+Mc4AN0edaAHDfysrTls:taM/V7sisGUv/vGPLObAbN0h
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

Detects RedTiger Stealer

stealer
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

82000

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW RegGetValueW DeregisterEventSource RegisterEventSourceW ReportEventW RegCloseKey

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

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

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

__p__commode __stdio_common_vsprintf_s setvbuf _wfopen _set_fmode __stdio_common_vswprintf __acrt_iob_func fputwc fputws __stdio_common_vfwprintf fflush

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 localeconv _lock_locales ___lc_codepage_func ___mb_cur_max_func _configthreadlocale setlocale ___lc_locale_name_func

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

97KB

Virtual Size

97KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

38KB

Virtual Size

37KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

2KB

Virtual Size

6KB

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

244B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

1024B

Virtual Size

792B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.rsrc

Size

202KB

Virtual Size

202KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

Bloxstrap.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