blankgrabber | Hackserver[.]exe

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General

Target

Hackserver.exe
Size

6.0MB
MD5

3ff2846552e4daf2ed1a57c942e6c4eb
SHA1

2d7ff422879cc66b04736d3444c1c538d2673a9f
SHA256

207d997deba4b3f52041bc9bfd2acccbc374a0ebac6347101b1d93eccb09adc0
SHA512

bdd44848bed91e9b40cd8b668900f43635558f219a6d1bb7231d06aeb44b5c26744c815a963ead944167a4a3f172dd7f94bd01e818bbaa1ad7bb9cb0f04cf284
SSDEEP

98304:4SSEtdFBodamaHl3Ne4i3gmtfXJOLhx9fZAzDJ4wzQgsRuGK4RtBRjVAbB9:4S5FO4eN/FJMIDJf0gsAGK4RtBRjVs9

Score

10^/10

blankgrabber

Malware Config

Signatures

A stealer written in Python and packaged with Pyinstaller 1 IoCs

resource	yara_rule
static1/unpack001/mw�,��*.pyc	blankgrabber

Blankgrabber family
blankgrabber

Files

Hackserver.exe
.exe windows:5 windows x64 arch:x64

023abd09c65289e3a2df4aa2b19cccec

Code Sign

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13
Certificate

Issuer

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

Not Before

03/02/2023, 00:05

Not After

01/02/2024, 00:05

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

ec:86:3a:ac:47:88:2b:4b:81:d4:e7:69:7d:ed:eb:ba:9e:6d:31:f5:f0:cb:46:d5:ef:85:18:24:e6:35:3c:ca
Signer

Actual PE Digest

ec:86:3a:ac:47:88:2b:4b:81:d4:e7:69:7d:ed:eb:ba:9e:6d:31:f5:f0:cb:46:d5:ef:85:18:24:e6:35:3c:ca

Digest Algorithm

sha256

PE Digest Matches

false

Headers

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

Imports

user32

GetWindowThreadProcessId
ShowWindow

kernel32

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

advapi32

ConvertSidToStringSidW
GetTokenInformation
OpenProcessToken
ConvertStringSecurityDescriptorToSecurityDescriptorW

Sections

.text
Size: 172KB - Virtual size: 172KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 75KB - Virtual size: 75KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
mw�,��*.pyc

Sharing

General

Malware Config

Signatures

Files

023abd09c65289e3a2df4aa2b19cccec

Code Sign

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13Certificate

Extended Key Usages

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

Key Usages

ec:86:3a:ac:47:88:2b:4b:81:d4:e7:69:7d:ed:eb:ba:9e:6d:31:f5:f0:cb:46:d5:ef:85:18:24:e6:35:3c:caSigner

Headers

DLL Characteristics

File Characteristics

Imports

user32

kernel32

advapi32

Sections

.text Size: 172KB - Virtual size: 172KB

.rdata Size: 75KB - Virtual size: 75KB

.data Size: 3KB - Virtual size: 12KB

.pdata Size: 9KB - Virtual size: 8KB

_RDATA Size: 512B - Virtual size: 500B

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

.reloc Size: 2KB - Virtual size: 1KB

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13
Certificate

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

ec:86:3a:ac:47:88:2b:4b:81:d4:e7:69:7d:ed:eb:ba:9e:6d:31:f5:f0:cb:46:d5:ef:85:18:24:e6:35:3c:ca
Signer

.text
Size: 172KB - Virtual size: 172KB

.rdata
Size: 75KB - Virtual size: 75KB

.data
Size: 3KB - Virtual size: 12KB

.pdata
Size: 9KB - Virtual size: 8KB

_RDATA
Size: 512B - Virtual size: 500B

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

.reloc
Size: 2KB - Virtual size: 1KB