crealstealer | sysEXEC[.]zip

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General

Target

sysEXEC.zip
Size

18.8MB
MD5

337a3ecd26b0e8df897027abb0b9e5f0
SHA1

d046f684cd33be96d5b68ec0720f56e67f804133
SHA256

7a1eea1311b50e7bc80a2aeb77c772a26d275e9cede456dac7b27fadc81e3607
SHA512

3e3a25662012cc71969cef1841d134d6793ed9ea8a22b7a51ce230ec0662bc6304533eafb489240dd0e1b7ae4ae9d96f709b22e04325e5a2df05af7751f7584a
SSDEEP

393216:7oZJFDY1RYWSvjEXhxeNM9Ux02oiQXWns/DCOcz:7oZJq1RYWSbEXhxeNMOxNobXtbCOcz

Score

10^/10

pyinstaller crealstealer

Malware Config

Signatures

An infostealer written in Python and packaged with PyInstaller. 1 IoCs

resource	yara_rule
static1/unpack002/sysEXEC.pyc	crealstealer

Crealstealer family
crealstealer

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
static1/unpack001/sysEXEC/sysEXEC.exe	pyinstaller

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/sysEXEC/sysEXEC.exe

Files

sysEXEC.zip
.zip
sysEXEC/bootstrapper/b0x.dll
.jpg
sysEXEC/bootstrapper/curl.dll
.png
sysEXEC/deter.dll
sysEXEC/quickDrop.dll
sysEXEC/sysEXEC.exe
.exe windows:5 windows x64 arch:x64

2ac23c52e7647c5bbea38e98bb68c652

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

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

Sections

.text
Size: 164KB - Virtual size: 163KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 73KB - Virtual size: 73KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 110KB - Virtual size: 110KB

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
sysEXEC.pyc

Sharing

General

Malware Config

Signatures

Files

2ac23c52e7647c5bbea38e98bb68c652

Headers

DLL Characteristics

File Characteristics

Imports

user32

comctl32

kernel32

advapi32

gdi32

Sections

.text Size: 164KB - Virtual size: 163KB

.rdata Size: 73KB - Virtual size: 73KB

.data Size: 3KB - Virtual size: 28KB

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

.rsrc Size: 110KB - Virtual size: 110KB

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

.text
Size: 164KB - Virtual size: 163KB

.rdata
Size: 73KB - Virtual size: 73KB

.data
Size: 3KB - Virtual size: 28KB

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

.rsrc
Size: 110KB - Virtual size: 110KB

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