atexec[.]exe | Triage

Sharing

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General

Target

atexec.exe
Size

5.8MB
MD5

233d80fbd1fc0ad6562df06f55f01d0f
SHA1

023a8621332ea34b2685abb4500e2d9b8fc1f0fb
SHA256

3f524964ebb3e675a7e877db2f432a5e58b8510bce9c2e7f0c383f6e08a6e91f
SHA512

6f8d1a6d0cabfb85e5cefdfcdd83e9a8542fc21f51f1ab1316edbce649bc2868e6e604bb3be174f2577c66b4b15594185f68bd5b333fe55ff8bc97463fb4c6a7
SSDEEP

98304:gP9caRyyVyGHAeBSut+aFNnAlPLeqNZ8hY/1KbxabdDkEduupRyQgWse/IfbkeRU:C99lX+aFFAlPKQ8hY/DktWs+4ge+

Score

3^/10

pyinstaller

Malware Config

Signatures

Detects Pyinstaller 1 IoCs

pyinstaller

resource	yara_rule
sample	pyinstaller

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
atexec.exe

Files

atexec.exe
.exe windows:5 windows x86 arch:x86

fc40519af20116c903e3ff836e366e39

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

GetLastError
SetDllDirectoryW
GetModuleFileNameW
GetProcAddress
GetCommandLineW
GetEnvironmentVariableW
SetEnvironmentVariableW
ExpandEnvironmentStringsW
GetTempPathW
WaitForSingleObject
Sleep
GetExitCodeProcess
CreateProcessW
GetStartupInfoW
LoadLibraryExW
GetShortPathNameW
FormatMessageA
LoadLibraryA
MultiByteToWideChar
WideCharToMultiByte
DecodePointer
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetModuleHandleW
RtlUnwind
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetCommandLineA
ReadFile
CreateFileW
GetDriveTypeW
GetFileType
CloseHandle
PeekNamedPipe
SystemTimeToTzSpecificLocalTime
FileTimeToSystemTime
GetFullPathNameW
GetFullPathNameA
CreateDirectoryW
RemoveDirectoryW
FindClose
FindFirstFileExW
FindNextFileW
SetStdHandle
SetConsoleCtrlHandler
DeleteFileW
GetStdHandle
WriteFile
ExitProcess
GetModuleHandleExW
GetACP
HeapFree
HeapAlloc
GetConsoleMode
ReadConsoleW
SetFilePointerEx
GetConsoleCP
CompareStringW
LCMapStringW
GetCurrentDirectoryW
FlushFileBuffers
SetEnvironmentVariableA
GetFileAttributesExW
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetStringTypeW
GetProcessHeap
WriteConsoleW
GetTimeZoneInformation
HeapSize
HeapReAlloc
SetEndOfFile
RaiseException

ws2_32

ntohl

Sections

.text
Size: 124KB - Virtual size: 124KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 44KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 57KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.gfids
Size: 512B - Virtual size: 184B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 363KB - Virtual size: 363KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
atexec.pyc

Sharing

General

Malware Config

Signatures

Files

fc40519af20116c903e3ff836e366e39

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

ws2_32

Sections

.text Size: 124KB - Virtual size: 124KB

.rdata Size: 44KB - Virtual size: 44KB

.data Size: 2KB - Virtual size: 57KB

.gfids Size: 512B - Virtual size: 184B

.rsrc Size: 363KB - Virtual size: 363KB

.reloc Size: 6KB - Virtual size: 5KB

.text
Size: 124KB - Virtual size: 124KB

.rdata
Size: 44KB - Virtual size: 44KB

.data
Size: 2KB - Virtual size: 57KB

.gfids
Size: 512B - Virtual size: 184B

.rsrc
Size: 363KB - Virtual size: 363KB

.reloc
Size: 6KB - Virtual size: 5KB