blankgrabber | Built[.]exe

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General

Target
Built.exe
Size 10.8MB
Sample260601-rab8baex6v
SHA256 709f6149b081688dab961187cd58b4fc1a83cf49934e563c249c49a4e65ba863
MD5 e256cb9a01a815ab59e616c8beb71338
SHA1 9818013d411cf207a1ce7b54703139b6849f46e0
SHA512 1e4d50169f993f3997f44266c2610d9c429d04f3e14cb70f0d7c7643cd63580e3649d384337af63d85d008f7ac50ba852a9f4dc0598de0660d6029d07e2c971e
SSDEEP 196608:+oBXqR+/HwfI9jUCZB7m+mKOY7rXwZui2otPTCLymhzTG9YedlBBtpD8ctnTEwjB:+odqRuMIHD7HmBYXwtjtPTCL9vebBB4Y
TLSH
T1DAB63353EA9000F3F9E7587DC587892A8B727D219F20DADB427847586DB35F1483A33A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

stealer blankgrabber

Malware Config

Signatures

Family: blankgrabber
Blankgrabber is an infostealer written in Python and packaged with Pyinstaller.
stealer blankgrabber

A stealer written in Python and packaged with Pyinstaller 2 IoCs

resource	yara_rule
sample	blankgrabber_exe
static1/unpack001/O��S�.pyc	blankgrabber_exe

Codesign digest Mismatch 1 IoCs

File was altered after it was signed.

resource
Built.exe

File Explorer

Built.exe

.exe 10.8MB
O��S�.pyc

1KB

Built.exe

IMPHASH dcaf48c1f10b0efa0a4472200f3850ed
SHA256 709f6149b081688dab961187cd58b4fc1a83cf49934e563c249c49a4e65ba863
MD5 e256cb9a01a815ab59e616c8beb71338
SHA1 9818013d411cf207a1ce7b54703139b6849f46e0
SHA512 1e4d50169f993f3997f44266c2610d9c429d04f3e14cb70f0d7c7643cd63580e3649d384337af63d85d008f7ac50ba852a9f4dc0598de0660d6029d07e2c971e
SSDEEP 196608:+oBXqR+/HwfI9jUCZB7m+mKOY7rXwZui2otPTCLymhzTG9YedlBBtpD8ctnTEwjB:+odqRuMIHD7HmBYXwtjtPTCL9vebBB4Y
TLSH
T1DAB63353EA9000F3F9E7587DC587892A8B727D219F20DADB427847586DB35F1483A33A
MD5 SHA1 SHA512 SSDEEP TLSH

windows:6 windows x64 arch:x64

A stealer written in Python and packaged with Pyinstaller
Codesign digest Mismatch

File was altered after it was signed.

PE Signature issue

Digest

6e:e8:03:2e:37:7e:e0:be:6c:bf:f9:fc:90:26:ca:bc:ac:36:36:ae:d2:b4:f9:5e:a6:56:20:57:63:c9:c1:7b

Digest Algorithm

sha256

PE Digests Matches

Not matched

Trusted

Signing Certificate

SERIALNUMBER=407950,CN=Akeo Consulting,O=Akeo Consulting,ST=Donegal,C=IE,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024945

Chains

Apr 25, 2023

SERIALNUMBER=407950,CN=Akeo Consulting,O=Akeo Consulting,ST=Donegal,C=IE,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024945

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB

Subject

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Serial Number

48:fc:93:b4:60:55:94:8d:36:a7:c9:8a:89:d6:94:16

Issuer

CN=AAA Certificate Services,O=Comodo CA Limited,L=Salford,ST=Greater Manchester,C=GB

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

May 25, 2021 - Dec 31, 2028

Subject

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Serial Number

33:d7:08:a8:91:40:53:19:e2:a5:bb:d3:39:b9:ad:6e

Issuer

CN=Sectigo Public Code Signing Root R46,O=Sectigo Limited,C=GB

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Mar 22, 2021 - Mar 21, 2036

Subject

SERIALNUMBER=407950,CN=Akeo Consulting,O=Akeo Consulting,ST=Donegal,C=IE,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024945

Serial Number

bf:b1:50:01:bb:f5:92:d4:96:2a:77:97:ea:73:6f:a3

Issuer

CN=Sectigo Public Code Signing CA EV R36,O=Sectigo Limited,C=GB

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Sep 29, 2021 - Sep 28, 2024

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Serial Number

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12

Issuer

Key Usages

KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Jan 12, 2016 - Jan 11, 2031

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Serial Number

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Dec 23, 2017 - Mar 22, 2029

Minor OS version

Major OS version

Entry point

57248

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

user32

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

comctl32

ord380

kernel32

GetACP IsValidCodePage GetStringTypeW GetFileAttributesExW SetEnvironmentVariableW FlushFileBuffers LCMapStringW CompareStringW VirtualProtect InitializeCriticalSectionEx GetOEMCP GetCPInfo GetLastError FreeLibrary GetProcAddress LoadLibraryExW GetModuleHandleW MulDiv FormatMessageW GetModuleFileNameW SetDllDirectoryW GetEnvironmentStringsW SetErrorMode CreateDirectoryW GetCommandLineW GetEnvironmentVariableW ExpandEnvironmentStringsW DeleteFileW FindClose FindFirstFileW FindNextFileW GetDriveTypeW RemoveDirectoryW GetTempPathW CloseHandle QueryPerformanceCounter QueryPerformanceFrequency WaitForSingleObject Sleep GetCurrentProcess TerminateProcess GetExitCodeProcess CreateProcessW GetStartupInfoW LocalFree SetConsoleCtrlHandler K32EnumProcessModules K32GetModuleFileNameExW CreateFileW FindFirstFileExW GetFinalPathNameByHandleW MultiByteToWideChar WideCharToMultiByte FlsFree FreeEnvironmentStringsW GetProcessHeap GetTimeZoneInformation HeapSize HeapReAlloc WriteConsoleW SetEndOfFile CreateSymbolicLinkW RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter IsProcessorFeaturePresent GetCurrentProcessId GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead IsDebuggerPresent RtlUnwindEx SetLastError EnterCriticalSection LeaveCriticalSection DeleteCriticalSection InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree EncodePointer RaiseException RtlPcToFileHeader GetCommandLineA GetFileInformationByHandle GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime ReadFile GetFullPathNameW SetStdHandle GetStdHandle WriteFile ExitProcess GetModuleHandleExW HeapFree GetConsoleMode ReadConsoleW SetFilePointerEx GetConsoleOutputCP GetFileSizeEx HeapAlloc GetCurrentDirectoryW FlsAlloc FlsGetValue FlsSetValue

advapi32

OpenProcessToken GetTokenInformation ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertSidToStringSidW

gdi32

SelectObject DeleteObject CreateFontIndirectW

Name

.text

Size

177KB

Virtual Size

177KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

79KB

Virtual Size

78KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

20KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

9KB

Virtual Size

9KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

Built.exe

PE Signature issue

user32

comctl32

kernel32

advapi32

gdi32

generic

O����S�.pyc

O��S�.pyc