Trojan.Siggen32.23211

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'CbDSNAdYXk' = 'wscript.exe %APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs'

Malicious functions

Executes the following

'<SYSTEM32>\taskkill.exe' /F /IM msedge.exe

Reads files which store third party applications passwords

%APPDATA%\mozilla\firefox\profiles.ini
%LOCALAPPDATA%\microsoft\edge\user data\default\login data
%LOCALAPPDATA%\microsoft\edge\user data\default\web data

Modifies file system

Creates the following files

%TEMP%\_mei9402\crypto\cipher\_arc4.pyd
%TEMP%\_mei9402\crypto\cipher\_salsa20.pyd
%TEMP%\_mei9402\crypto\cipher\_chacha20.pyd
%TEMP%\_mei9402\crypto\cipher\_pkcs1_decode.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_aes.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_aesni.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_arc2.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_blowfish.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cast.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cbc.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cfb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ctr.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_des.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_des3.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ecb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_eksblowfish.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ocb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ofb.pyd
%TEMP%\_mei9402\crypto\hash\_blake2b.pyd
%TEMP%\_mei9402\crypto\hash\_blake2s.pyd
%TEMP%\_mei9402\crypto\hash\_md2.pyd
%TEMP%\_mei9402\crypto\hash\_md4.pyd
%TEMP%\_mei9402\crypto\hash\_md5.pyd
%TEMP%\_mei9402\crypto\hash\_ripemd160.pyd
%TEMP%\_mei9402\crypto\hash\_sha1.pyd
%TEMP%\_mei9402\crypto\hash\_sha224.pyd
%TEMP%\_mei9402\crypto\hash\_sha256.pyd
%TEMP%\_mei9402\crypto\hash\_sha384.pyd
%TEMP%\_mei9402\crypto\hash\_sha512.pyd
%TEMP%\_mei9402\crypto\hash\_ghash_clmul.pyd
%TEMP%\_mei9402\crypto\hash\_ghash_portable.pyd
%TEMP%\_mei9402\crypto\hash\_keccak.pyd
%TEMP%\_mei9402\crypto\hash\_poly1305.pyd
%TEMP%\_mei9402\crypto\math\_modexp.pyd
%TEMP%\_mei9402\crypto\protocol\_scrypt.pyd
%TEMP%\_mei9402\crypto\publickey\_curve25519.pyd
%TEMP%\_mei9402\crypto\publickey\_curve448.pyd
%TEMP%\_mei9402\crypto\publickey\_ec_ws.pyd
%TEMP%\_mei9402\crypto\publickey\_ed25519.pyd
%TEMP%\_mei9402\crypto\publickey\_ed448.pyd
%TEMP%\_mei9402\crypto\util\_cpuid_c.pyd
%TEMP%\_mei9402\crypto\util\_strxor.pyd
%TEMP%\_mei9402\vcruntime140.dll
%TEMP%\_mei9402\vcruntime140_1.dll
%TEMP%\_mei9402\_asyncio.pyd
%TEMP%\_mei9402\_bz2.pyd
%TEMP%\_mei9402\_ctypes.pyd
%TEMP%\_mei9402\_decimal.pyd
%TEMP%\_mei9402\_hashlib.pyd
%TEMP%\_mei9402\_lzma.pyd
%TEMP%\_mei9402\_multiprocessing.pyd
%TEMP%\_mei9402\_overlapped.pyd
%TEMP%\_mei9402\_queue.pyd
%TEMP%\_mei9402\_socket.pyd
%TEMP%\_mei9402\_sqlite3.pyd
%TEMP%\_mei9402\_ssl.pyd
%TEMP%\_mei9402\api-ms-win-core-console-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-fibers-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l2-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\_mei9402\api-ms-win-core-profile-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-string-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-util-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-conio-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-runtime-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\_mei9402\base_library.zip
%TEMP%\_mei9402\certifi\cacert.pem
%TEMP%\_mei9402\charset_normalizer\md.cp311-win_amd64.pyd
%TEMP%\_mei9402\charset_normalizer\md__mypyc.cp311-win_amd64.pyd
%TEMP%\_mei9402\libcrypto-1_1.dll
%TEMP%\_mei9402\libffi-8.dll
%TEMP%\_mei9402\libssl-1_1.dll
%TEMP%\_mei9402\pyexpat.pyd
%TEMP%\_mei9402\python311.dll
%TEMP%\_mei9402\pywin32_system32\pywintypes311.dll
%TEMP%\_mei9402\select.pyd
%TEMP%\_mei9402\sqlite3.dll
%TEMP%\_mei9402\ucrtbase.dll
%TEMP%\_mei9402\unicodedata.pyd
%TEMP%\_mei9402\win32\win32crypt.pyd
%APPDATA%\mozilla\firefox\profiles\dnyauhh1.default-release\key4_temp.db
%LOCALAPPDATA%\microsoft\edge\user data\default\passwords.db
%LOCALAPPDATA%\microsoft\edge\user data\default\webdata.db
%LOCALAPPDATA%\microsoft\edge\user data\default\history.db
%LOCALAPPDATA%\microsoft\edge\user data\default\credit_cards.db
%LOCALAPPDATA%\bunny\autofills\autofills.txt
%LOCALAPPDATA%\bunny\history\msedge - default.txt
%LOCALAPPDATA%\bunny\wallets\wallet_processing_summary.json
nul
%LOCALAPPDATA%\microsoft\edge\user data\devtoolsactiveport
%LOCALAPPDATA%\microsoft\edge\user data\default\gpucache\index
%LOCALAPPDATA%\microsoft\edge\user data\default\gpucache\data_0
%LOCALAPPDATA%\microsoft\edge\user data\default\gpucache\data_2
%LOCALAPPDATA%\microsoft\edge\user data\default\gpucache\data_3
%LOCALAPPDATA%\microsoft\edge\user data\default\cookies-journal
%LOCALAPPDATA%\microsoft\edge\user data\default\cookies
%TEMP%\pyna9c9g
%TEMP%\tmpt6sja0pj.ps1
%LOCALAPPDATA%\bunny\screenshot.png
%LOCALAPPDATA%\[185.93.40.66][xx]16-50-55-07-02-26.zip
%APPDATA%\microsoft\windows\templates\cbdsnadyxk.vbs

Sets the 'hidden' attribute to the following files

%APPDATA%\microsoft\windows\templates\cbdsnadyxk.vbs

Deletes following files that it created itself

%TEMP%\pyna9c9g
%TEMP%\tmpt6sja0pj.ps1
%LOCALAPPDATA%\bunny\autofills\autofills.txt
%LOCALAPPDATA%\bunny\history\msedge - default.txt
%LOCALAPPDATA%\bunny\screenshot.png
%LOCALAPPDATA%\bunny\wallets\wallet_processing_summary.json
%LOCALAPPDATA%\[185.93.40.66][xx]16-50-55-07-02-26.zip
%TEMP%\_mei9402\api-ms-win-core-console-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-fibers-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-file-l2-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\_mei9402\api-ms-win-core-profile-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-string-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\_mei9402\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-core-util-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-conio-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-runtime-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\_mei9402\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\_mei9402\base_library.zip
%TEMP%\_mei9402\certifi\cacert.pem
%TEMP%\_mei9402\charset_normalizer\md.cp311-win_amd64.pyd
%TEMP%\_mei9402\charset_normalizer\md__mypyc.cp311-win_amd64.pyd
%TEMP%\_mei9402\crypto\cipher\_arc4.pyd
%TEMP%\_mei9402\crypto\cipher\_chacha20.pyd
%TEMP%\_mei9402\crypto\cipher\_pkcs1_decode.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_aes.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_aesni.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_arc2.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_blowfish.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cast.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cbc.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_cfb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ctr.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_des.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_des3.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ecb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_eksblowfish.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ocb.pyd
%TEMP%\_mei9402\crypto\cipher\_raw_ofb.pyd
%TEMP%\_mei9402\crypto\cipher\_salsa20.pyd
%TEMP%\_mei9402\crypto\hash\_blake2b.pyd
%TEMP%\_mei9402\crypto\hash\_blake2s.pyd
%TEMP%\_mei9402\crypto\hash\_ghash_clmul.pyd
%TEMP%\_mei9402\crypto\hash\_ghash_portable.pyd
%TEMP%\_mei9402\crypto\hash\_keccak.pyd
%TEMP%\_mei9402\crypto\hash\_md2.pyd
%TEMP%\_mei9402\crypto\hash\_md4.pyd
%TEMP%\_mei9402\crypto\hash\_md5.pyd
%TEMP%\_mei9402\crypto\hash\_poly1305.pyd
%TEMP%\_mei9402\crypto\hash\_ripemd160.pyd
%TEMP%\_mei9402\crypto\hash\_sha1.pyd
%TEMP%\_mei9402\crypto\hash\_sha224.pyd
%TEMP%\_mei9402\crypto\hash\_sha256.pyd
%TEMP%\_mei9402\crypto\hash\_sha384.pyd
%TEMP%\_mei9402\crypto\hash\_sha512.pyd
%TEMP%\_mei9402\crypto\math\_modexp.pyd
%TEMP%\_mei9402\crypto\protocol\_scrypt.pyd
%TEMP%\_mei9402\crypto\publickey\_curve25519.pyd
%TEMP%\_mei9402\crypto\publickey\_curve448.pyd
%TEMP%\_mei9402\crypto\publickey\_ec_ws.pyd
%TEMP%\_mei9402\crypto\publickey\_ed25519.pyd
%TEMP%\_mei9402\crypto\publickey\_ed448.pyd
%TEMP%\_mei9402\crypto\util\_cpuid_c.pyd
%TEMP%\_mei9402\crypto\util\_strxor.pyd
%TEMP%\_mei9402\libcrypto-1_1.dll
%TEMP%\_mei9402\libffi-8.dll
%TEMP%\_mei9402\libssl-1_1.dll
%TEMP%\_mei9402\pyexpat.pyd
%TEMP%\_mei9402\python311.dll
%TEMP%\_mei9402\pywin32_system32\pywintypes311.dll
%TEMP%\_mei9402\select.pyd
%TEMP%\_mei9402\sqlite3.dll
%TEMP%\_mei9402\ucrtbase.dll
%TEMP%\_mei9402\unicodedata.pyd
%TEMP%\_mei9402\vcruntime140.dll
%TEMP%\_mei9402\vcruntime140_1.dll
%TEMP%\_mei9402\win32\win32crypt.pyd
%TEMP%\_mei9402\_asyncio.pyd
%TEMP%\_mei9402\_bz2.pyd
%TEMP%\_mei9402\_ctypes.pyd
%TEMP%\_mei9402\_decimal.pyd
%TEMP%\_mei9402\_hashlib.pyd
%TEMP%\_mei9402\_lzma.pyd
%TEMP%\_mei9402\_multiprocessing.pyd
%TEMP%\_mei9402\_overlapped.pyd
%TEMP%\_mei9402\_queue.pyd
%TEMP%\_mei9402\_socket.pyd
%TEMP%\_mei9402\_sqlite3.pyd
%TEMP%\_mei9402\_ssl.pyd

Network activity

Connects to

'ap#.#pify.org':443
'localhost':9876
'ap#.##legram.org':443

TCP

HTTP GET requests

Other

'ap#.#pify.org':443
'localhost':49699
'localhost':49700
'ap#.##legram.org':443

UDP

DNS ASK ap#.#pify.org
DNS ASK ap#.##legram.org

Miscellaneous

Searches for the following windows

ClassName: '' WindowName: ''

Creates and executes the following

'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -ExecutionPolicy Bypass -File %TEMP%\tmpt6sja0pj.ps1
'<SYSTEM32>\wscript.exe' %APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs

Restarts the analyzed sample

Executes the following

'%ProgramFiles(x86)%\microsoft\edge\application\msedge.exe' --remote-debugging-port=9876 "--user-data-dir=%LOCALAPPDATA%\Microsoft\Edge\User Data" --profile-directory=Default --remote-allow-origins=* --headless=new --disable-gpu --no-sandbox
'<SYSTEM32>\cmd.exe' /c "attrib +h +s "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs""
'<SYSTEM32>\attrib.exe' +h +s "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs"
'<SYSTEM32>\cmd.exe' /c "reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "CbDSNAdYXk" /t REG_SZ /d "wscript.exe "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs"" /f"
'<SYSTEM32>\reg.exe' add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "CbDSNAdYXk" /t REG_SZ /d "wscript.exe "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs"" /f
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -EncodedCommand CgAKAEEAZABkAC0AVAB5AHAAZQAgAC0AQQBzAHMAZQBtAGIAbAB5AE4AYQBtAGUAIABTAHkAcwB0AGUAbQAuAFcAaQBuAGQAbwB3AHMALgBGAG8AcgBtAHMACg...
'<SYSTEM32>\cmd.exe' /c "attrib +h +s "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs""' (with hidden window)
'<SYSTEM32>\cmd.exe' /c "reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "CbDSNAdYXk" /t REG_SZ /d "wscript.exe "%APPDATA%\Microsoft\Windows\Templates\CbDSNAdYXk.vbs"" /f"' (with hidden window)
'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -NoProfile -WindowStyle Hidden -ExecutionPolicy Bypass -EncodedCommand CgAKAEEAZABkAC0AVAB5AHAAZQAgAC0AQQBzAHMAZQBtAGIAbAB5AE4AYQBtAGUAIABTAHkAcwB0AGUAbQAuAFcAaQBuAGQAbwB3AHMALgBGAG8AcgBtAHMACg...' (with hidden window)

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Begriffe

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