YiffVirus[.]exe

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General

Target

YiffVirus.exe
Size

1.5MB
MD5

0b14890d3a105260514d1268626fd328
SHA1

5eb86bfefbcd1b41af9a27a220e0a0d974f06d0a
SHA256

7f16acb9decc3989dfa45427dffd88f19731704cac7b34fd4edb41217f6f355b
SHA512

03ede6dce843f7016a200ec4cab6bc198e694c60bc58f785b7c853cfd31c32e87773e417651a1443d52eb906b698ad603ad8745c78ee4d9409f9071d255d00c0
SSDEEP

24576:IGN7k50/POdGV5jfW5VnhFyvOB7jW5JMti2SklkmwocJx3Q:IikzoOB7jTlkmwS

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
YiffVirus.exe

Files

YiffVirus.exe
.exe windows:6 windows x86 arch:x86

bf1462ce2cfa173883d7ac57d7af7b93

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\Release\apphost.pdb

Imports

kernel32

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

user32

MessageBoxW

shell32

ShellExecuteW

advapi32

RegOpenKeyExW
RegCloseKey
ReportEventW
RegisterEventSourceW
DeregisterEventSource
RegGetValueW

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

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

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

calloc
free
_set_new_mode
_callnewh
malloc

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

frexp
__setusermatherr

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

_set_fmode
__stdio_common_vsprintf_s
__p__commode
fflush
_wfopen
__stdio_common_vfwprintf
fputws
fclose
fread
fseek
fwrite
__acrt_iob_func
fputwc
__stdio_common_vswprintf

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

strcpy_s
memset
strcspn
wcsncmp
_wcsicmp
_wcsnicmp
wcsnlen
_wcsdup

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

__pctype_func
setlocale
___mb_cur_max_func
___lc_codepage_func
___lc_locale_name_func
localeconv
_unlock_locales
_lock_locales
_configthreadlocale

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

_wrename
_wremove

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

wcstoul
_wtoi

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

_time64
wcsftime
_gmtime64

Sections

.text
Size: 84KB - Virtual size: 83KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 39KB - Virtual size: 38KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 792B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 6KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

bf1462ce2cfa173883d7ac57d7af7b93

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

user32

shell32

advapi32

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

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

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

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

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

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

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

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

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

Sections

.text Size: 84KB - Virtual size: 83KB

.rdata Size: 39KB - Virtual size: 38KB

.data Size: 3KB - Virtual size: 4KB

.rsrc Size: 1024B - Virtual size: 792B

.reloc Size: 6KB - Virtual size: 6KB

.text
Size: 84KB - Virtual size: 83KB

.rdata
Size: 39KB - Virtual size: 38KB

.data
Size: 3KB - Virtual size: 4KB

.rsrc
Size: 1024B - Virtual size: 792B

.reloc
Size: 6KB - Virtual size: 6KB