Kurome[.]Builder[.]exe

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General

Target

Kurome.Builder.exe
Size

132KB
MD5

c7c3251929e6bc150c1bbe47bcd07cd5
SHA1

56ba95f478b26607029aba7f64ceaa6fa464484e
SHA256

810067c4f3fd394cf7de9cd258767a30c4200e534f91f9586a7e36a24b8d7878
SHA512

c2e05181d14be41ed97e31636c5f0010c3ead190f28e2a57d7e55d309a6cea48de10945ec7be791cbc73d0626753226f7eef614126d46dc75de53e8e52986d8c
SSDEEP

1536:jKjgkll8NWAt3NmwzeIIIZkwZFf+BS3chuYhv7HaIODPAgugNyouBCOqOhOIicpH:jEFIgAFNmnIRpAiNuE0OIsu

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Kurome.Builder.exe

Files

Kurome.Builder.exe
.exe windows:4 windows x64 arch:x64

f5801e9becfb3e0041713ff3e62621c1

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

kernel32

CloseHandle
CreateProcessA
DeleteCriticalSection
EnterCriticalSection
GetLastError
InitializeCriticalSection
LeaveCriticalSection
SetUnhandledExceptionFilter
Sleep
TlsGetValue
VirtualProtect
VirtualQuery
WaitForSingleObject

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

__p__environ
__p__wenviron

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

_set_new_mode
calloc
free
malloc

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

__setusermatherr

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

__C_specific_handler
memcpy

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

__p___argc
__p___argv
__p___wargv
_cexit
_configure_narrow_argv
_configure_wide_argv
_crt_at_quick_exit
_crt_atexit
_exit
_initialize_narrow_environment
_initialize_wide_environment
_initterm
_set_app_type
_set_invalid_parameter_handler
abort
exit
signal

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

__acrt_iob_func
__p__commode
__p__fmode
__stdio_common_vfprintf
__stdio_common_vfwprintf
fwrite

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

strlen
strncmp

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

__daylight
__timezone
__tzname
_tzset

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 256B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 1024B - Virtual size: 600B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 512B - Virtual size: 472B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 384B

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 96B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 144B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/4
Size: 1024B - Virtual size: 1024B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/19
Size: 44KB - Virtual size: 43KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/31
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/45
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/57
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/70
Size: 1024B - Virtual size: 730B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/81
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/97
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/113
Size: 512B - Virtual size: 405B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f5801e9becfb3e0041713ff3e62621c1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

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

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

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

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

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

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

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

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

Sections

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

.data Size: 512B - Virtual size: 256B

.rdata Size: 3KB - Virtual size: 2KB

.pdata Size: 1024B - Virtual size: 600B

.xdata Size: 512B - Virtual size: 472B

.bss Size: - Virtual size: 384B

.idata Size: 2KB - Virtual size: 2KB

.CRT Size: 512B - Virtual size: 96B

.tls Size: 512B - Virtual size: 16B

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 144B

/4 Size: 1024B - Virtual size: 1024B

/19 Size: 44KB - Virtual size: 43KB

/31 Size: 8KB - Virtual size: 7KB

/45 Size: 7KB - Virtual size: 7KB

/57 Size: 3KB - Virtual size: 3KB

/70 Size: 1024B - Virtual size: 730B

/81 Size: 5KB - Virtual size: 5KB

/97 Size: 5KB - Virtual size: 4KB

/113 Size: 512B - Virtual size: 405B

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

.data
Size: 512B - Virtual size: 256B

.rdata
Size: 3KB - Virtual size: 2KB

.pdata
Size: 1024B - Virtual size: 600B

.xdata
Size: 512B - Virtual size: 472B

.bss
Size: - Virtual size: 384B

.idata
Size: 2KB - Virtual size: 2KB

.CRT
Size: 512B - Virtual size: 96B

.tls
Size: 512B - Virtual size: 16B

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 144B

/4
Size: 1024B - Virtual size: 1024B

/19
Size: 44KB - Virtual size: 43KB

/31
Size: 8KB - Virtual size: 7KB

/45
Size: 7KB - Virtual size: 7KB

/57
Size: 3KB - Virtual size: 3KB

/70
Size: 1024B - Virtual size: 730B

/81
Size: 5KB - Virtual size: 5KB

/97
Size: 5KB - Virtual size: 4KB

/113
Size: 512B - Virtual size: 405B