blankgrabber | Astri[.]exe

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General

Target
Astri.exe
Size 6.9MB
Sample260626-3d17dsft3z
SHA256 bd030ea05b0e2a1709e7dba4dfb5aae1b38ed5d3096f4e82cc7b90d37c72f229
MD5 f661f25ebe308c08f4a13c4c66f01f4d
SHA1 aa717538c9fa2f934d43273ed724c723a4ba5c5a
SHA512 faa37cd0ebab87f2573af02293edef92d237b3b82840e258100f6c2f7593191f98d2efbd1f6f2cb645424f50a6abd5f567703b65fbe36b47ca6d98104d5d3acd
SSDEEP 98304:NGDjWM8JEEFeJbamaHl3Ne4i3Tf2PkOpfW9hZMMoVmkzhxIdfXeRa6mJcp/lq68K:NG0OJeeNTfm/pf+xk4dWRaU/aQo8Mbc
TLSH
T10976332AA7E00DF6EEA7697AC9809458D5B1FC190720CE8B035946FE0F276414D3FF68
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/��.pyc	blankgrabber_exe

Codesign digest Mismatch 1 IoCs

File was altered after it was signed.

resource
Astri.exe

File Explorer

Astri.exe

.exe 6.9MB
��.pyc

1KB

Astri.exe

IMPHASH 2ac23c52e7647c5bbea38e98bb68c652
SHA256 bd030ea05b0e2a1709e7dba4dfb5aae1b38ed5d3096f4e82cc7b90d37c72f229
MD5 f661f25ebe308c08f4a13c4c66f01f4d
SHA1 aa717538c9fa2f934d43273ed724c723a4ba5c5a
SHA512 faa37cd0ebab87f2573af02293edef92d237b3b82840e258100f6c2f7593191f98d2efbd1f6f2cb645424f50a6abd5f567703b65fbe36b47ca6d98104d5d3acd
SSDEEP 98304:NGDjWM8JEEFeJbamaHl3Ne4i3Tf2PkOpfW9hZMMoVmkzhxIdfXeRa6mJcp/lq68K:NG0OJeeNTfm/pf+xk4dWRaU/aQo8Mbc
TLSH
T10976332AA7E00DF6EEA7697AC9809458D5B1FC190720CE8B035946FE0F276414D3FF68
MD5 SHA1 SHA512 SSDEEP TLSH

windows:5 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

78:11:de:a4:84:27:24:75:03:8b:fe:89:00:5c:1c:6c:24:83:32:44:ed:12:f9:3e:d6:52:48:50:b3:44:d0:3e

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

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

48672

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 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 GetCurrentDirectoryW GetOEMCP GetCPInfo GetModuleHandleW MulDiv GetLastError FormatMessageW GetModuleFileNameW SetDllDirectoryW CreateSymbolicLinkW GetProcAddress CreateDirectoryW GetCommandLineW GetEnvironmentVariableW GetEnvironmentStringsW DeleteFileW FindClose FindFirstFileW FindNextFileW GetDriveTypeW RemoveDirectoryW GetTempPathW CloseHandle WaitForSingleObject Sleep GetCurrentProcess GetExitCodeProcess CreateProcessW GetStartupInfoW FreeLibrary LoadLibraryExW LocalFree SetConsoleCtrlHandler CreateFileW FindFirstFileExW GetFinalPathNameByHandleW MultiByteToWideChar WideCharToMultiByte FreeEnvironmentStringsW GetProcessHeap GetTimeZoneInformation HeapSize HeapReAlloc WriteConsoleW SetEndOfFile ExpandEnvironmentStringsW QueryPerformanceCounter RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter TerminateProcess 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 FlsAlloc FlsGetValue FlsSetValue FlsFree CompareStringW LCMapStringW

advapi32

OpenProcessToken GetTokenInformation ConvertStringSecurityDescriptorToSecurityDescriptorW ConvertSidToStringSidW

gdi32

SelectObject DeleteObject CreateFontIndirectW

Sharing

General

Malware Config

Signatures

File Explorer

Astri.exe

PE Signature issue

user32

comctl32

kernel32

advapi32

gdi32

generic

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��.pyc