Technical Information
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion:
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -ExecutionPolicy Bypass -Command "Write-Output 'BEFORE:'; ((Get-MpPreference).ExclusionPath) -join \"`n\"; Add-MpPreference -ExclusionPath '%HOMEPATH%\Downloads' -ErrorAction Silentl...
Modifies file system
Creates the following files
- %TEMP%\_mei27802\crypto\cipher\_arc4.pyd
- %TEMP%\_mei27802\crypto\cipher\_salsa20.pyd
- %TEMP%\_mei27802\crypto\cipher\_chacha20.pyd
- %TEMP%\_mei27802\crypto\cipher\_pkcs1_decode.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_aes.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_aesni.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_arc2.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_blowfish.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_cast.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_cbc.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_cfb.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_ctr.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_des.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_des3.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_ecb.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_eksblowfish.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_ocb.pyd
- %TEMP%\_mei27802\crypto\cipher\_raw_ofb.pyd
- %TEMP%\_mei27802\crypto\hash\_blake2b.pyd
- %TEMP%\_mei27802\crypto\hash\_blake2s.pyd
- %TEMP%\_mei27802\crypto\hash\_md2.pyd
- %TEMP%\_mei27802\crypto\hash\_md4.pyd
- %TEMP%\_mei27802\crypto\hash\_md5.pyd
- %TEMP%\_mei27802\crypto\hash\_ripemd160.pyd
- %TEMP%\_mei27802\crypto\hash\_sha1.pyd
- %TEMP%\_mei27802\crypto\hash\_sha224.pyd
- %TEMP%\_mei27802\crypto\hash\_sha256.pyd
- %TEMP%\_mei27802\crypto\hash\_sha384.pyd
- %TEMP%\_mei27802\crypto\hash\_sha512.pyd
- %TEMP%\_mei27802\crypto\hash\_ghash_clmul.pyd
- %TEMP%\_mei27802\crypto\hash\_ghash_portable.pyd
- %TEMP%\_mei27802\crypto\hash\_keccak.pyd
- %TEMP%\_mei27802\crypto\hash\_poly1305.pyd
- %TEMP%\_mei27802\crypto\math\_modexp.pyd
- %TEMP%\_mei27802\crypto\protocol\_scrypt.pyd
- %TEMP%\_mei27802\crypto\publickey\_curve25519.pyd
- %TEMP%\_mei27802\crypto\publickey\_curve448.pyd
- %TEMP%\_mei27802\crypto\publickey\_ec_ws.pyd
- %TEMP%\_mei27802\crypto\publickey\_ed25519.pyd
- %TEMP%\_mei27802\crypto\publickey\_ed448.pyd
- %TEMP%\_mei27802\crypto\util\_cpuid_c.pyd
- %TEMP%\_mei27802\crypto\util\_strxor.pyd
- %TEMP%\_mei27802\pil\_avif.cp313-win_amd64.pyd
- %TEMP%\_mei27802\pil\_imaging.cp313-win_amd64.pyd
- %TEMP%\_mei27802\pil\_imagingcms.cp313-win_amd64.pyd
- %TEMP%\_mei27802\pil\_imagingmath.cp313-win_amd64.pyd
- %TEMP%\_mei27802\pil\_imagingtk.cp313-win_amd64.pyd
- %TEMP%\_mei27802\pil\_webp.cp313-win_amd64.pyd
- %TEMP%\_mei27802\vcruntime140.dll
- %TEMP%\_mei27802\vcruntime140_1.dll
- %TEMP%\_mei27802\_asyncio.pyd
- %TEMP%\_mei27802\_bz2.pyd
- %TEMP%\_mei27802\_cffi_backend.cp313-win_amd64.pyd
- %TEMP%\_mei27802\_ctypes.pyd
- %TEMP%\_mei27802\_decimal.pyd
- %TEMP%\_mei27802\_elementtree.pyd
- %TEMP%\_mei27802\_hashlib.pyd
- %TEMP%\_mei27802\_lzma.pyd
- %TEMP%\_mei27802\_multiprocessing.pyd
- %TEMP%\_mei27802\_overlapped.pyd
- %TEMP%\_mei27802\_queue.pyd
- %TEMP%\_mei27802\_socket.pyd
- %TEMP%\_mei27802\_sqlite3.pyd
- %TEMP%\_mei27802\_ssl.pyd
- %TEMP%\_mei27802\_wmi.pyd
- %TEMP%\_mei27802\ada92cb5d92a588d1b93__mypyc.cp313-win_amd64.pyd
- %TEMP%\_mei27802\base_library.zip
- %TEMP%\_mei27802\certifi\cacert.pem
- %TEMP%\_mei27802\charset_normalizer\cd.cp313-win_amd64.pyd
- %TEMP%\_mei27802\charset_normalizer\md.cp313-win_amd64.pyd
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\installer
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\metadata
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\record
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\wheel
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\licenses\license
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\licenses\license.apache
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\licenses\license.bsd
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\sboms\cryptography-rust.cyclonedx.json
- %TEMP%\_mei27802\cryptography-49.0.0.dist-info\sboms\sbom.json
- %TEMP%\_mei27802\cryptography\hazmat\bindings\_rust.pyd
- %TEMP%\_mei27802\cv2\__init__.py
- %TEMP%\_mei27802\cv2\config-3.py
- %TEMP%\_mei27802\cv2\config.py
- %TEMP%\_mei27802\cv2\cv2.pyd
- %TEMP%\_mei27802\cv2\data\__init__.py
- %TEMP%\_mei27802\cv2\load_config_py3.py
- %TEMP%\_mei27802\cv2\mat_wrapper\__init__.py
- %TEMP%\_mei27802\cv2\misc\__init__.py
- %TEMP%\_mei27802\cv2\misc\version.py
- %TEMP%\_mei27802\cv2\opencv_videoio_ffmpeg500_64.dll
- %TEMP%\_mei27802\cv2\typing\__init__.py
- %TEMP%\_mei27802\cv2\utils\__init__.py
- %TEMP%\_mei27802\cv2\version.py
- %TEMP%\_mei27802\libcrypto-3.dll
- %TEMP%\_mei27802\libffi-8.dll
- %TEMP%\_mei27802\libssl-3.dll
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\delvewheel
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\installer
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\metadata
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\record
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\wheel
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\entry_points.txt
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\license.txt
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\include\numpy\libdivide\license.txt
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\src\common\pythoncapi-compat\copying
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\src\highway\license
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\src\multiarray\dragon4_license.txt
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\src\npysort\x86-simd-sort\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\_core\src\umath\svml\license
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\fft\pocketfft\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\linalg\lapack_lite\license.txt
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\ma\license
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\distributions\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\mt19937\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\pcg64\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\philox\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\sfc64\license.md
- %TEMP%\_mei27802\numpy-2.5.1.dist-info\licenses\numpy\random\src\splitmix64\license.md
- %TEMP%\_mei27802\numpy.libs\libscipy_openblas64_-b788215d9d47792bcba3a2e2a7114320.dll
- %TEMP%\_mei27802\numpy.libs\msvcp140-a4c2229bdc2a2a630acdc095b4d86008.dll
- %TEMP%\_mei27802\numpy\_core\_multiarray_tests.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\_core\_multiarray_umath.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\fft\_pocketfft_umath.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\linalg\_umath_linalg.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_bounded_integers.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_common.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_generator.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_mt19937.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_pcg64.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_philox.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\_sfc64.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\bit_generator.cp313-win_amd64.pyd
- %TEMP%\_mei27802\numpy\random\mtrand.cp313-win_amd64.pyd
- %TEMP%\_mei27802\psutil\_psutil_windows.pyd
- %TEMP%\_mei27802\pyexpat.pyd
- %TEMP%\_mei27802\python3.dll
- %TEMP%\_mei27802\python313.dll
- %TEMP%\_mei27802\pywin32_system32\pywintypes313.dll
- %TEMP%\_mei27802\select.pyd
- %TEMP%\_mei27802\setuptools\_vendor\jaraco\text\lorem ipsum.txt
- %TEMP%\_mei27802\sqlite3.dll
- %TEMP%\_mei27802\unicodedata.pyd
- %TEMP%\_mei27802\win32\win32pdh.pyd
- %TEMP%\ow3a_94e
- %TEMP%\payload_debug.log
Deletes following files that it created itself
- %TEMP%\ow3a_94e
Miscellaneous
Restarts the analyzed sample
Executes the following
- '<SYSTEM32>\cmd.exe' /c "ver"
- '<SYSTEM32>\getmac.exe' /fo csv /nh
- '<SYSTEM32>\tasklist.exe' /FO CSV /NH
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -ExecutionPolicy Bypass -Command " $svc=New-Object -ComObject Schedule.Service;$svc.Connect() $root=$svc.GetFolder('\') foreach($p in '\Microsoft\Windows\Media Center'.TrimStart('\')...
- '<SYSTEM32>\cmd.exe' /c "ver"' (with hidden window)