full-disclosure - [FD] Backdoor.Win32.DarkMoon.a / Insecure Transit

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Message-ID: <CAAHK0WTxrDN0ViCz_nykHwkZWOL5V0fRgPcCsgqHEzisWUpFpg@mail.gmail.com>
Date: Mon, 17 May 2021 21:53:04 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.DarkMoon.a / Insecure Transit

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/7361fe3620fb6e18467c8e15e224b0b8_B.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.DarkMoon.a
Vulnerability: Insecure Transit
Description: Dark Moon v1 client by Shukisnike, sends cleartext passwords
over the network. The malwares traffic uses a caret '^' symbol surrounding
the password, making it easy to identify when analyzing the network traffic.
Type: PE
MD5: 7361fe3620fb6e18467c8e15e224b0b8
Vuln ID: MVID-2021-0216
Disclosure: 05/17/2021

Exploit/PoC:
Wireshark capture sending the password "abc123" from DarkMoon client.

0000   00 XX XX XX XX 00 XX XX XX XX 08 00 45 00  ..)..z..).yq..E.
0010   00 34 6d 10 40 00 80 06 00 00 c0 a8 12 7f c0 a8  .4m.@...........
0020   12 80 c3 69 5b 25 36 13 3b 6b ed 68 1c 6a 50 18  ...i[%6.;k.h.jP.
0030   01 00 a6 76 00 00 5e 35 5e 5e 5e 61 62 63 31 32  ...v..^5^^^abc12
0040   33 5e                                            3^

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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