Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/dec8f9042986d64e29d62effb482290b_B.txt
Vulnerability: Port Bounce Scan (MITM)
Description: The ProSpy Server V1.9 malware runs an FTP component that listens on TCP port 2121. Third-party attackers who successfully logon can abuse the backdoor FTP 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.
Vuln ID: MVID-2021-0361
Dropped files: dxdiag.exe
nmap -n -Pn -b special:firstname.lastname@example.org:2121 -p21,22,80 192.168.18.237
Starting Nmap 7.80 ( https://nmap.org ) at 2021-10-04 13:22 Pacific Daylight Time
Nmap scan report for 192.168.18.237
Host is up.
PORT STATE SERVICE
21/tcp closed ftp
22/tcp closed ssh
80/tcp open http
Nmap done: 1 IP address (1 host up) scanned in 11.25 seconds
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