Kyro[.]exe | Triage

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General

Target

Kyro.exe
Size

2.2MB
MD5

a7b6482d2d2f8456db11f8ebeed91284
SHA1

043a8f0fa16ad62bbc9ac9ae36ee21d5144d2fea
SHA256

faffe8a6e4066762bc57b0ff1b06dd256b0cc36fc54d6f3986f516e17d287414
SHA512

b54661c2244b1723198157b9c0a37e294888bc6349229143f6b41140c58d2c1131bd89707ebb2570e58cdf914a0445135220fb9459d8a5a1a39f044740f63a3d
SSDEEP

24576:3zd1HKEh27tRswrJQ3V5t6aMdZ4AwSenI/zDlhQjKW0SyQMWEyJZFuQ5x3f3KWHL:3zdEJYkaMdCAFlhQP9MW7ZiWH5R

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Kyro.exe

Files

Kyro.exe
.exe windows:4 windows x86 arch:x86

22996d1937f33b2a3e9ee690582a2782

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

advapi32

CryptAcquireContextA
CryptGenRandom

gdi32

BitBlt
CreateBitmap
CreateCompatibleDC
CreateDIBSection
CreateEllipticRgn
CreateSolidBrush
DeleteDC
DeleteObject
GetBitmapBits
PatBlt
SelectClipRgn
SelectObject
SetBitmapBits
StretchBlt

kernel32

AddAtomA
AddVectoredExceptionHandler
CloseHandle
CreateEventA
CreateMutexA
CreateSemaphoreA
CreateThread
DeleteAtom
DeleteCriticalSection
DuplicateHandle
EnterCriticalSection
ExitProcess
FindAtomA
FormatMessageA
FreeLibrary
GetAtomNameA
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetHandleInformation
GetLastError
GetModuleHandleW
GetProcAddress
GetProcessAffinityMask
GetProcessHeap
GetStartupInfoA
GetSystemTimeAsFileTime
GetThreadContext
GetThreadPriority
GetTickCount
HeapAlloc
HeapFree
InitializeCriticalSection
IsDBCSLeadByteEx
IsDebuggerPresent
LeaveCriticalSection
LoadLibraryA
LoadLibraryW
LocalFree
MultiByteToWideChar
OpenProcess
OutputDebugStringA
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
ReleaseMutex
ReleaseSemaphore
RemoveVectoredExceptionHandler
ResetEvent
ResumeThread
SetEvent
SetLastError
SetProcessAffinityMask
SetThreadContext
SetThreadPriority
SetUnhandledExceptionFilter
Sleep
SuspendThread
TerminateThread
TlsAlloc
TlsGetValue
TlsSetValue
TryEnterCriticalSection
VirtualAlloc
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
WideCharToMultiByte

msvcrt

__getmainargs
__initenv
__lconv_init
__mb_cur_max
__p__acmdln
__p__commode
__p__fmode
__set_app_type
__setusermatherr
_amsg_exit
_beginthreadex
_cexit
_close
_endthreadex
_errno
_fdopen
_filelengthi64
_fileno
_fileno
_fstat64
_initterm
_iob
_lseeki64
_onexit
_read
_memccpy
_setjmp3
_strdup
_strnicmp
_ultoa
_wfopen
_write
abort
atoi
calloc
exit
fclose
fflush
fgetpos
fopen
fprintf
fputc
fputs
fread
free
fsetpos
fwrite
getc
getwc
isspace
iswctype
localeconv
longjmp
malloc
memchr
memcmp
memcpy
memmove
memset
printf
putc
putwc
rand
realloc
srand
setlocale
setvbuf
signal
strchr
strcmp
strcoll
strerror
strftime
strlen
strncmp
time
strxfrm
system
towlower
towupper
ungetc
ungetwc
vfprintf
wcscoll
wcsftime
wcslen
wcsxfrm

shell32

ExtractIconA

user32

DestroyIcon
DrawIconEx
GetDC
GetDesktopWindow
GetSystemMetrics
GetWindowRect
InvalidateRect
MessageBoxW
PrivateExtractIconsA
ReleaseDC

winmm

waveOutOpen
waveOutPrepareHeader
waveOutReset
waveOutUnprepareHeader
waveOutWrite

Sections

.text
Size: 919KB - Virtual size: 919KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 47KB - Virtual size: 47KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 3KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 31KB - Virtual size: 30KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/4
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/19
Size: 123KB - Virtual size: 122KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/31
Size: 22KB - Virtual size: 22KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/45
Size: 61KB - Virtual size: 61KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/57
Size: 15KB - Virtual size: 14KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/70
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/81
Size: 91KB - Virtual size: 91KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/92
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

22996d1937f33b2a3e9ee690582a2782

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

gdi32

kernel32

msvcrt

shell32

user32

winmm

Sections

.text Size: 919KB - Virtual size: 919KB

.data Size: 7KB - Virtual size: 6KB

.rdata Size: 47KB - Virtual size: 47KB

.bss Size: - Virtual size: 3KB

.idata Size: 5KB - Virtual size: 5KB

.CRT Size: 512B - Virtual size: 56B

.tls Size: 512B - Virtual size: 8B

.rsrc Size: 4KB - Virtual size: 4KB

.reloc Size: 31KB - Virtual size: 30KB

/4 Size: 2KB - Virtual size: 1KB

/19 Size: 123KB - Virtual size: 122KB

/31 Size: 22KB - Virtual size: 22KB

/45 Size: 61KB - Virtual size: 61KB

/57 Size: 15KB - Virtual size: 14KB

/70 Size: 3KB - Virtual size: 2KB

/81 Size: 91KB - Virtual size: 91KB

/92 Size: 5KB - Virtual size: 5KB

.text
Size: 919KB - Virtual size: 919KB

.data
Size: 7KB - Virtual size: 6KB

.rdata
Size: 47KB - Virtual size: 47KB

.bss
Size: - Virtual size: 3KB

.idata
Size: 5KB - Virtual size: 5KB

.CRT
Size: 512B - Virtual size: 56B

.tls
Size: 512B - Virtual size: 8B

.rsrc
Size: 4KB - Virtual size: 4KB

.reloc
Size: 31KB - Virtual size: 30KB

/4
Size: 2KB - Virtual size: 1KB

/19
Size: 123KB - Virtual size: 122KB

/31
Size: 22KB - Virtual size: 22KB

/45
Size: 61KB - Virtual size: 61KB

/57
Size: 15KB - Virtual size: 14KB

/70
Size: 3KB - Virtual size: 2KB

/81
Size: 91KB - Virtual size: 91KB

/92
Size: 5KB - Virtual size: 5KB