blankgrabber | Built[.]exe

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General

Target

Built.exe
Size

8.2MB
MD5

3f21067af65ef164255fbee97661fd3d
SHA1

ffe7c3bac38f966245e3de03a7d8ac9412a74afe
SHA256

e89ebb7c615c2148ea5d0b81ec78421dd6e63902780eed4a078cc39fa2b65b2b
SHA512

3a1ff2e5b6a0d5e78036a55ff749aa9de0eeca803aad198a7ae56ecd941fecb153bb24636888396cd9f0594731a759a0b0b14c68698510b29225a2bfdeb924b8
SSDEEP

196608:2DRkdsRkwfI9jUCBB7m+mKOY7rXrZu6SELooDmhfvsbnTNWi:2aebIHL7HmBYXrkRoaUN9

Score

10^/10

blankgrabber

Malware Config

Signatures

A stealer written in Python and packaged with Pyinstaller 1 IoCs

resource	yara_rule
static1/unpack001/.pyc	blankgrabber

Blankgrabber family
blankgrabber

Files

Built.exe
.exe windows:4 windows x64 arch:x64

a5baa73a64e9cb8b535a8f18a8bbc957

Code Sign

33:00:00:04:5f:f3:c9:6c:1a:7f:f7:da:1d:00:00:00:00:04:5f
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

16-11-2023 19:20

Not After

14-11-2024 19:20

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19-10-2011 18:41

Not After

19-10-2026 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

d5:54:b8:34:29:95:61:48:8c:a9:9a:31:3f:dc:61:d2:e3:53:42:34:3c:c3:82:1a:78:f9:c2:93:43:a1:ae:8b
Signer

Actual PE Digest

d5:54:b8:34:29:95:61:48:8c:a9:9a:31:3f:dc:61:d2:e3:53:42:34:3c:c3:82:1a:78:f9:c2:93:43:a1:ae:8b

Digest Algorithm

sha256

PE Digest Matches

false

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_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

advapi32

ConvertSidToStringSidW
ConvertStringSecurityDescriptorToSecurityDescriptorW
GetTokenInformation
OpenProcessToken

comctl32

LoadIconMetric

gdi32

CreateFontIndirectW
DeleteObject
SelectObject

kernel32

AreFileApisANSI
CloseHandle
CreateDirectoryW
CreateFileW
CreateProcessW
CreateSymbolicLinkW
DeleteCriticalSection
DeleteFileW
EnterCriticalSection
ExpandEnvironmentStringsW
FindClose
FindFirstFileExW
FindFirstFileW
FindNextFileW
FormatMessageW
FreeLibrary
GetCommandLineW
GetCurrentProcess
GetDriveTypeW
GetEnvironmentVariableW
GetExitCodeProcess
GetFinalPathNameByHandleW
GetLastError
GetModuleFileNameW
GetModuleHandleW
GetProcAddress
GetStartupInfoW
GetTempPathW
InitializeCriticalSection
IsDBCSLeadByteEx
K32EnumProcessModules
K32GetModuleFileNameExW
LeaveCriticalSection
LoadLibraryExW
LocalFree
MulDiv
MultiByteToWideChar
QueryPerformanceCounter
QueryPerformanceFrequency
RemoveDirectoryW
SetConsoleCtrlHandler
SetDllDirectoryW
SetUnhandledExceptionFilter
Sleep
TerminateProcess
TlsGetValue
VirtualProtect
VirtualQuery
WaitForSingleObject
WideCharToMultiByte
__C_specific_handler

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

mbstowcs
strtoul

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

__p__wenviron
_wputenv_s

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

_wfullpath
_wstat64

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

_set_new_mode
calloc
free
malloc
realloc

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

__setusermatherr

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

memcmp
memcpy
strchr
wcschr

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

__p___argc
__p___wargv
__p__wcmdln
_cexit
_configure_wide_argv
_crt_atexit
_errno
_exit
_getpid
_initialize_wide_environment
_initterm
_set_app_type
_set_invalid_parameter_handler
_wcserror
abort
exit
signal
strerror

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

__acrt_iob_func
__p__commode
__p__fmode
__stdio_common_vfprintf
__stdio_common_vsprintf
__stdio_common_vswprintf
_fileno
_get_osfhandle
_wfopen
_wtempnam
clearerr
fclose
feof
ferror
fflush
fread
fseek
ftell
fwrite
setbuf

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

_strdup
_stricmp
_wcsdup
_wcsdup
_wcsnicmp
iswctype
memset
strcmp
strcpy
strlen
strncat
strncmp
wcscat
wcscmp
wcslen
wcsncmp

user32

CreateWindowExW
DefWindowProcW
DestroyIcon
DestroyWindow
DialogBoxIndirectParamW
DispatchMessageW
DrawTextW
EndDialog
GetClientRect
GetDC
GetDialogBaseUnits
GetMessageW
GetWindowLongPtrW
InvalidateRect
MessageBoxA
MessageBoxW
MoveWindow
MsgWaitForMultipleObjects
PeekMessageW
PostMessageW
RegisterClassW
ReleaseDC
SendMessageW
SetWindowLongPtrW
ShowWindow
ShutdownBlockReasonCreate
SystemParametersInfoW
TranslateMessage

Sections

.text
Size: 58KB - Virtual size: 57KB

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: 27KB - Virtual size: 26KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 13KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

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: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 300B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.pyc

Sharing

General

Malware Config

Signatures

Files

a5baa73a64e9cb8b535a8f18a8bbc957

Code Sign

33:00:00:04:5f:f3:c9:6c:1a:7f:f7:da:1d:00:00:00:00:04:5fCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

d5:54:b8:34:29:95:61:48:8c:a9:9a:31:3f:dc:61:d2:e3:53:42:34:3c:c3:82:1a:78:f9:c2:93:43:a1:ae:8bSigner

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

comctl32

gdi32

kernel32

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

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

api-ms-win-crt-filesystem-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

user32

Sections

.text Size: 58KB - Virtual size: 57KB

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

.rdata Size: 27KB - Virtual size: 26KB

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

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

.bss Size: - Virtual size: 13KB

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

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

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

.rsrc Size: 3KB - Virtual size: 3KB

.reloc Size: 512B - Virtual size: 300B

33:00:00:04:5f:f3:c9:6c:1a:7f:f7:da:1d:00:00:00:00:04:5f
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

d5:54:b8:34:29:95:61:48:8c:a9:9a:31:3f:dc:61:d2:e3:53:42:34:3c:c3:82:1a:78:f9:c2:93:43:a1:ae:8b
Signer

.text
Size: 58KB - Virtual size: 57KB

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

.rdata
Size: 27KB - Virtual size: 26KB

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

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

.bss
Size: - Virtual size: 13KB

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

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

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

.rsrc
Size: 3KB - Virtual size: 3KB

.reloc
Size: 512B - Virtual size: 300B