Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'payload' = '%APPDATA%\payload.exe'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\payload.exe
- <SYSTEM32>\tasks\payload
Modifies file system
Creates the following files
- %TEMP%\_mei29802\crypto\cipher\_arc4.pyd
- %TEMP%\_mei29802\crypto\cipher\_salsa20.pyd
- %TEMP%\_mei29802\crypto\cipher\_chacha20.pyd
- %TEMP%\_mei29802\crypto\cipher\_pkcs1_decode.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_aes.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_aesni.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_arc2.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_blowfish.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_cast.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_cbc.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_cfb.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_ctr.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_des.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_des3.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_ecb.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_eksblowfish.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_ocb.pyd
- %TEMP%\_mei29802\crypto\cipher\_raw_ofb.pyd
- %TEMP%\_mei29802\crypto\hash\_blake2b.pyd
- %TEMP%\_mei29802\crypto\hash\_blake2s.pyd
- %TEMP%\_mei29802\crypto\hash\_md2.pyd
- %TEMP%\_mei29802\crypto\hash\_md4.pyd
- %TEMP%\_mei29802\crypto\hash\_md5.pyd
- %TEMP%\_mei29802\crypto\hash\_ripemd160.pyd
- %TEMP%\_mei29802\crypto\hash\_sha1.pyd
- %TEMP%\_mei29802\crypto\hash\_sha224.pyd
- %TEMP%\_mei29802\crypto\hash\_sha256.pyd
- %TEMP%\_mei29802\crypto\hash\_sha384.pyd
- %TEMP%\_mei29802\crypto\hash\_sha512.pyd
- %TEMP%\_mei29802\crypto\hash\_ghash_clmul.pyd
- %TEMP%\_mei29802\crypto\hash\_ghash_portable.pyd
- %TEMP%\_mei29802\crypto\hash\_keccak.pyd
- %TEMP%\_mei29802\crypto\hash\_poly1305.pyd
- %TEMP%\_mei29802\crypto\math\_modexp.pyd
- %TEMP%\_mei29802\crypto\protocol\_scrypt.pyd
- %TEMP%\_mei29802\crypto\publickey\_curve25519.pyd
- %TEMP%\_mei29802\crypto\publickey\_curve448.pyd
- %TEMP%\_mei29802\crypto\publickey\_ec_ws.pyd
- %TEMP%\_mei29802\crypto\publickey\_ed25519.pyd
- %TEMP%\_mei29802\crypto\publickey\_ed448.pyd
- %TEMP%\_mei29802\crypto\util\_cpuid_c.pyd
- %TEMP%\_mei29802\crypto\util\_strxor.pyd
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\installer
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\license.txt
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\metadata
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\record
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\wheel
- %TEMP%\_mei29802\markupsafe-3.0.2.dist-info\top_level.txt
- %TEMP%\_mei29802\pythonwin\mfc140u.dll
- %TEMP%\_mei29802\pythonwin\win32ui.pyd
- %TEMP%\_mei29802\vcruntime140.dll
- %TEMP%\_mei29802\vcruntime140_1.dll
- %TEMP%\_mei29802\_asyncio.pyd
- %TEMP%\_mei29802\_bz2.pyd
- %TEMP%\_mei29802\_cffi_backend.cp310-win_amd64.pyd
- %TEMP%\_mei29802\_ctypes.pyd
- %TEMP%\_mei29802\_decimal.pyd
- %TEMP%\_mei29802\_hashlib.pyd
- %TEMP%\_mei29802\_lzma.pyd
- %TEMP%\_mei29802\_msi.pyd
- %TEMP%\_mei29802\_multiprocessing.pyd
- %TEMP%\_mei29802\_overlapped.pyd
- %TEMP%\_mei29802\_queue.pyd
- %TEMP%\_mei29802\_socket.pyd
- %TEMP%\_mei29802\_ssl.pyd
- %TEMP%\_mei29802\api-ms-win-core-console-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-datetime-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-debug-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-errorhandling-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-fibers-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-fibers-l1-1-1.dll
- %TEMP%\_mei29802\api-ms-win-core-file-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-file-l1-2-0.dll
- %TEMP%\_mei29802\api-ms-win-core-file-l2-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-handle-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-heap-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-interlocked-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-kernel32-legacy-l1-1-1.dll
- %TEMP%\_mei29802\api-ms-win-core-libraryloader-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-localization-l1-2-0.dll
- %TEMP%\_mei29802\api-ms-win-core-memory-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-namedpipe-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-processenvironment-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-processthreads-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-processthreads-l1-1-1.dll
- %TEMP%\_mei29802\api-ms-win-core-profile-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-rtlsupport-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-string-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-synch-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-synch-l1-2-0.dll
- %TEMP%\_mei29802\api-ms-win-core-sysinfo-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-sysinfo-l1-2-0.dll
- %TEMP%\_mei29802\api-ms-win-core-timezone-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-core-util-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-conio-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-convert-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-environment-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-filesystem-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-heap-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-locale-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-math-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-multibyte-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-process-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-runtime-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-stdio-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-string-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-time-l1-1-0.dll
- %TEMP%\_mei29802\api-ms-win-crt-utility-l1-1-0.dll
- %TEMP%\_mei29802\base_library.zip
- %TEMP%\_mei29802\encrypted.bin.exe
- %TEMP%\_mei29802\libcrypto-1_1.dll
- %TEMP%\_mei29802\libffi-7.dll
- %TEMP%\_mei29802\libssl-1_1.dll
- %TEMP%\_mei29802\markupsafe\_speedups.cp310-win_amd64.pyd
- %TEMP%\_mei29802\psutil\_psutil_windows.pyd
- %TEMP%\_mei29802\pyexpat.pyd
- %TEMP%\_mei29802\python3.dll
- %TEMP%\_mei29802\python310.dll
- %TEMP%\_mei29802\pywin32_system32\pythoncom310.dll
- %TEMP%\_mei29802\pywin32_system32\pywintypes310.dll
- %TEMP%\_mei29802\select.pyd
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\installer
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\license
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\metadata
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\record
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\wheel
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\entry_points.txt
- %TEMP%\_mei29802\setuptools-63.2.0.dist-info\top_level.txt
- %TEMP%\_mei29802\ucrtbase.dll
- %TEMP%\_mei29802\unicodedata.pyd
- %TEMP%\_mei29802\win32\_win32sysloader.pyd
- %TEMP%\_mei29802\win32\win32api.pyd
- %TEMP%\_mei29802\win32\win32event.pyd
- %TEMP%\_mei29802\win32\win32trace.pyd
- %TEMP%\_mei29802\win32com\shell\shell.pyd
- %TEMP%\kr_e6plm
- %TEMP%\payload.exe
- %APPDATA%\payload.exe
- %LOCALAPPDATA%\microsoft\clr_v4.0\usagelogs\payload.exe.log
Network activity
Connects to
- '17#.#50.188.144':22635
UDP
- DNS ASK appengine.google.com
Miscellaneous
Creates and executes the following
- '%TEMP%\payload.exe'
- '%APPDATA%\payload.exe'
Restarts the analyzed sample
Executes the following
- '<SYSTEM32>\cmd.exe' /c "ver"
- '<SYSTEM32>\schtasks.exe' /create /f /sc minute /mo 1 /tn "payload" /tr "%APPDATA%\payload.exe"
- '<SYSTEM32>\cmd.exe' /c "ver"' (with hidden window)
- '<SYSTEM32>\schtasks.exe' /create /f /sc minute /mo 1 /tn "payload" /tr "%APPDATA%\payload.exe"' (with hidden window)
