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Date: Wed, 20 Jan 2021 21:25:53 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Zxman / Missing Authentication

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/6b2a9304d1c7a63365db0f9fd12d39b0.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Zxman
Vulnerability: Missing Authentication
Description: Backdoor.Win32.Zxman by Zx-man listens on TCP port 2048
for commands. However, anyone who can reach the infected host can take
control as there is no authentication in place. Not much of a
self-respecting backdoor. Third party intruders or incident responders
who logon will be greeted with a welcome screen and help menu allowing
for a wide-range of commands.

Welcome to REMOTE_CONTROL_SYSTEM by Zx-man (zx-man@....net)

Commands List: etc..

Type: PE32
MD5: 6b2a9304d1c7a63365db0f9fd12d39b0
Vuln ID: MVID-2021-0041
Disclosure: 01/20/2021


Exploit/PoC:
TELNET x.x.x.x 2048


Disclaimer: The information contained within this advisory is supplied
"as-is" with no warranties or guarantees of fitness of use or
otherwise. 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 vulnerability databases and similar, provided that due
credit is given to 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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