Behavioral task
behavioral1
Sample
keyauth-bypass.dll
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
keyauth-bypass.dll
Resource
win10v2004-20240802-en
General
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Target
keyauth-bypass.dll
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Size
7.7MB
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MD5
097e6459c5b66998c3bcfef3c1893856
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SHA1
c5cb16d016f563de5b23752fa8ab5500edbcec2b
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SHA256
1195c31aadf88e68509a597c09acc50116471809eb40e28d685c4c95658e860a
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SHA512
de207e027556d92685707ea30aa1d559c2b27eb6c4376e7fad50f130a75273ed9aa6629830f506f698f91ca055b1f511e807660a8cad7bd5b360c649c32fdfed
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SSDEEP
196608:q5gVVEDSwfI9jUC2gYBYv3vbW2+iITx1U6n:3VVEDxIH2gYBgDWJTnz
Malware Config
Signatures
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A stealer written in Python and packaged with Pyinstaller 1 IoCs
resource yara_rule static1/unpack001/GM�l�.pyc blankgrabber -
Blankgrabber family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource keyauth-bypass.dll
Files
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keyauth-bypass.dll.dll windows:6 windows x64 arch:x64
178a472b9d243fa0ad6d0ed185f7202c
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL
Imports
kernel32
GetModuleHandleA
CreateToolhelp32Snapshot
AttachConsole
GetCurrentProcess
CreateThread
GetCurrentProcessId
SetEndOfFile
WriteConsoleW
SetConsoleTitleA
CloseHandle
HeapCreate
VirtualProtect
HeapFree
Thread32Next
Thread32First
GetCurrentThreadId
SuspendThread
ResumeThread
Sleep
GetLastError
HeapReAlloc
HeapAlloc
GetThreadContext
GetProcAddress
GetModuleHandleW
FlushInstructionCache
SetThreadContext
OpenThread
VirtualFree
VirtualAlloc
GetSystemInfo
VirtualQuery
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
EncodePointer
DecodePointer
MultiByteToWideChar
WideCharToMultiByte
LCMapStringEx
GetStringTypeW
GetCPInfo
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
RtlUnwindEx
RtlPcToFileHeader
RaiseException
InterlockedFlushSList
SetLastError
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetModuleFileNameW
GetFileSizeEx
SetFilePointerEx
GetStdHandle
GetFileType
FlsAlloc
FlsGetValue
FlsSetValue
FlsFree
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
FlushFileBuffers
WriteFile
GetConsoleOutputCP
GetConsoleMode
WaitForSingleObject
GetExitCodeProcess
CreateProcessW
GetFileAttributesExW
ReadFile
ReadConsoleW
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
GetProcessHeap
SetStdHandle
CreateFileW
HeapSize
RtlUnwind
user32
MessageBoxA
advapi32
GetTokenInformation
OpenProcessToken
Sections
.text Size: 177KB - Virtual size: 176KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 66KB - Virtual size: 65KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 7.5MB - Virtual size: 7.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 9KB - Virtual size: 9KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.fptable Size: 512B - Virtual size: 256B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 512B - Virtual size: 248B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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GM�l�.pyc